CiteULike: dchen Lin http://www.citeulike.org/user/dchen/author/Lin CiteULike.org en-gb Copyright © 2004-2008 citeulike.org http://www.citeulike.org/user/dchen/article/2581281 <i>Physical Review Letters, Vol. 100, No. 11. (2008)</i><br /><br />Fringing-field-induced phase separation dynamics in liquid-crystal–(LC-)monomer mixtures is investigated via a microscope. At a low LC concentration, the fringing field converts the randomly dispersed LC droplets to an ordered droplet array, while at a high LC concentration the fringing field converts the amorphous LC-monomer system to a composite film. Because the LC and monomer are immiscible, the converted morphologies are stable even after the voltage is removed. Using the fringing field-induced phase separation, it is possible to prepare different polymer-dispersed LC morphologies. In Situ Observation of Fringing-Field-Induced Phase Separation in a Liquid-Crystal--Monomer Mixture Hongwen Ren Shin Wu Yi Lin doi:10.1103/PhysRevLett.100.117801 Physical Review Letters, Vol. 100, No. 11. (2008) 2008-03-24T17:17:09-00:00 Physical Review Letters 100 11 APS 2008 cool liquidcrystal phase polymer http://www.citeulike.org/user/dchen/article/2735554 <i>Langmuir, Vol. 21, No. 1. (4 January 2005), pp. 191-194.</i><br /><br />Abstract: The self-assembly of nanoparticles at fluid interfaces, driven by the reduction in interfacial energy, was investigated. With spherical, tri-n-octyl-phosphine-oxide covered cadium selenide (CdSe) nanoparticles (1-8 nm), thermal fluctuations compete with the interfacial segregation giving rise to a size-dependent self-assembly of the particles. The structure of the nanoparticle assembly was studied using electron microscopy, atomic force microscopy, and X-ray scattering in situ, which indicate that the particles form a densely packed monolayer. The energetics of the adsorption of nanoparticles onto the interface was revealed by time-dependent fluorescence studies on a mixture of two different sized nanoparticles at the interface. The dynamics of the nanoparticles at the fluid interface, probed using fluorescence photobleaching methods, suggests a liquid-like behavior. The results have implications in the design of hierarchical self-assemblies of nanoparticles for the one-step fabrication of devices on multiple length scales. Nanoparticle Assembly at Fluid Interfaces: Structure and Dynamics Y Lin A Boker H Skaff D Cookson AD Dinsmore T Emrick TP Russell doi:10.1021/la048000q Langmuir, Vol. 21, No. 1. (4 January 2005), pp. 191-194. 2008-04-29T22:19:44-00:00 Langmuir 21 1 191 194 dinsmore emulsion interface nano