Sun, 27 Jul 2008 07:40:34 BST CiteULike: dchen's Bausch http://www.citeulike.org/user/dchen/author/Bausch 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/2710303 <i>J. Am. Chem. Soc., Vol. 126, No. 43. (3 November 2004), pp. 14117-14122.</i><br /><br />Abstract: We fabricate and characterize capsules that are composite membranes, made of a polymer network stabilized by adsorption to colloids and inflated by osmotic pressure from internal free polyelectrolyte; here, poly-L-lysine forms the network and inflates the capsules. To assess these capsules' properties and structure, we deform capsules using microcantilevers and use finite element modeling to describe these deformations. Additional experimental tests confirm the model's validity. These capsules' resilient response to mechanical forces indicates that loading and shear should be good triggers for the release of contents via deformation. The osmotic pressure inflating these capsules has the potential to trigger release of contents via deflation in response to changes in the capsules' environment; we demonstrate addition of salt as a trigger for deflating capsules. Because these capsules have a variety of release triggers available and the technique used to fabricate them is very flexible and allows high encapsulation efficiency, these capsules have very high potential for application in many areas. Self-Assembled Polymer Membrane Capsules Inflated by Osmotic Pressure VD Gordon X Chen JW Hutchinson AR Bausch M Marquez DA Weitz doi:10.1021/ja0474749 J. Am. Chem. Soc., Vol. 126, No. 43. (3 November 2004), pp. 14117-14122. 2008-04-23T21:53:12-00:00 2004 J. Am. Chem. Soc. 126 43 14117 14122 emulsion technique 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/2264824 <i>Physical Review Letters, Vol. 96, No. 11. (2006)</i><br /><br />We exploit the power of microrheology to measure the viscoelasticity of entangled F-actin solutions at different length scales from 1 to 100 µm over a wide frequency range. We compare the behavior of single probe-particle motion to that of the correlated motion of two particles. By varying the average length of the filaments, we identify fluctuations that dissipate diffusively over the filament length. These provide an important relaxation mechanism of the elasticity between 0.1 and 30 rad/sec. Microrheology Probes Length Scale Dependent Rheology J Liu ML Gardel K Kroy E Frey BD Hoffman JC Crocker AR Bausch DA Weitz doi:10.1103/PhysRevLett.96.118104 Physical Review Letters, Vol. 96, No. 11. (2006) 2008-01-20T23:36:22-00:00 2006 Physical Review Letters 96 11 APS polymer semiflexiable weitz