The Experts below are selected from a list of 3054 Experts worldwide ranked by ideXlab platform
Tamara Floyd-smith - One of the best experts on this subject based on the ideXlab platform.
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Microfluidics for Particle Synthesis from photocrosslinkable materials
Microfluidics and Nanofluidics, 2014Co-Authors: David Baah, Tamara Floyd-smithAbstract:This paper is a review of microfluidics for Particle Synthesis from photocrosslinkable materials. Microfluidics for Particle Synthesis is rapidly gaining attention as a viable method for the Synthesis of Particles with applications in drug delivery, security, abrasives, rheology, catalysis and other areas. Particle Synthesis can follow several schemes, but the focus of this review is Particle Synthesis from photocrosslinkable materials. In these systems, solid Particles are formed by the light-initiated cross-linking of precursor materials. This review begins with a discussion of photocrosslinkable materials, typically synthetic hydrogels for Particle Synthesis applications. Next, polydimethyl siloxane and glass devices are presented as the primary microfluidic devices for Synthesis from photocrosslinkable materials. Then, the review discusses three types of polymeric Particles: spherical, spheroidal and Janus. Subsequently, composite Particles and metal or metal oxide Particles are discussed. The review closes with a discussion of Particle throughput and the outlook for the field of Particle Synthesis from photocrosslinkable materials.
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Microfluidics for Particle Synthesis from photocrosslinkable materials
Microfluidics and Nanofluidics, 2014Co-Authors: David Baah, Tamara Floyd-smithAbstract:This paper is a review of microfluidics for Particle Synthesis from photocrosslinkable materials. Microfluidics for Particle Synthesis is rapidly gaining attention as a viable method for the Synthesis of Particles with applications in drug delivery, security, abrasives, rheology, catalysis and other areas. Particle Synthesis can follow several schemes, but the focus of this review is Particle Synthesis from photocrosslinkable materials. In these systems, solid Particles are formed by the light-initiated cross-linking of precursor materials. This review begins with a discussion of photocrosslinkable materials, typically synthetic hydrogels for Particle Synthesis applications. Next, polydimethyl siloxane and glass devices are presented as the primary microfluidic devices for Synthesis from photocrosslinkable materials. Then, the review discusses three types of polymeric Particles: spherical, spheroidal and Janus. Subsequently, composite Particles and metal or metal oxide Particles are discussed. The review closes with a discussion of Particle throughput and the outlook for the field of Particle Synthesis from photocrosslinkable materials. © 2014 Springer-Verlag Berlin Heidelberg.
Steve Granick - One of the best experts on this subject based on the ideXlab platform.
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janus Particle Synthesis assembly and application
Langmuir, 2017Co-Authors: Jie Zhang, Bartosz A. Grzybowski, Steve GranickAbstract:Janus Particles are colloidal Particles with more than a single type of surface chemistry or composition, ranging in size from hundreds of nanometers to a few micrometers. Like traditional colloids, they are large enough to be observed under optical microscopy in real time and small enough to diffuse by Brownian motion, but their interesting and useful new properties of directional interaction bring new research opportunities to the fields of soft matter and fundamental materials research as well as to applications in other disciplines and in technologies such as electronic paper and other multiphase engineering. In this review, a variety of methods that have been used to synthesize Janus Particles are introduced. Following this, we summarize the use of Janus Particles as basic units that assemble into novel structures and tune important material properties. The concluding sections highlight some of the technological applications, including recent progress in using Janus Particles as microprobes, micromot...
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Janus Particle Synthesis, Assembly, and Application
Langmuir, 2017Co-Authors: Jie Zhang, Bartosz A. Grzybowski, Steve GranickAbstract:Janus Particles, colloid-sized Particles with two regions of different surface chemical composition, possess energetic interactions that depend not only on their separation but also on their orientation. Research on Janus and colloidal Particles that are chemically patchy in even more complicated fashion has opened a new chapter in the colloid research field. This article highlights recent progress in both experiment and theory regarding Synthesis and self-assembly of Janus Particles, and tentatively outlines some areas of future opportunity.
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janus Particle Synthesis and assembly
Advanced Materials, 2010Co-Authors: Shan Jiang, Qian Chen, Mukta Tripathy, Erik Luijten, Kenneth S Schweizer, Steve GranickAbstract:Janus Particles, colloid-sized Particles with two regions of different surface chemical composition, possess energetic interactions that depend not only on their separation but also on their orientation. Research on Janus and colloidal Particles that are chemically patchy in even more complicated fashion has opened a new chapter in the colloid research field. This article highlights recent progress in both experiment and theory regarding Synthesis and self-assembly of Janus Particles, and tentatively outlines some areas of future opportunity.
David Baah - One of the best experts on this subject based on the ideXlab platform.
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Microfluidics for Particle Synthesis from photocrosslinkable materials
Microfluidics and Nanofluidics, 2014Co-Authors: David Baah, Tamara Floyd-smithAbstract:This paper is a review of microfluidics for Particle Synthesis from photocrosslinkable materials. Microfluidics for Particle Synthesis is rapidly gaining attention as a viable method for the Synthesis of Particles with applications in drug delivery, security, abrasives, rheology, catalysis and other areas. Particle Synthesis can follow several schemes, but the focus of this review is Particle Synthesis from photocrosslinkable materials. In these systems, solid Particles are formed by the light-initiated cross-linking of precursor materials. This review begins with a discussion of photocrosslinkable materials, typically synthetic hydrogels for Particle Synthesis applications. Next, polydimethyl siloxane and glass devices are presented as the primary microfluidic devices for Synthesis from photocrosslinkable materials. Then, the review discusses three types of polymeric Particles: spherical, spheroidal and Janus. Subsequently, composite Particles and metal or metal oxide Particles are discussed. The review closes with a discussion of Particle throughput and the outlook for the field of Particle Synthesis from photocrosslinkable materials.
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Microfluidics for Particle Synthesis from photocrosslinkable materials
Microfluidics and Nanofluidics, 2014Co-Authors: David Baah, Tamara Floyd-smithAbstract:This paper is a review of microfluidics for Particle Synthesis from photocrosslinkable materials. Microfluidics for Particle Synthesis is rapidly gaining attention as a viable method for the Synthesis of Particles with applications in drug delivery, security, abrasives, rheology, catalysis and other areas. Particle Synthesis can follow several schemes, but the focus of this review is Particle Synthesis from photocrosslinkable materials. In these systems, solid Particles are formed by the light-initiated cross-linking of precursor materials. This review begins with a discussion of photocrosslinkable materials, typically synthetic hydrogels for Particle Synthesis applications. Next, polydimethyl siloxane and glass devices are presented as the primary microfluidic devices for Synthesis from photocrosslinkable materials. Then, the review discusses three types of polymeric Particles: spherical, spheroidal and Janus. Subsequently, composite Particles and metal or metal oxide Particles are discussed. The review closes with a discussion of Particle throughput and the outlook for the field of Particle Synthesis from photocrosslinkable materials. © 2014 Springer-Verlag Berlin Heidelberg.
Orlin D Velev - One of the best experts on this subject based on the ideXlab platform.
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Anisotropic Particle Synthesis inside droplet templates on superhydrophobic surfaces.
Macromolecular Rapid Communications, 2009Co-Authors: Vinayak Rastogi, Antonio A. Garcia, Manuel Marquez, Orlin D VelevAbstract:We demonstrate how droplet templates dispensed on superhydrophobic substrates can be used to fabricate both shape-anisotropic ("doughnut") and composition-anisotropic ("patchy magnetic") supraParticles. The macroscopic shape of the closely-packed Particle assemblies is guided by the droplet meniscus. Aqueous droplets of monodisperse microsphere suspensions dispensed on the substrates initially acquire near-spherical shape due to a high contact angle. During the solvent evaporation, however, silica suspension droplets undergo shape transitions (concaving) guiding the structure of the final assemblies into doughnut supraParticles. Composition anisotropy is achieved by drying a droplet containing a mixed suspension of latex and magnetic nanoParticles, while exposing it to magnetic field gradients. Depending on the pattern of the magnetic fields, the magnetic nanoParticles segregate into single, bilateral, or trilateral, patched spherical supraParticles. The physical effects leading to the development of anisotropy are discussed. Unlike the conventional wet self-assembly (WSA) methods where the final structures need to be extracted from the liquid environment, this efficient one-step procedure produces ready to use "dry" supraParticles.
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anisotropic Particle Synthesis in dielectrophoretically controlled microdroplet reactors
Nature Materials, 2004Co-Authors: Jeffrey R Millman, Ketan H Bhatt, Brian G Prevo, Orlin D VelevAbstract:The miniaturization of chemical and biological processes in microfluidic devices and bioarrays is a major technological achievement. Microchips performing multiphase material Synthesis operations could be a future step in this trend of miniaturizing technology. Here we show how electrically controlled chips can be used for the Synthesis and manipulation of new types of Particles with advanced structure. The method is based on a technique that allows freely suspended droplets and Particles to be entrapped and transported using electric fields. The fields that hold and guide the droplets and Particles are applied through arrays of electrodes submerged in the oil. Each of the microdroplets suspended on the surface of fluorinated liquid serves as a microscopic reactor, where the Particles are formed by solidification of the carrier droplets. Controlled on-chip assembly, drying, encapsulation and polymerization were used to make anisotropic 'eyeball' and striped Particles, polymer capsules and semiconducting microbeads.
Jie Zhang - One of the best experts on this subject based on the ideXlab platform.
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janus Particle Synthesis assembly and application
Langmuir, 2017Co-Authors: Jie Zhang, Bartosz A. Grzybowski, Steve GranickAbstract:Janus Particles are colloidal Particles with more than a single type of surface chemistry or composition, ranging in size from hundreds of nanometers to a few micrometers. Like traditional colloids, they are large enough to be observed under optical microscopy in real time and small enough to diffuse by Brownian motion, but their interesting and useful new properties of directional interaction bring new research opportunities to the fields of soft matter and fundamental materials research as well as to applications in other disciplines and in technologies such as electronic paper and other multiphase engineering. In this review, a variety of methods that have been used to synthesize Janus Particles are introduced. Following this, we summarize the use of Janus Particles as basic units that assemble into novel structures and tune important material properties. The concluding sections highlight some of the technological applications, including recent progress in using Janus Particles as microprobes, micromot...
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Janus Particle Synthesis, Assembly, and Application
Langmuir, 2017Co-Authors: Jie Zhang, Bartosz A. Grzybowski, Steve GranickAbstract:Janus Particles, colloid-sized Particles with two regions of different surface chemical composition, possess energetic interactions that depend not only on their separation but also on their orientation. Research on Janus and colloidal Particles that are chemically patchy in even more complicated fashion has opened a new chapter in the colloid research field. This article highlights recent progress in both experiment and theory regarding Synthesis and self-assembly of Janus Particles, and tentatively outlines some areas of future opportunity.