Contact angle-based predictive model for slip at the solid–liquid interface of a transverse-shear mode acoustic wave device

We have revisited the Blake–Tolstoi theory [Coll. Surf. 47, 135 (1990)] for molecular and hydrodynamic slip and applied it to the fundamental description of acoustic wave devices coupled to a liquid of finite thickness. The aim is to provide a framework for a predictive model for slip, based on surf...

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Veröffentlicht in:Journal of applied physics 2003-11, Vol.94 (9), p.6201-6207
Hauptverfasser: Ellis, Jonathan S., McHale, Glen, Hayward, Gordon L., Thompson, Michael
Format: Artikel
Sprache:eng
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Zusammenfassung:We have revisited the Blake–Tolstoi theory [Coll. Surf. 47, 135 (1990)] for molecular and hydrodynamic slip and applied it to the fundamental description of acoustic wave devices coupled to a liquid of finite thickness. The aim is to provide a framework for a predictive model for slip, based on surface–liquid interactions and contact angle. This theory provides a description of slip that links hydrodynamic boundary slip to a schematic, molecular description involving the wettability of the liquid–solid interface. We redevelop the model, using current acoustic sensors notation, then evaluate its qualitative behavior as a predictive model for slip length in the context of acoustic wave devices. Finally, we discuss the limitations of the model and consider the advantages of a predictive model for boundary slip.
ISSN:0021-8979
1089-7550
DOI:10.1063/1.1619195