J. Phys. France
Volume 51, Numéro 19, octobre 1990
Page(s) 2143 - 2152
J. Phys. France 51, 2143-2152 (1990)
DOI: 10.1051/jphys:0199000510190214300

Dynamics of freely suspended films with surface tension

Yatin Marathe1 et Sriram Ramaswamy1, 2

1  Department of Physics, Indian Institute of Science, Bangalore 560 012, India
2  Centre for Theoretical Studies, Indian Institute of Science, Bangalore 560 012, India

We have studied the hydrodynamics of freely suspended membranes, liquid as well as crystalline, with surface tension. We find that nonlinear coupling to thermally excited undulations gives a singular contribution to the kinetic coefficients of these systems at low frequency and wavenumber. Our results differ in some important respects from those of Katz and Lebedev on this problem, and can be tested in mechanical impedance as well as time-correlation studies.

6815 - Liquid thin films.
6860B - Mechanical and acoustical properties.

Key words
elasticity -- hydrodynamics -- liquid films -- membranes -- surface tension