EXPERIMENTAL-OBSERVATION OF INTERFACIAL SLIPPAGE AT THE BOUNDARY OF MOLECULARLY THIN-FILMS WITH GOLD SUBSTRATES

被引:149
作者
WATTS, ET
KRIM, J
WIDOM, A
机构
[1] Department of Physics, Northeastern University, Boston
来源
PHYSICAL REVIEW B | 1990年 / 41卷 / 06期
关键词
D O I
10.1103/PhysRevB.41.3466
中图分类号
T [工业技术];
学科分类号
08 ;
摘要
Physisorbed monolayers and multilayers adsorbed on the surface electrodes of a resonating quartz microbalance produce shifts in both the frequency and amplitude of the oscillator. The shift in frequency results from mass loading and the shift in amplitude results from film dissipation effects. We have measured these shifts for molecularly thin nitrogen and krypton films and observe levels of film dissipation which cannot be adequately accounted for within the context of the no-slip boundary condition of hydrodynamics. The data provide strong evidence that the excess dissipation arises from slippage at the film substrate interface since the film thicknesses studied are negligible compared to the viscous penetration depths of the respective materials. © 1990 The American Physical Society.
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页码:3466 / 3472
页数:7
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