Relaxation time of confined liquids under shear
- 27 May 1991
- journal article
- research article
- Published by American Physical Society (APS) in Physical Review Letters
- Vol. 66 (21), 2758-2761
- https://doi.org/10.1103/physrevlett.66.2758
Abstract
Ultrathin films of simple nonpolar molecular fluids (3–8 segmental dimensions thick) show a strikingly long relaxation time in response to oscillatory shear when confined between mica plates at 27 °C. When the shear rate exceeds this inverse time, the effective viscosity decays as an apparent power law in the shear rate, implying considerable distortion of the dynamic structure. The relaxation time is orders of magnitude longer than the Brownian relaxation time in the bulk state and may reflect collective motions induced by confinement.This publication has 21 references indexed in Scilit:
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