Results 171 to 180 of about 40,497 (195)
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Angewandte Chemie International Edition, 2009
AbstractSince de Gennes’ Nobel lecture in 1991, in which he coined the term “Janus grains”, research into asymmetric particles has boomed. Macroscopic, microscopic and nanoscopic particles have been prepared in which certain parts of their surface differ in chemical composition, polarity, color, or any other property. Spherical, cylindrical, disc‐like,
Frederik R. Wurm +1 more
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AbstractSince de Gennes’ Nobel lecture in 1991, in which he coined the term “Janus grains”, research into asymmetric particles has boomed. Macroscopic, microscopic and nanoscopic particles have been prepared in which certain parts of their surface differ in chemical composition, polarity, color, or any other property. Spherical, cylindrical, disc‐like,
Frederik R. Wurm +1 more
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Janus and Multiblock Colloidal Particles
Langmuir, 2012We review recent developments in the synthesis and self-assembly of Janus and multiblock colloidal particles, highlighting new opportunities for colloid science and technology that are enabled by encoding orientational order between particles as they self-assemble.
Chen, Qian +4 more
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Selective encapsulation by Janus particles
The Journal of Chemical Physics, 2015We employ Monte Carlo simulation to examine encapsulation in a system comprising Janus oblate spheroids and isotropic spheres. More specifically, the impact of variations in temperature, particle size, inter-particle interaction range, and strength is examined for a system in which the spheroids act as the encapsulating agents and the spheres as the ...
Wei Li +3 more
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Luminescent elastomeric Janus particles
Journal of Colloid and Interface Science, 2013We report on a low-cost and low-tech method for the preparation of luminescent micro- and millimeter elastomeric particles with asymmetric morphology. The method of fabrication consists in UV-irradiating soft urethane/urea fluorescent spheres, which are then extracted in toluene and dried.
Ivan H. Bechtold +3 more
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Janus Particles in a Nonpolar Solvent
Langmuir, 2016Amphiphilic Janus particles are currently receiving great attention as "solid surfactants". Previous studies have introduced such particles with a variety of shapes and functions, but there has so far been a strong emphasis on water-dispersible particles that mimic the molecular surfactants soluble in polar solvents.
Dennis C. Prieve +3 more
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Janus Particle Synthesis and Assembly
Advanced Materials, 2010AbstractJanus 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 ...
Jiang, Shan +5 more
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Multifunctional Superparamagnetic Janus Particles
Langmuir, 2009In this study, we report the microfluidic-based synthesis of a multifunctional Janus hydrogel particle with anisotropic superparamagnetic properties and chemical composition for the bottom-up assembly of hydrogel superstructures. In a uniform magnetic field, the resulting Janus magnetic particles fabricated in the present method exhibit chainlike or ...
Ramin Haghgooie +3 more
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Synthesis of Biofunctional Janus Particles
Macromolecular Rapid Communications, 2015Janus particles with anisotropic biofunctionalities are perfect models to mimic anisotropic architectures and directional interactions that occur in nature. It is therefore highly desirable to develop reliable and efficient methods to synthesize biofunctional Janus particles.
Zhifeng Cheng +5 more
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Physics Today, 2009
What if one could see under a microscope how molecules fit together? Tiny Janus spheres, whose chemical makeup differs between two sides, represent an exciting step in that direction.
Granick, Steve, Jiang, Shan, Chen, Qian
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What if one could see under a microscope how molecules fit together? Tiny Janus spheres, whose chemical makeup differs between two sides, represent an exciting step in that direction.
Granick, Steve, Jiang, Shan, Chen, Qian
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Morphing Metal–Polymer Janus Particles
Advanced Materials, 2013The direct deformation and shape recovery of micron-sized polystyrene particles via nanoimprint lithography is reported. The recovery of the programmed PS particles can be utilized to create a range of smart Janus particles with contrasting properties in conductivity and topography, by use of metal-layer constrained recovery.
Cox, Lewis M +6 more
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