10 papers · 1 filter
Phase-separation of miscible liquids in a centrifuge
Yoav Tsori, Ludwik Leibler
We show that a liquid mixture in the thermodynamically stable homogeneous phase can undergo a phase-separation transition when rotated at sufficiently high frequency . This phas…
Discontinuous Meniscus Location in Tapered Capillaries Driven by Pressure Difference and Dielectrophoretic Forces
Yoav Tsori
We calculate the meniscus location in tapered capillaries under the influence of pressure difference and dielectrophoretic forces with and without gravity. We find that the meniscu…
Phase-separation in ion-containing mixtures in electric fields
Yoav Tsori, Ludwik Leibler
When a liquid mixture is subjected to external electric fields, ionic screening leads to field gradients. We point out that if the mixture is initially in the homogeneous phase, th…
Discontinuous liquid rise in capillaries with nonuniform cross-sections
Yoav Tsori
We consider theoretically liquid rise against gravity in capillaries with height-dependent cross-section. For a conical capillary made from a hydrophobic surface and dipped in a li…
Damping of acoustic waves in dilute polymer solutions
Yoav Tsori, Pierre-Gilles de Gennes
The shear viscosity eta_s(w) of dilute polymer solutions (of flexible coils) has been classically measured and interpreted in terms of the Zimm modes. We point out that the longitu…
Frustrated Rotations in Nematic Monolayers
Y. Tsori, P. -G. de Gennes
Tabe and Yokoyama found recently that the optical axis in a chiral monolayer of a ferronematic rotates when water evaporates from the bath: the chiral molecules act as propellers.…