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DY: Dynamik und Statistische Physik

DY 46: Poster

DY 46.45: Poster

Thursday, March 27, 2003, 15:30–18:00, P1

Colloidal Crystals in Electric Fields — •Ana Barreira Fontecha, Hans Joachim Schöpe, and Thomas Palberg — Institut für Physik, Universität Mainz, Staudingerweg 7, 55099 Mainz

We studied the behaviour of charged colloidal model suspensions under the influence of a homogeneous electrostatic field. At equilibrium our suspensions are crystalline witch bcc-structure, if the concentration of electrolyte is kept sufficiently low. We report on the compression of such colloidal crystals as observed by simultaneous measurement of the static structure factor and low frequency conductivity.