Phys. Rev. Lett. 66, 2758–2761 (1991)Relaxation time of confined liquids under shearReceived 1 March 1991; published in the issue dated 27 May 1991 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. © 1991 The American Physical Society URL:
http://link.aps.org/doi/10.1103/PhysRevLett.66.2758
DOI:
10.1103/PhysRevLett.66.2758
PACS:
68.45.-v, 47.25.Ei, 62.20.-x, 82.65.Dp
|
|
About | Terms and Conditions | Subscriptions | Search | Help
Use of the American Physical Society websites and journals implies that the user has read and agrees to our Terms and Conditions and any applicable Subscription Agreement. Physical Review®, Physical Review Letters®, Reviews of Modern Physics®, and Physical Review Special Topics® are trademarks of the American Physical Society.