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

Jon Ellis, Glen McHale, Gordon Hayward, Michael Thompson

Research output: Contribution to journalArticlepeer-review

38 Citations (Scopus)

Abstract

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.
Original languageEnglish
Pages (from-to)6201-6207
JournalJournal of Applied Physics
Volume94
Issue number9
DOIs
Publication statusPublished - 1 Nov 2003

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