Sun, 27 Jul 2008 07:57:14 BST CiteULike: dchen's Hsu http://www.citeulike.org/user/dchen/author/Hsu CiteULike.org en-gb Copyright © 2004-2008 citeulike.org http://www.citeulike.org/user/dchen/article/1210848 <i>Science, Vol. 298, No. 5595. (1 November 2002), pp. 1006-1009.</i><br /><br />10.1126/science.1074868 Colloidosomes: Selectively Permeable Capsules Composed of Colloidal Particles AD Dinsmore Ming Hsu MG Nikolaides Manuel Marquez AR Bausch DA Weitz doi:10.1126/science.1074868 Science, Vol. 298, No. 5595. (1 November 2002), pp. 1006-1009. 2007-04-05T12:51:02-00:00 2002 Science 298 5595 1006 1009 colloidosome dinsmore emulsion science http://www.citeulike.org/user/dchen/article/2714497 <i>Science, Vol. 299, No. 5613. (14 March 2003), pp. 1716-1718.</i><br /><br />10.1126/science.1081160 Grain Boundary Scars and Spherical Crystallography AR Bausch MJ Bowick A Cacciuto AD Dinsmore MF Hsu DR Nelson MG Nikolaides A Travesset DA Weitz doi:10.1126/science.1081160 Science, Vol. 299, No. 5613. (14 March 2003), pp. 1716-1718. 2008-04-24T22:18:23-00:00 2003 Science 299 5613 1716 1718 2d crystal surface weitz http://www.citeulike.org/user/dchen/article/2714010 <i>Nature, Vol. 420, No. 6913. (21 November 2002), pp. 299-301.</i> Electric-field-induced capillary attraction between like-charged particles at liquid interfaces MG Nikolaides AR Bausch MF Hsu AD Dinsmore MP Brenner C Gay DA Weitz doi:10.1038/nature01113 Nature, Vol. 420, No. 6913. (21 November 2002), pp. 299-301. 2008-04-24T19:25:39-00:00 2002 Nature 420 6913 299 301 colloids interaction interface nature weitz http://www.citeulike.org/user/dchen/article/2713987 <i>Nature, Vol. 424, No. 6952. (2003), pp. 1014-1014.</i> Capillary attraction (communication arising): Like-charged particles at liquid interfaces MG Nikolaides AR Bausch MF Hsu AD Dinsmore MP Brenner C Gay DA Weitz doi:10.1038/4241014b Nature, Vol. 424, No. 6952. (2003), pp. 1014-1014. 2008-04-24T19:16:11-00:00 2003 Nature 424 6952 1014 1014 interaction interface microrheology nature weitz http://www.citeulike.org/user/dchen/article/2710276 <i>Langmuir, Vol. 21, No. 7. (29 March 2005), pp. 2963-2970.</i><br /><br />Abstract: We construct shells with tunable morphology and mechanical response with colloidal particles that self-assemble at the interface of emulsion droplets. Particles self-assemble to minimize the total interfacial energy, spontaneously forming a particle layer that encapsulates the droplets. We stabilize these layers to form solid shells at the droplet interface by aggregating the particles, connecting the particles with adsorbed polymer, or fusing the particles. These techniques reproducibly yield shells with controllable properties such as elastic moduli and breaking forces. To enable diffusive exchange through the particle shells, we transfer them into solvents that are miscible with the encapsulant. We characterize the mechanical properties of the shells by measuring the response to deformation by calibrated microcantilevers. Self-assembled Shells Composed of Colloidal Particles: Fabrication and Characterization MF Hsu MG Nikolaides AD Dinsmore AR Bausch VD Gordon X Chen JW Hutchinson DA Weitz M Marquez doi:10.1021/la0472394 Langmuir, Vol. 21, No. 7. (29 March 2005), pp. 2963-2970. 2008-04-23T21:31:14-00:00 2005 Langmuir 21 7 2963 2970 colloids dinsmore emulsion technique weitz http://www.citeulike.org/user/dchen/article/2710262 <i>Langmuir, Vol. 21, No. 11. (24 May 2005), pp. 4881-4887.</i><br /><br />Abstract: While the important role of electrostatic interactions in aqueous colloidal suspensions is widely known and reasonably well-understood, their relevance to nonpolar suspensions remains mysterious. We measure the interaction potentials of colloidal particles in a nonpolar solvent with reverse micelles. We find surprisingly strong electrostatic interactions characterized by surface potentials, e, from 2.0 to 4.4 kBT and screening lengths, -1, from 0.2 to 1.4 m. Interactions depend on the concentration of reverse micelles and the degree of confinement. Furthermore, when the particles are weakly confined, the values of e and extracted from interaction measurements are consistent with bulk measurements of conductivity and electrophoretic mobility. A simple thermodynamic model, relating the structure of the micelles to the equilibrium ionic strength, is in good agreement with both conductivity and interaction measurements. Since dissociated ions are solubilized by reverse micelles, the entropic incentive to charge a particle surface is qualitatively changed from aqueous systems, and surface entropy plays an important role. Charge Stabilization in Nonpolar Solvents MF Hsu ER Dufresne DA Weitz doi:10.1021/la046751m Langmuir, Vol. 21, No. 11. (24 May 2005), pp. 4881-4887. 2008-04-23T21:21:25-00:00 2005 Langmuir 21 11 4881 4887 micelle weitz