Contributions
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How can you help your R&D team stay connected and resilient remotely?
In my experience leading a global team during the pandemic, we turned to virtual gatherings to have informal discussions and getting to know each other. Whether it was sharing a meal over UberEats or a virtual happy hour, it led to meaningful interactions. After the pandemic, we continue to have Coffee Talks, where we join together over Teams with video to break into small groups to go through ice breakers/discussion topics, so that we can continue the spirit of these interactions.
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How do you commercialize your R&D ideas?
It's important to identify a lead customer or lead market opportunity, and work with a marketer to assess the opportunity and positioning. Having a technical data package is one thing, but having a clear story around the problem the R&D idea is solving and how it is different or better than existing solutions (cheaper, faster, less steps, not possible before, etc.) will provide a clear reason for customers to try it and see it as a solution they should consider.
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How can you keep learning and growing in product development?
To keep learning and growing in product development, it is important to anticipate where your customer's needs will be. Consider building a team around not only customer insights but three year market trends to think about what will stay the same, what will change and what will disappear. Which one of those trends will obsolete your existing products? Which trends have requirements or needs that are unmet by your current (or competitive offerings) that require an entirely new product offering? Likewise, it is important to tie these trends back to your technology development and capability roadmap - do you have the right toolset to make the products of the future? These two go hand-in-hand to ensure continued growth of a development hopper.
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How do you cope with stress and burnout as a technical leader and support your team's well-being?
In my experience, it has been helpful to walk the talk with my team by setting work life balance as a priority on my work calendar. By blocking off time for family dinner, school events, bowling and vacations, my team can see that I’m making it a priority to make time for that while encouraging them to also do the same.
Activity
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Check out our paper on skin-interfaced microfluidic devices for colorimetric evaluation of ketones in sweat, published this week in Lab on a…
Check out our paper on skin-interfaced microfluidic devices for colorimetric evaluation of ketones in sweat, published this week in Lab on a…
Liked by Chris Campbell
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It's great to see 3M once again named one of the World's Most Trustworthy Companies by Newsweek. I'm proud to be part of an organization that unlocks…
It's great to see 3M once again named one of the World's Most Trustworthy Companies by Newsweek. I'm proud to be part of an organization that unlocks…
Liked by Chris Campbell
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🎉 After 9 months, 758 applications, and a mountain of rejection emails, I’m beyond excited to say: The Green Banner is DOWN! 🎉 To everyone still…
🎉 After 9 months, 758 applications, and a mountain of rejection emails, I’m beyond excited to say: The Green Banner is DOWN! 🎉 To everyone still…
Liked by Chris Campbell
Licenses & Certifications
Publications
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Directing cell motions on micropatterned ratchets
Nature Physics
Cell motility is a process deriving from the synchronized dynamics of the cytoskeleton. In several important physiological processes—notably, cancer metastasis—the randomly moving cells can acquire a directional motility phenotype and bias their motions in response to environmental cues. Despite intense research, however, the current understanding of directional cell migration is incomplete and there is a growing need to develop systems that would enable the study and control of this process…
Cell motility is a process deriving from the synchronized dynamics of the cytoskeleton. In several important physiological processes—notably, cancer metastasis—the randomly moving cells can acquire a directional motility phenotype and bias their motions in response to environmental cues. Despite intense research, however, the current understanding of directional cell migration is incomplete and there is a growing need to develop systems that would enable the study and control of this process. This article demonstrates that random motions of motile cells can be rectified by asymmetric ('ratchet') microgeometries. Interactions between the cells and the imposed geometrical cues guide cell polarization and give rise to directional motility. Depending on the ratchet design, cells of different types can move either in the same or in opposite directions on the same imposed pattern. In the latter case, it is possible to partially sort mixed cell populations into different collecting reservoirs.
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Mechanism of Reactive Wetting and Direct Visual Determination of the Kinetics of Self-Assembled Monolayer Formation
Langmuir
Reactive wetting (RW) of alkane thiols and disulfides on gold is studied experimentally using the wet stamping technique. Theoretical description based on Langevin dynamics is developed to explain the experimental results and to clarify the physical processes underlying RW. In this description, thermal fluctuations of the three-phase contact line combine with the surface reaction to gradually build a low-energy self-assembled monolayer (SAM) onto which the front propagates. The results of the…
Reactive wetting (RW) of alkane thiols and disulfides on gold is studied experimentally using the wet stamping technique. Theoretical description based on Langevin dynamics is developed to explain the experimental results and to clarify the physical processes underlying RW. In this description, thermal fluctuations of the three-phase contact line combine with the surface reaction to gradually build a low-energy self-assembled monolayer (SAM) onto which the front propagates. The results of the model match the experiments and allow determination of the kinetic rate constants of SAM formation.
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Blocking of Disulfide Adsorption by Coadsorbing omega-Functionalized Alkane Thiols Revealed by Wet Stamping and Fluorescence Microscopy
Langmuir
When alkane thiols and disulfides coadsorb onto gold, they do not necessarily create a mixed monolayer. In particular, when thiols are terminated in groups capable of hydrogen bonding, they can altogether eliminate adsorption of disulfides. Such elimination can be observed directly by using fluorescently labeled disulfides and monitoring their adsorption (or lack of) by fluorescence microscopy. These experiments suggest a mechanism in which adsorption of thiols is facilitated by hydrogen…
When alkane thiols and disulfides coadsorb onto gold, they do not necessarily create a mixed monolayer. In particular, when thiols are terminated in groups capable of hydrogen bonding, they can altogether eliminate adsorption of disulfides. Such elimination can be observed directly by using fluorescently labeled disulfides and monitoring their adsorption (or lack of) by fluorescence microscopy. These experiments suggest a mechanism in which adsorption of thiols is facilitated by hydrogen bonding.
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Cell Motility on Micropatterned Treadmills and Tracks
Soft Matter
Surfaces micropatterned with disjointed cell adhesive/non-adhesive regions allow for precise control of cell shape, internal organization and function. In particular, substrates prepared by the reaction-diffusion ASoMic (Anisotropic Solid Microetching) method localize cells onto transparent micro-islands or tracks surrounded by an opaque, adhesion-resistant background. ASoMic is compatible with several important imaging modalities (e.g. wide-field, fluorescent, TIRF and confocal microscopies)…
Surfaces micropatterned with disjointed cell adhesive/non-adhesive regions allow for precise control of cell shape, internal organization and function. In particular, substrates prepared by the reaction-diffusion ASoMic (Anisotropic Solid Microetching) method localize cells onto transparent micro-islands or tracks surrounded by an opaque, adhesion-resistant background. ASoMic is compatible with several important imaging modalities (e.g. wide-field, fluorescent, TIRF and confocal microscopies), and can be used to study and quantify various intracellular and cellular processes related to cell motility. For cells constrained on the islands, the imposed geometry controls spatial organization of the cytoskeleton, while the transparency of the islands allows for real-time analysis of cytoskeletal dynamics. For cells on transparent, linear tracks, the high optical contrast between these adhesive regions and the surrounding non-adhesive background allows for straightforward quantification of the key parameters describing cell motility. Both types of systems provide analytical-quality data that can assist fundamental studies of cell locomotion and can provide a technological basis for cell motility microassays.
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Fabrication using ‘programmed’ reactions
Materials Today
Various types of micro- and nanoarchitectures can be spontaneously fabricated using chemical reactions initiated by wet stamping (WETS) and propelled by diffusive transport of participating reagents. Desired small-scale structures emerge as a result of complex sequences of reaction-diffusion events. These events are encoded in the chemical kinetics and transport properties of the system's components, and in the system's geometry. With various types of chemistries and initial conditions imposed…
Various types of micro- and nanoarchitectures can be spontaneously fabricated using chemical reactions initiated by wet stamping (WETS) and propelled by diffusive transport of participating reagents. Desired small-scale structures emerge as a result of complex sequences of reaction-diffusion events. These events are encoded in the chemical kinetics and transport properties of the system's components, and in the system's geometry. With various types of chemistries and initial conditions imposed by WETS, it is possible to ‘program’ different fabrication tasks and make technologically useful structures, such as microlens arrays, microfluidic systems, diffractive elements, and supports for cell studies.
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Plastic and Moldable Metals by Self-Assembly of Sticky Nanoparticle Aggregates
Science
Deformable, spherical aggregates of metal nanoparticles connected by long-chain dithiol ligands self-assemble into nanostructured materials of macroscopic dimensions. These materials are plastic and moldable against arbitrarily shaped masters and can be thermally hardened into polycrystalline metal structures of controllable porosity. In addition, in both plastic and hardened states, the assemblies are electrically conductive and exhibit Ohmic characteristics down to approximately 20 volts per…
Deformable, spherical aggregates of metal nanoparticles connected by long-chain dithiol ligands self-assemble into nanostructured materials of macroscopic dimensions. These materials are plastic and moldable against arbitrarily shaped masters and can be thermally hardened into polycrystalline metal structures of controllable porosity. In addition, in both plastic and hardened states, the assemblies are electrically conductive and exhibit Ohmic characteristics down to approximately 20 volts per meter. The self-assembly method leading to such materials is applicable both to pure metals and to bimetallic structures of various elemental compositions.
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Direct Printing of 3D and Curvilinear Micrometer-Sized Architectures into Solid Substrates with Sub-micrometer Resolution
Advanced Materials
An experimental method based on reaction diffusion for direct printing of 3D and curvilinear micrometer-sized architectures into solid substrates with sub-micrometer resolution was discussed. The allows for bench-top prototyping of curvilinear and/or multilevel reliefs in solid materials with lateral resolution. Hydrogel stamps were replicated from micropatterned masters, soaked in a chemical etchant, and then used to print entire microdevices into solid substrates with full retention of the…
An experimental method based on reaction diffusion for direct printing of 3D and curvilinear micrometer-sized architectures into solid substrates with sub-micrometer resolution was discussed. The allows for bench-top prototyping of curvilinear and/or multilevel reliefs in solid materials with lateral resolution. Hydrogel stamps were replicated from micropatterned masters, soaked in a chemical etchant, and then used to print entire microdevices into solid substrates with full retention of the stamp's topography and with excellent surface smoothness. The technique combines the ease and flexibility of replicating soft materials with the durability and other desirable properties of solids. The method is useful to scientists as it rapidly prototypes and tests various small-scale structures in hard substrates for use in microfluids, microoptics, and microelectrics and can be further optimized by identifying porous materials.
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Self-organization of planar microlenses by periodic precipitation
Journal of Applied Physics
Arrays of planar, Fresnel-like microlenses are prepared by a spontaneous chemical process of periodic precipitation (PP) occurring in a thin layer of a dry gel, and initiated by wet stamping. The PP lenses focus white light more efficiently than the conventional Fresnel zone plates of similar dimensions. Nanoscale topographies of the micropatterned gels can be replicated into transparent elastomers, and used for focusing based on optical path differences. Experimental observations for both…
Arrays of planar, Fresnel-like microlenses are prepared by a spontaneous chemical process of periodic precipitation (PP) occurring in a thin layer of a dry gel, and initiated by wet stamping. The PP lenses focus white light more efficiently than the conventional Fresnel zone plates of similar dimensions. Nanoscale topographies of the micropatterned gels can be replicated into transparent elastomers, and used for focusing based on optical path differences. Experimental observations for both types of structures are in agreement with the Fresnel diffraction calculations.
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Principles and Implementations of Dissipative (Dynamic) Self-Assembly
The Journal of Physical Chemistry B
Dynamic self-assembly (DySA) processes occurring outside of thermodynamic equilibrium underlie many forms of adaptive and intelligent behaviors in natural systems. Relatively little, however, is known about the principles that govern DySA and the ways in which it can be extended to artificial ensembles. This article discusses recent advances in both the theory and the practice of nonequilibrium self-assembly. It is argued that a union of ideas from thermodynamics and dynamic systems' theory can…
Dynamic self-assembly (DySA) processes occurring outside of thermodynamic equilibrium underlie many forms of adaptive and intelligent behaviors in natural systems. Relatively little, however, is known about the principles that govern DySA and the ways in which it can be extended to artificial ensembles. This article discusses recent advances in both the theory and the practice of nonequilibrium self-assembly. It is argued that a union of ideas from thermodynamics and dynamic systems' theory can provide a general description of DySA. In parallel, heuristic design rules can be used to construct DySA systems of increasing complexities based on a variety of suitable interactions/potentials on length scales from nanoscopic to macroscopic. Applications of these rules to magnetohydrodynamic DySA are also discussed.
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Nano- and microscopic surface wrinkles of linearly increasing heights prepared by periodic precipitation.
Journal of the American Chemical Society
Arrays of surface wrinkles of linearly increasing heights (from tens of nanometers to tens of micrometers) were prepared via a spontaneous reaction-diffusion process based on periodic precipitation. The slopes, dimensions, and positions of the precipitation bands could be controlled precisely by adjusting the concentrations of the participating chemicals as well as the material properties of patterned substrates. Additional control of periodic precipitation by localized UV irradiation allowed…
Arrays of surface wrinkles of linearly increasing heights (from tens of nanometers to tens of micrometers) were prepared via a spontaneous reaction-diffusion process based on periodic precipitation. The slopes, dimensions, and positions of the precipitation bands could be controlled precisely by adjusting the concentrations of the participating chemicals as well as the material properties of patterned substrates. Additional control of periodic precipitation by localized UV irradiation allowed for the preparation of discontinuous and curvilinear structures. The nonbinary 3D surface topographies were replicated into poly(dimethylsiloxane), and the applications of replicas in microfluidics, microseparations, and cell biology have been suggested.
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Architecture and Evolution of Organic Chemistry
ANGEWANDTE CHEMIE INTERNATIONAL EDITION
Organic syntheses reported in the literature between 1850 and 2000 are analyzed at the simplified level of a connected network (see the picture of the network for 1850). Fundamental statistical laws that govern organic syntheses are established. These laws allow the estimation of the synthetic and industrial usefulness of organic molecules.
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Molecular dynamics imaging in micropatterned living cells
Nature Methods
Micropatterning approaches using self-assembled monolayers of alkyl thiols on gold are not optimal for important imaging modalities in cell biology because of absorption of light and scattering of electrons by the gold layer. We report here an anisotropic solid microetching (ASOMIC) procedure that overcomes these limitations. The method allows molecular dynamics imaging by wide-field and total internal reflection fluorescence (TIRF) microscopy of living mammalian cells and correlative platinum…
Micropatterning approaches using self-assembled monolayers of alkyl thiols on gold are not optimal for important imaging modalities in cell biology because of absorption of light and scattering of electrons by the gold layer. We report here an anisotropic solid microetching (ASOMIC) procedure that overcomes these limitations. The method allows molecular dynamics imaging by wide-field and total internal reflection fluorescence (TIRF) microscopy of living mammalian cells and correlative platinum replica electron microscopy.
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Micro and nanotechnology via reaction–diffusion
Soft Matter
Reaction–diffusion (RD) processes are common throughout nature, which uses them routinely to build and control structures on length scales from molecular to macroscopic. At the same time, despite a long history of scientific research and a significant level of understanding of the basic aspects of RD, reaction–diffusion has remained an unrealized technological opportunity. This review suggests that RD systems can provide a versatile basis for applications in micro- and nanotechnology…
Reaction–diffusion (RD) processes are common throughout nature, which uses them routinely to build and control structures on length scales from molecular to macroscopic. At the same time, despite a long history of scientific research and a significant level of understanding of the basic aspects of RD, reaction–diffusion has remained an unrealized technological opportunity. This review suggests that RD systems can provide a versatile basis for applications in micro- and nanotechnology. Straightforward experimental methods are described that allow precise control of RD processes in complex microgeometries and enable fabrication of small-scale structures, devices, and functional systems. Uses of RD in sensory applications are also discussed.
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Cutting into Solids with Micropatterned Gels
Advanced Materials
A simple, versatile and reliable method of microstructuring solid supports using micropatterned gels was described. It was demonstrated that micropatterned hydrogel stamps can be used to remove material from solid surfaces and can thus be used to microstructure metals, glasses and crystals with micrometer-scale precision. The immersion wet stamping (i-WETS) technique proved equally successful in microstructuring surfaces of monocrystals with depths of the depressions up to 80 μm, sharp edges…
A simple, versatile and reliable method of microstructuring solid supports using micropatterned gels was described. It was demonstrated that micropatterned hydrogel stamps can be used to remove material from solid surfaces and can thus be used to microstructure metals, glasses and crystals with micrometer-scale precision. The immersion wet stamping (i-WETS) technique proved equally successful in microstructuring surfaces of monocrystals with depths of the depressions up to 80 μm, sharp edges and lateral spreading less than 5% of the diameter of the stamped features. It was shown that in specific applications, it might be necessary to use hydrogels other than agarose to make the stamps compatible with desirable etchants.
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Amplification of Changes of a Thin Film's Macromolecular Structure into Macroscopic Reaction−Diffusion Patterns
Journal of the American Chemical Society
A reaction-diffusion process induced from a micronetwork geometry amplifies changes in the molecular structure of a thin gel film into macroscopic readout patterns. When the gel undergoes a helix-to-coil phase transition, the patterns formed by RD switch from symmetry-broken to symmetric ones. Theoretical analysis explains how the system reconfigures internally in response to mass transfer between the applied network and the probed film.
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Freestanding Three‐Dimensional Copper Foils Prepared by Electroless Deposition on Micropatterned Gels
Advanced Materials
A versatile and reliable method based on electroless plating that overcomes many limitations and allows preparation of either freestanding or polymer-supported 3D copper films with complex topographies was discussed. The metal was deposited on the surface of a rectangular block of a hydrogel micropatterned in bas-relief in this method. This block was first soaked in solutions of an electroless-plating sensitizer and activator, and then immersed in a copper-plating solution. The fabrication of…
A versatile and reliable method based on electroless plating that overcomes many limitations and allows preparation of either freestanding or polymer-supported 3D copper films with complex topographies was discussed. The metal was deposited on the surface of a rectangular block of a hydrogel micropatterned in bas-relief in this method. This block was first soaked in solutions of an electroless-plating sensitizer and activator, and then immersed in a copper-plating solution. The fabrication of 3D copper foils was also discussed. The roughness of the back sides of the foils increased with increasing times of soaking in the activating Pd solution. The reaction-diffusion phenomena were described by a set of partial differential equations.
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Reactive surface micropatterning by wet stamping
Langmuir
Hydrogel stamps are used to reactively micropattern various types of substrates. The method, called reactive wet stamping (r-WETS), is general in nature and overcomes several limitations of conventional soft-lithographic techniques. Illustrative applications of r-WETS in surface wettability modification, deposition of metallic microstructures, preparation of supports for electrostatic self-assembly, and multistep reactive patterning are discussed.
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One-Step Multilevel Microfabrication by Reaction−Diffusion
Langmuir
A new experimental technique is described that uses reaction--diffusion phenomena as a means of one-step microfabrication of complex, multilevel surface reliefs. Thin films of dry gelatin doped with potassium hexacyanoferrate are chemically micropatterned with a solution of silver nitrate delivered from an agarose stamp. Precipitation reaction between the two salts causes the surface to deform. The mechanism of surface deformation is shown to involve a sequence of reactions, diffusion, and gel…
A new experimental technique is described that uses reaction--diffusion phenomena as a means of one-step microfabrication of complex, multilevel surface reliefs. Thin films of dry gelatin doped with potassium hexacyanoferrate are chemically micropatterned with a solution of silver nitrate delivered from an agarose stamp. Precipitation reaction between the two salts causes the surface to deform. The mechanism of surface deformation is shown to involve a sequence of reactions, diffusion, and gel swelling/contraction. This mechanism is established experimentally and provides a basis of a theoretical lattice-gas model that allows prediction surface topographies emerging from arbitrary geometries of the stamped features. The usefulness of the technique is demonstrated by using it to rapidly prepare two types of mold for passive microfluidic mixers.
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Color Micro‐ and Nanopatterning with Counter‐Propagating Reaction–Diffusion Fronts
Advanced Materials
The system in which reaction-diffusion (RD) transforms microscopic patterns of chemicals delivered onto thin films of dry gelatin into regular arrays of lines was analyzed. It was observed that the color-patterned gels were used as high-quality diffraction gratings and photolithographic masks. It was observed that the colored portions of the films prepared with concentrated (1 M) FeCl3 were opaque to UV radiation and the photoresist had binary topography. The color-patterned gels were also used…
The system in which reaction-diffusion (RD) transforms microscopic patterns of chemicals delivered onto thin films of dry gelatin into regular arrays of lines was analyzed. It was observed that the color-patterned gels were used as high-quality diffraction gratings and photolithographic masks. It was observed that the colored portions of the films prepared with concentrated (1 M) FeCl3 were opaque to UV radiation and the photoresist had binary topography. The color-patterned gels were also used in the fabrication of arrays of planar wave-guides and in sensory/assay applications.
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Multicolour micropatterning of thin films of dry gels
Nature Materials
Micropatterning of surfaces with several chemicals at different spatial locations usually requires multiple stamping and registration steps. Here, we describe an experimental method based on reaction-diffusion phenomena that allows for simultaneous micropatterning of a substrate with several coloured chemicals. In this method, called wet stamping (WETS), aqueous solutions of two or more inorganic salts are delivered onto a film of dry, ionically doped gelatin from an agarose stamp patterned in…
Micropatterning of surfaces with several chemicals at different spatial locations usually requires multiple stamping and registration steps. Here, we describe an experimental method based on reaction-diffusion phenomena that allows for simultaneous micropatterning of a substrate with several coloured chemicals. In this method, called wet stamping (WETS), aqueous solutions of two or more inorganic salts are delivered onto a film of dry, ionically doped gelatin from an agarose stamp patterned in bas relief. Once in conformal contact, these salts diffuse into the gelatin, where they react to give deeply coloured precipitates. Separation of colours in the plane of the surface is the consequence of the differences in the diffusion coefficients, the solubility products, and the amounts of different salts delivered from the stamp, and is faithfully reproduced by a theoretical model based on a system of reaction-diffusion partial differential equations. The multicolour micropatterns are useful as non-binary optical elements, and could potentially form the basis of new applications in microseparations and in controlled delivery.
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Arrays of microlenses of complex shapes prepared by reaction-diffusion in thin films of ionically doped gels
Applied Physics Letters
This letter describes a wet-stamping technique for the fabrication of highly regular arrays of microlenses through reaction-diffusion-swelling processes occurring in a thin film of ionically doped gelatin. Geometrical parameters of the lenses depend on and can be controlled by the geometries of the stamped features and the concentrations of chemicals diffusing and reacting in the gelatin matrix. Surface topographies of the lenses are studied experimentally, and are reproduced by a lattice gas…
This letter describes a wet-stamping technique for the fabrication of highly regular arrays of microlenses through reaction-diffusion-swelling processes occurring in a thin film of ionically doped gelatin. Geometrical parameters of the lenses depend on and can be controlled by the geometries of the stamped features and the concentrations of chemicals diffusing and reacting in the gelatin matrix. Surface topographies of the lenses are studied experimentally, and are reproduced by a lattice gas reaction-diffusion model.
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Microfluidic mixers: From microfabricated to self-assembling devices
PHILOSOPHICAL TRANSACTIONS OF THE ROYAL SOCIETY A MATHEMATICAL PHYSICAL AND ENGINEERING SCIENCES
This paper begins with a survey of both passive and active microfluidic mixers that have been implemented in recent years. It then describes a micromixing device based on dynamic self-assembly. This device is easy to fabricate and has excellent working characteristics in the continuous-flow mode. The paper concludes with a brief discussion of possible applications of self-assembly in microfluidics.
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Absorption of Water by Thin, Ionic Films of Gelatin
Langmuir
This paper discusses absorption of water by thin, dry films of gelatin. Experiments using a wet-stamping technique were performed to characterize water uptake in terms of (i) equilibrium profiles of the water density inside the gel and (ii) the kinetics of water absorption. It was found that, in contrast to pure gelatin films, which absorb water approximately uniformly, films of gelatin doped with ionic additives have exponentially decaying equilibrium water profiles. The process of water…
This paper discusses absorption of water by thin, dry films of gelatin. Experiments using a wet-stamping technique were performed to characterize water uptake in terms of (i) equilibrium profiles of the water density inside the gel and (ii) the kinetics of water absorption. It was found that, in contrast to pure gelatin films, which absorb water approximately uniformly, films of gelatin doped with ionic additives have exponentially decaying equilibrium water profiles. The process of water absorption by both doped and undoped gels was described by a theoretical model based on the minimization of grand potential functional. The results of this model are in agreement with the experiment.
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Complexity and dynamic self-assembly
Chemical Engineering Science
Physico-chemical complex systems are composed of many non-linearly interacting components, operate away from thermodynamic equilibrium, are adaptive to their environment, and often organize into patterns. Understanding the principles that govern such systems might lead to better understanding of life and to new types of technological applications. This contribution describes a bottom-up approach to studying complex systems, in which they are “synthesized” from smaller subunits and properly…
Physico-chemical complex systems are composed of many non-linearly interacting components, operate away from thermodynamic equilibrium, are adaptive to their environment, and often organize into patterns. Understanding the principles that govern such systems might lead to better understanding of life and to new types of technological applications. This contribution describes a bottom-up approach to studying complex systems, in which they are “synthesized” from smaller subunits and properly tailored interactions; the “synthesis” is guided by a set of heuristic design rules. This approach was used to develop a class of dissipative complex systems based on magnetic and hydrodynamic interactions. Some of the designed ensembles were the basis of successful microfluidic and mechanical devices.
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Self-assembling fluidic machines
Applied Physics Letters
This letter describes dynamic self-assembly of two-component rotors floating at the interface between liquid and air into simple, reconfigurable mechanical systems (“machines”). The rotors are powered by an external, rotating magnetic field, and their positions within the interface are controlled by: (i) repulsive hydrodynamic interactions between them and (ii) by localized magnetic fields produced by an array of small electromagnets located below the plane of the interface. The mechanical…
This letter describes dynamic self-assembly of two-component rotors floating at the interface between liquid and air into simple, reconfigurable mechanical systems (“machines”). The rotors are powered by an external, rotating magnetic field, and their positions within the interface are controlled by: (i) repulsive hydrodynamic interactions between them and (ii) by localized magnetic fields produced by an array of small electromagnets located below the plane of the interface. The mechanical functions of the machines depend on the spatiotemporal sequence of activation of the electromagnets.
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Patents
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Discrete coating of liquid on a liquid-coated substrate and use in forming laminates
Issued JP JP6430955
A process including positioning a coating head to define a gap between a first external opening in flow communication with a source of a first coating liquid, and a major surface of a substrate; creating relative motion between the first coating head and the substrate; dispensing a pre-determined quantity of the first coating liquid to form a discrete patch in a predetermined position on the substrate's major surface; positioning a second coating head to define a gap between a second external…
A process including positioning a coating head to define a gap between a first external opening in flow communication with a source of a first coating liquid, and a major surface of a substrate; creating relative motion between the first coating head and the substrate; dispensing a pre-determined quantity of the first coating liquid to form a discrete patch in a predetermined position on the substrate's major surface; positioning a second coating head to define a gap between a second external opening in flow communication with a source of a second coating liquid and a major surface of the patch; creating relative motion between the second coating head and the substrate, and dispensing a pre-determined quantity of the second coating liquid to form a discontinuous pattern on the patch's major surface. The first and optionally the second coating liquids exhibit a viscosity as dispensed of at least 1 Pascal-sec.
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Precision Coating of Viscous Liquids and Use In Forming Laminates
Issued TW I641429
A process including providing a coating head having an external opening in flow communication with a source of a first coating liquid, positioning the coating head relative to a substrate to define a gap between the external opening and the substrate, creating relative motion between the coating head and the substrate in a coating direction, and dispensing a predetermined quantity of the first coating liquid from the external opening onto at least a portion of at least one major surface of the…
A process including providing a coating head having an external opening in flow communication with a source of a first coating liquid, positioning the coating head relative to a substrate to define a gap between the external opening and the substrate, creating relative motion between the coating head and the substrate in a coating direction, and dispensing a predetermined quantity of the first coating liquid from the external opening onto at least a portion of at least one major surface of the substrate to form a discrete patch of the first coating liquid in a predetermined position on at least a portion of the major surface of the substrate. The first coating liquid as dispensed exhibits a viscosity of at least 1 Pascal-sec. In some exemplary embodiments, the first coating liquid is a liquid optically clear adhesive composition used in a laminate including a light emitting or reflecting device component.
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Curable and cured adhesive compositions
Issued EU 2475731
Curable adhesive compositions, cured adhesive compositions, and articles that include the cured adhesive compositions are described. The curable adhesive composition contains a) an epoxy resin, b) a curing agent, c) a reactive liquid modifier, d) a toughening agent, and e) an oil displacing agent. The cured adhesive compositions can be used as structural adhesives.
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Liquid optical adhesive compositions
Issued JP 6381542
The disclosure describes a curable composition comprising a first oligomer having a plurality of polymerizable groups; a second component comprising alkylene oxide repeat units and terminal polymerizable groups, a solvent monomer component; and a photoinitiator. The curable composition may be used as an adhesive in optical applications.
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Curable compositions
Issued EU 2638093
Curable compositions, cured compositions, and articles that include the cured compositions are described. The curable composition contains a) an epoxy resin, b) a curing agent, c) a reactive liquid modifier, and d) a toughening agent. The cured compositions can be used as structural adhesives. The reactive liquid modifier is an acetoacetate ester of a dimer alcohol. The cured compositions can be used as adhesives such as structural adhesives or as polymeric coatings.
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Liquid optical adhesive compositions
Issued US US10035334
The disclosure describes a curable composition comprising a) a solute (meth)acryloyl oligomer having a plurality of pendent, ethylenically unsaturated, free-radically polymerizable functional groups and nucleophilic, hydrophilic groups, a Mw of 5k to 30k, a Tg < 20˚C; b) a solvent monomer component; a chain transfer agent, and a photoinitiator. The curable composition may be used as an adhesive in optical applications.
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Liquid optical adhesive compositions
Issued US US10035328
The disclosure describes a curable composition comprising a) a solute (meth) acryloyl oligomer having a plurality of pendent, ethylenically unsaturated, free- radically polymerizable functional groups and nucleophilic, hydrophilic groups, a Mw of 5k to 30k. a Tg < 20°C; b) a solvent monomer component; and non-reactive oligomer an a photolnitiator. The -curable composition may be used as an adhesive in optical applications.
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Precision Coating of Viscous Liquids and Use in Forming Laminates
Issued CN 104812501
A process including providing a coating head having an external opening in flow communication with a source of a first coating liquid, positioning the coating head relative to a substrate to define a gap between the external opening and the substrate, creating relative motion between the coating head and the substrate in a coating direction, and dispensing a predetermined quantity of the first coating liquid from the external opening onto at least a portion of at least one major surface of the…
A process including providing a coating head having an external opening in flow communication with a source of a first coating liquid, positioning the coating head relative to a substrate to define a gap between the external opening and the substrate, creating relative motion between the coating head and the substrate in a coating direction, and dispensing a predetermined quantity of the first coating liquid from the external opening onto at least a portion of at least one major surface of the substrate to form a discrete patch of the first coating liquid in a predetermined position on at least a portion of the major surface of the substrate. The first coating liquid as dispensed exhibits a viscosity of at least 1 Pascal-sec. In some exemplary embodiments, the first coating liquid is a liquid optically clear adhesive composition used in a laminate including a light emitting or reflecting device component.
Other inventors -
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Liquid optical adhesive compositions
Issued CN CN105745237
The disclosure describes a curable composition comprising a) a solute (meth)acryloyl oligomer having a plurality of pendent, ethylenically unsaturated, free-radically polymerizable functional groups and nucleophilic, hydrophilic groups, a Mw of 5k to 30k, a Tg < 20˚C; b) a solvent monomer component; a chain transfer agent, and a photoinitiator. The curable composition may be used as an adhesive in optical applications.
Other inventors -
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Liquid optical adhesive compositions
Issued JP 6333241
The disclosure describes a curable composition comprising a) a solute (meth)acryloyl oligomer having a plurality of pendent, ethylenically unsaturated, free-radically polymerizable functional groups and nucleophilic, hydrophilic groups, a) Mw of 5k to 30k, a Tg < 20°C; b) a solvent monomer component; and a photoinitiator. The curable composition may be used as an adhesive in optical applications.
Other inventors -
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Liquid Optical Adhesive Compositions
Issued EU EP3071612
The disclosure describes a curable composition comprising a) a solute (meth)acryloyl oligomer having a plurality of pendent, ethylenically unsaturated, free-radically polymerizable functional groups and nucleophilic, hydrophilic groups, a Mw of 5k to 30k, a Tg < 20˚C; b) a solvent monomer component; a chain transfer agent, and a photoinitiator. The curable composition may be used as an adhesive in optical applications.
Other inventors -
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Profiled coatings for enabling vacuumless lamination of stencil printed liquid optically clear adhesives
Issued CN CN105829475
A method of stencil printing includes printing a layer of non-sag adhesive onto a first substrate, adding topography to the layer of non-sag adhesive, and contacting the layer of non-sag adhesive with a second substrate. The second substrate initially contacts only about 5% or less of exposed surface area of the layer of non-sag adhesive.
Other inventors -
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Liquid optical adhesive compositions
Issued US 9890304
The disclosure describes a curable composition comprising a first oligomer having a plurality of polymerizable groups; a second component comprising alkylene oxide repeat units and terminal polymerizable groups, a solvent monomer component; and a photoinitiator. The curable composition may be used as an adhesive in optical applications.
Other inventors -
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Discrete coating of liquid on a liquid-coated substrate and use in forming laminates
Issued TW I605881
A process including positioning a coating head to define a gap between a first external opening in flow communication with a source of a first coating liquid, and a major surface of a substrate; creating relative motion between the first coating head and the substrate; dispensing a pre-determined quantity of the first coating liquid to form a discrete patch in a predetermined position on the substrate's major surface; positioning a second coating head to define a gap between a second external…
A process including positioning a coating head to define a gap between a first external opening in flow communication with a source of a first coating liquid, and a major surface of a substrate; creating relative motion between the first coating head and the substrate; dispensing a pre-determined quantity of the first coating liquid to form a discrete patch in a predetermined position on the substrate's major surface; positioning a second coating head to define a gap between a second external opening in flow communication with a source of a second coating liquid and a major surface of the patch; creating relative motion between the second coating head and the substrate, and dispensing a pre-determined quantity of the second coating liquid to form a discontinuous pattern on the patch's major surface. The first and optionally the second coating liquids exhibit a viscosity as dispensed of at least 1 Pascal-sec.
Other inventors -
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Curable compositions
Issued KR 101794388
Curable compositions, cured compositions, and articles that include the cured compositions are described. The curable composition contains a) an epoxy resin, b) a curing agent, c) a reactive liquid modifier, and d) a toughening agent. The cured compositions can be used as structural adhesives. The reactive liquid modifier is an acetoacetate ester of a dimer alcohol. The cured compositions can be used as adhesives such as structural adhesives or as polymeric coatings.
Other inventors -
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Curable and cured compositions
Issued KR 101794389
Curable compositions, cured compositions, and articles that include the cured compositions are described. The curable composition contains a) an epoxy resin, b) a curing agent, c) a reactive liquid modifier, and d) a toughening agent. The reactive liquid modifier is an acetoacetate ester of a polyol that is a vegetable oil, that is prepared from a vegetable oil, or that is a mixture thereof. The cured compositions can be used as adhesives such as structural adhesives or as polymeric coatings.
Other inventors -
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Curable and cured adhesive compositions
Issued IN 288076
Curable adhesive compositions, cured adhesive compositions, and articles that include the cured adhesive compositions are described. The curable adhesive composition contains a) an epoxy resin, b) a curing agent, c) a reactive liquid modifier, and d) a toughening agent. The cured adhesive compositions can be used as structural adhesives.
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Precision Coating of Viscous Liquids and Use in Forming Laminates
Issued US 9738816
A process including providing a coating head having an external opening in flow communication with a source of a first coating liquid, positioning the coating head relative to a substrate to define a gap between the external opening and the substrate, creating relative motion between the coating head and the substrate in a coating direction, and dispensing a predetermined quantity of the first coating liquid from the external opening onto at least a portion of at least one major surface of the…
A process including providing a coating head having an external opening in flow communication with a source of a first coating liquid, positioning the coating head relative to a substrate to define a gap between the external opening and the substrate, creating relative motion between the coating head and the substrate in a coating direction, and dispensing a predetermined quantity of the first coating liquid from the external opening onto at least a portion of at least one major surface of the substrate to form a discrete patch of the first coating liquid in a predetermined position on at least a portion of the major surface of the substrate. The first coating liquid as dispensed exhibits a viscosity of at least 1 Pascal-sec. In some exemplary embodiments, the first coating liquid is a liquid optically clear adhesive composition used in a laminate including a light emitting or reflecting device component.
Other inventors -
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Discrete coating of liquid on a liquid-coated substrate and use in forming laminates
Issued CN CN104837567
A process including positioning a coating head to define a gap between a first external opening in flow communication with a source of a first coating liquid, and a major surface of a substrate; creating relative motion between the first coating head and the substrate; dispensing a pre-determined quantity of the first coating liquid to form a discrete patch in a predetermined position on the substrate's major surface; positioning a second coating head to define a gap between a second external…
A process including positioning a coating head to define a gap between a first external opening in flow communication with a source of a first coating liquid, and a major surface of a substrate; creating relative motion between the first coating head and the substrate; dispensing a pre-determined quantity of the first coating liquid to form a discrete patch in a predetermined position on the substrate's major surface; positioning a second coating head to define a gap between a second external opening in flow communication with a source of a second coating liquid and a major surface of the patch; creating relative motion between the second coating head and the substrate, and dispensing a pre-determined quantity of the second coating liquid to form a discontinuous pattern on the patch's major surface. The first and optionally the second coating liquids exhibit a viscosity as dispensed of at least 1 Pascal-sec.
Other inventors -
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Liquid optical adhesive compositions
Issued JP 6134066
The disclosure describes a curable composition comprising a) a solute (meth) acryloyl oligomer having a plurality of pendent, ethylenically unsaturated, free- radically polymerizable functional groups and nucleophilic, hydrophilic groups, a Mw of 5k to 30k. a Tg < 20°C; b) a solvent monomer component; and non-reactive oligomer an a photolnitiator. The -curable composition may be used as an adhesive in optical applications.The disclosure describes a curable composition comprising a) a solute…
The disclosure describes a curable composition comprising a) a solute (meth) acryloyl oligomer having a plurality of pendent, ethylenically unsaturated, free- radically polymerizable functional groups and nucleophilic, hydrophilic groups, a Mw of 5k to 30k. a Tg < 20°C; b) a solvent monomer component; and non-reactive oligomer an a photolnitiator. The -curable composition may be used as an adhesive in optical applications.The disclosure describes a curable composition comprising a) a solute (meth) acryloyl oligomer having a plurality of pendent, ethylenically unsaturated, free- radically polymerizable functional groups and nucleophilic, hydrophilic groups, a Mw of 5k to 30k. a Tg < 20°C; b) a solvent monomer component; and non-reactive oligomer an a photolnitiator. The -curable composition may be used as an adhesive in optical applications.
Other inventors -
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Liquid optical adhesive compositions
Issued JP 6135067
The disclosure describes a curable composition comprising a) a solute (meth)acryloyl oligomer having a plurality of pendent, ethylenically unsaturated, free-radically polymerizable functional groups and nucleophilic, hydrophilic groups, a Mw of 5 k to 30 k, a Tg<20° C.; b) a solvent monomer component; a chain transfer agent, and a photoinitiator. The curable composition may be used as an adhesive in optical applications.
Other inventors -
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Curable and cured adhesive compositions
Issued IN 283330
Curable adhesive compositions, cured adhesive compositions, and articles that include the cured adhesive compositions are described. The curable adhesive composition contains a) an epoxy resin, b) a curing agent, c) a reactive liquid modifier, d) a toughening agent, and e) an oil displacing agent. The cured adhesive compositions can be used as structural adhesives.
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Liquid optical adhesive compositions
Issued KR 101728652
The disclosure describes a curable composition comprising a) a solute (meth) acryloyl oligomer having a plurality of pendent, ethylenically unsaturated, free- radically polymerizable functional groups and nucleophilic, hydrophilic groups, a Mw of 5k to 30k. a Tg < 20°C; b) a solvent monomer component; and non-reactive oligomer an a photolnitiator. The -curable composition may be used as an adhesive in optical applications.
Other inventors -
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Profiled coatings for enabling vacuumless lamination of stencil printed liquid optically clear adhesives
Issued US 9623644
A method of stencil printing includes printing a layer of non-sag adhesive onto a first substrate, adding topography to the layer of non-sag adhesive, and contacting the layer of non-sag adhesive with a second substrate. The second substrate initially contacts only about 5% or less of exposed surface area of the layer of non-sag adhesive.
Other inventors -
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Liquid optical adhesive compositions
Issued TW 577773
The disclosure describes a curable composition comprising a) a solute (meth)acryloyl oligomer having a plurality of pendent, ethylenically unsaturated, free-radically polymerizable functional groups and nucleophilic, hydrophilic groups, a) Mw of 5k to 30k, a Tg < 20°C; b) a solvent monomer component; and a photoinitiator. The curable composition may be used as an adhesive in optical applications.
Other inventors -
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Curable and cured adhesive compositions
Issued US 9528035
Curable adhesive compositions, cured adhesive compositions, and articles that include the cured adhesive compositions are described. The curable adhesive composition contains a) an epoxy resin, b) a curing agent, c) a reactive liquid modifier, d) a toughening agent, and e) an oil displacing agent. The cured adhesive compositions can be used as structural adhesives.
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Method of coating liquid optically clear adhesives onto rigid substrates
Issued JP 6033313
A method for making an optical assembly is disclosed. The method involves disposing a liquid optically clear composition with a coating head. The liquid optically clear composition is disposed onto a target substrate to form an optically clear adhesive layer for adhering elements in an optical assembly. The optical assembly includes a display panel bonded to another optical component and may be used in a display device.
Other inventors -
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Method of coating liquid optically clear adhesives onto rigid substrates
Issued CN 103827245
A method for making an optical assembly is disclosed. The method involves disposing a liquid optically clear composition with a coating head. The liquid optically clear composition is disposed onto a target substrate to form an optically clear adhesive layer for adhering elements in an optical assembly. The optical assembly includes a display panel bonded to another optical component and may be used in a display device.
Other inventors -
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Liquid Optical Adhesive Compositions
Issued KR 101642635
The disclosure describes a curable composition comprising a) a solute (meth)acryloyl oligomer having a plurality of pendent, ethylenically unsaturated, free-radically polymerizable functional groups and nucleophilic, hydrophilic groups, a) Mw of 5k to 30k, a Tg < 20°C; b) a solvent monomer component; and a photoinitiator. The curable composition may be used as an adhesive in optical applications.
Other inventors -
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Liquid Optical Adhesive Compositions
Issued US 9,309,443
The disclosure describes a curable composition comprising a)
a solute (meth)acryloyl oligomer having a plurality of pendent,
ethylenically unsaturated, free-radically polymerizable
functional groups and nucleophilic, hydrophilic groups, a)
Mw of 5 k to 30 k, a Tg<20° C.; b) a solvent monomer
component; and a photoinitiator. The curable composition
may be used as an adhesive in optical applications.Other inventors -
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Curable and Cured Compositions
Issued US 9290683
Curable compositions, cured compositions, and articles that include the cured compositions are described. The curable composition contains a) an epoxy resin, b) a curing agent, c) a reactive liquid modifier, and d) a toughening agent. The reactive liquid modifier is an acetoacetate ester of a polyol that is a vegetable oil, that is prepared from a vegetable oil, or that is a mixture thereof. The cured compositions can be used as adhesives such as structural adhesives or as polymeric coatings.
Other inventors -
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Two-part epoxy-based structural adhesives
Issued JP 5856243
A two-part epoxy-based structural adhesive composition comprising a curable epoxy resin, an amine curing agent, a toughening agent, and an oil-displacing agent. The structural adhesive may optionally include reactive liquid modifiers, fillers, secondary curatives, reactive diluents, surfactants, metal salts, pigments and combinations thereof. The structural adhesive may be used to form bonded joints between adherends having clean surfaces, as well as those having surfaces contaminated with…
A two-part epoxy-based structural adhesive composition comprising a curable epoxy resin, an amine curing agent, a toughening agent, and an oil-displacing agent. The structural adhesive may optionally include reactive liquid modifiers, fillers, secondary curatives, reactive diluents, surfactants, metal salts, pigments and combinations thereof. The structural adhesive may be used to form bonded joints between adherends having clean surfaces, as well as those having surfaces contaminated with hydrocarbon-containing materials, such as oils, processing aids and lubricating agents.
Other inventors -
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Curable and cured compositions
Issued CN 103221450
Curable compositions, cured compositions, and articles that include the cured compositions are described. The curable composition contains a) an epoxy resin, b) a curing agent, c) a reactive liquid modifier, and d) a toughening agent. The cured compositions can be used as structural adhesives. The reactive liquid modifier is an acetoacetate ester of a dimer alcohol. The cured compositions can be used as adhesives such as structural adhesives or as polymeric coatings.
Other inventors -
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Curable and Cured Compositions
Issued JP 5840219
Curable compositions, cured compositions, and articles that include the cured compositions are described. The curable composition contains a) an epoxy resin, b) a curing agent, c) a reactive liquid modifier, and d) a toughening agent. The reactive liquid modifier is an acetoacetate ester of a polyol that is a vegetable oil, that is prepared from a vegetable oil, or that is a mixture thereof. The cured compositions can be used as adhesives such as structural adhesives or as polymeric coatings.
Other inventors -
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Curable and Cured Compositions
Issued CN CN103189411
Curable compositions, cured compositions, and articles that include the cured compositions are described. The curable composition contains a) an epoxy resin, b) a curing agent, c) a reactive liquid modifier, and d) a toughening agent. The reactive liquid modifier is an acetoacetate ester of a polyol that is a vegetable oil, that is prepared from a vegetable oil, or that is a mixture thereof. The cured compositions can be used as adhesives such as structural adhesives or as polymeric coatings.
Other inventors -
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Method of coating liquid optically clear adhesives onto rigid substrates
Issued US 9169422
A method for making an optical assembly is disclosed. The method involves disposing a liquid optically clear composition with a coating head. The liquid optically clear composition is disposed onto a target substrate to form an optically clear adhesive layer for adhering elements in an optical assembly. The optical assembly includes a display panel bonded to another optical component and may be used in a display device.
Other inventors -
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Method of coating liquid optically clear adhesives onto rigid substrates
Issued KR 101557601
A method for making an optical assembly is disclosed. The method involves disposing a liquid optically clear composition with a coating head. The liquid optically clear composition is disposed onto a target substrate to form an optically clear adhesive layer for adhering elements in an optical assembly. The optical assembly includes a display panel bonded to another optical component and may be used in a display device.
Other inventors -
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Curable and Cured Compositions
Issued JP 5784134
Curable compositions, cured compositions, and articles that include the cured compositions are described. The curable composition contains a) an epoxy resin, b) a curing agent, c) a reactive liquid modifier, and d) a toughening agent. The cured compositions can be used as structural adhesives. The reactive liquid modifier is an acetoacetate ester of a dimer alcohol. The cured compositions can be used as adhesives such as structural adhesives or as polymeric coatings.
Other inventors -
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CURABLE AND CURED ADHESIVE COMPOSITIONS
Issued US 9139756
Curable adhesive compositions, cured adhesive compositions, and articles that include the cured adhesive compositions are described. The curable adhesive composition contains a) an epoxy resin, b) a curing agent, c) a reactive liquid modifier, and d) a toughening agent. The cured adhesive compositions can be used as structural adhesives.
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Curable and cured adhesive compositions
Issued JP 5752126
Curable adhesive compositions, cured adhesive compositions, and articles that include the cured adhesive compositions are described. The curable adhesive composition contains a) an epoxy resin, b) a curing agent, c) a reactive liquid modifier, d) a toughening agent, and e) an oil displacing agent. The cured adhesive compositions can be used as structural adhesives.
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Curable and cured compositions
Issued US 9051497
Curable compositions, cured compositions, and articles that include the cured compositions are described. The curable composition contains a) an epoxy resin, b) a curing agent, c) a reactive liquid modifier, and d) a toughening agent. The cured compositions can be used as structural adhesives. The reactive liquid modifier is an acetoacetate ester of a dimer alcohol. The cured compositions can be used as adhesives such as structural adhesives or as polymeric coatings.
Other inventors -
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ASSEMBLY BONDED TO A STRUCTURAL ADHESIVE AND METHOD AND APPLICATOR FOR MAKING IT
Issued US 8916020
The invention provides an assembly comprising at least one
substrate being bonded to a structural adhesive wherein the
structural adhesive is obtained by curing a precursor comprising
a cross-linkable polymer, wherein a surface area of the
substrate bonded to the structural adhesive comprises at least
one metal, said surface area being treated with a liquid activator.
Other inventors -
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Curable and cured adhesive compositions
Issued EU 2475730
Curable adhesive compositions, cured adhesive compositions, and articles that include the cured adhesive compositions are described. The curable adhesive composition contains a) an epoxy resin, b) a curing agent, c) a reactive liquid modifier, and d) a toughening agent. The cured adhesive compositions can be used as structural adhesives.
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Two-part epoxy-based structural adhesives
Issued CN 102159615
A two-part epoxy-based structural adhesive composition comprising a curable epoxy resin, an amine curing agent, a toughening agent, and an oil-displacing agent. The structural adhesive may optionally include reactive liquid modifiers, fillers, secondary curatives, reactive diluents, surfactants, metal salts, pigments and combinations thereof. The structural adhesive may be used to form bonded joints between adherends having clean surfaces, as well as those having surfaces contaminated with…
A two-part epoxy-based structural adhesive composition comprising a curable epoxy resin, an amine curing agent, a toughening agent, and an oil-displacing agent. The structural adhesive may optionally include reactive liquid modifiers, fillers, secondary curatives, reactive diluents, surfactants, metal salts, pigments and combinations thereof. The structural adhesive may be used to form bonded joints between adherends having clean surfaces, as well as those having surfaces contaminated with hydrocarbon-containing materials, such as oils, processing aids and lubricating agents.
Other inventors -
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Curable and cured compositions
Issued EU 2638092
Curable compositions, cured compositions, and articles that include the cured compositions are described. The curable composition contains a) an epoxy resin, b) a curing agent, c) a reactive liquid modifier, and d) a toughening agent. The reactive liquid modifier is an acetoacetate ester of a polyol that is a vegetable oil, that is prepared from a vegetable oil, or that is a mixture thereof. The cured compositions can be used as adhesives such as structural adhesives or as polymeric coatings.
Other inventors -
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Curable and cured adhesive compositions
Issued JP 5530524
Curable adhesive compositions, cured adhesive compositions, and articles that include the cured adhesive compositions are described. The curable adhesive composition contains a) an epoxy resin, b) a curing agent, c) a reactive liquid modifier, and d) a toughening agent. The cured adhesive compositions can be used as structural adhesives.
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Curable and cured adhesive compositions
Issued CN 102482548
Curable adhesive compositions, cured adhesive compositions, and articles that include the cured adhesive compositions are described. The curable adhesive composition contains a) an epoxy resin, b) a curing agent, c) a reactive liquid modifier, and d) a toughening agent. The cured adhesive compositions can be used as structural adhesives.
-
Two-part epoxy-based structural adhesives
Issued US 8618204
A two-part epoxy-based structural adhesive composition comprising a curable epoxy resin, an amine curing agent, a toughening agent, and an oil-displacing agent. The structural adhesive may optionally include reactive liquid modifiers, fillers, secondary curatives, reactive diluents, surfactants, metal salts, pigments and combinations thereof. The structural adhesive may be used to form bonded joints between adherends having clean surfaces, as well as those having surfaces contaminated with…
A two-part epoxy-based structural adhesive composition comprising a curable epoxy resin, an amine curing agent, a toughening agent, and an oil-displacing agent. The structural adhesive may optionally include reactive liquid modifiers, fillers, secondary curatives, reactive diluents, surfactants, metal salts, pigments and combinations thereof. The structural adhesive may be used to form bonded joints between adherends having clean surfaces, as well as those having surfaces contaminated with hydrocarbon-containing materials, such as oils, processing aids and lubricating agents.
Other inventors -
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Curable and cured adhesive compositions
Issued CN 102575138
Curable adhesive compositions, cured adhesive compositions, and articles that include the cured adhesive compositions are described. The curable adhesive composition contains a) an epoxy resin, b) a curing agent, c) a reactive liquid modifier, d) a toughening agent, and e) an oil displacing agent. The cured adhesive compositions can be used as structural adhesives.
-
Two-part epoxy-based structural adhesives
Issued EU 2310436
A two-part epoxy-based structural adhesive composition comprising a curable epoxy resin, an amine curing agent, a toughening agent, and an oil-displacing agent. The structural adhesive may optionally include reactive liquid modifiers, fillers, secondary curatives, reactive diluents, surfactants, metal salts, pigments and combinations thereof. The structural adhesive may be used to form bonded joints between adherends having clean surfaces, as well as those having surfaces contaminated with…
A two-part epoxy-based structural adhesive composition comprising a curable epoxy resin, an amine curing agent, a toughening agent, and an oil-displacing agent. The structural adhesive may optionally include reactive liquid modifiers, fillers, secondary curatives, reactive diluents, surfactants, metal salts, pigments and combinations thereof. The structural adhesive may be used to form bonded joints between adherends having clean surfaces, as well as those having surfaces contaminated with hydrocarbon-containing materials, such as oils, processing aids and lubricating agents.
Other inventors -
Organizations
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The Adhesion Society
Treasurer
- Present -
The Adhesion Society
Structural Adhesives Division Chair
- -
American Chemical Society
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