An Electric Bottle for Colloids

by: MT Sullivan, K Zhao, AD Hollingsworth, RH Austin, WB Russel, PM Chaikin

Physical Review Letters, Vol. 96, No. 1. (2006)

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Abstract

Particle concentration is a dominant control parameter for colloids and other soft matter systems. We demonstrate a simple technique, "dielectrophoretic equilibrium," implemented as an "electric bottle," a planar capacitor in a larger volume. The uniform E field in the capacitor traps particles in this force-free region at a higher density than in the zero field regions outside. We show how the technique measures the equation of state and we initiate and grow colloidal crystals. "Dielectrophoretic equilibria" enable the study of a complete concentration-dependent phase diagram from a single microscopic sample, obviating the previous need for preparing a large number of samples.

@article{citeulike:2651302, abstract = {Particle concentration is a dominant control parameter for colloids and other soft matter systems. We demonstrate a simple technique, \"dielectrophoretic equilibrium,\" implemented as an \"electric bottle,\" a planar capacitor in a larger volume. The uniform E field in the capacitor traps particles in this force-free region at a higher density than in the zero field regions outside. We show how the technique measures the equation of state and we initiate and grow colloidal crystals. \"Dielectrophoretic equilibria\" enable the study of a complete concentration-dependent phase diagram from a single microscopic sample, obviating the previous need for preparing a large number of samples.}, author = {Sullivan, M. T. and Zhao, K. and Hollingsworth, A. D. and Austin, R. H. and Russel, W. B. and Chaikin, P. M. }, citeulike-article-id = {2651302}, doi = {http://dx.doi.org/10.1103/PhysRevLett.96.015703}, journal = {Physical Review Letters}, keywords = {colloidal, structure}, number = {1}, posted-at = {2008-04-11 02:04:41}, priority = {2}, publisher = {APS}, title = {An Electric Bottle for Colloids}, url = {http://dx.doi.org/10.1103/PhysRevLett.96.015703}, volume = {96}, year = {2006} }

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TY - JOUR ID - citeulike:2651302 L3 - citeulike-article-id:2651302 TI - An Electric Bottle for Colloids JF - Physical Review Letters VL - 96 IS - 1 PB - APS N2 - Particle concentration is a dominant control parameter for colloids and other soft matter systems. We demonstrate a simple technique, "dielectrophoretic equilibrium," implemented as an "electric bottle," a planar capacitor in a larger volume. The uniform E field in the capacitor traps particles in this force-free region at a higher density than in the zero field regions outside. We show how the technique measures the equation of state and we initiate and grow colloidal crystals. "Dielectrophoretic equilibria" enable the study of a complete concentration-dependent phase diagram from a single microscopic sample, obviating the previous need for preparing a large number of samples. KW - colloidal KW - structure AU - Sullivan, MT AU - Zhao, K AU - Hollingsworth, AD AU - Austin, RH AU - Russel, WB AU - Chaikin, PM PY - 2006/// UR - http://dx.doi.org/10.1103/PhysRevLett.96.015703 ER -

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