Tel Aviv University

Tel Aviv University
Condensed Matter Theory Seminar

Academic Year  2003 - 2004

The seminar is held in Room 204 in the Shenkar Physics Building, every Monday at 16:00


November 24, 2003

"Can electric fields induce a phase transition in simple fluids?"

Dr. Yoav Tsori
Dept. of Condensed Matter Physics, College de France

     The effect of electric fields on the phase diagram of binary fluid mixtures has been the subject of intense research in the past 50 years. Starting from Debye and Landau & Lifshitz, experiments and theory have shown that electric fields can change the critical temperature of a mixture. However, the change to Tc is so small (about 0.01 degree) that there has been disagreement even about its sign. Here we show theoretically and demonstrate experimentally that non uniform electric fields can induce a phase transition in a liquid mixture of two non-polar fluids under practical conditions. The effect is huge and occurs at 1 degree or even more above the transition temperature. Possible applications are in microfluidics, light scattering and guiding, eraseable writing, controlled chemical reactions and electro-rheological devices.  

Host: Prof. David Andelman, x7239
Fall 2003 Schedule Spring 2004 Schedule

For more information or for directions to 204 Shenkar please contact: Chava Belson  03-6408300

To suggest potential speakers or register feedback contact:  Ron Lifshitz  03-6405145

Sponsored by:   The Condensed Matter Physics Department, The School of Physics & Astronomy, Tel Aviv University.