EFFECT OF THE GENERATION OF COMPRESSIONAL WAVES ON THE RESPONSE OF THE THICKNESS-SHEAR MODE ACOUSTIC-WAVE SENSOR IN LIQUIDS

Authors
TESSIER L PATAT F SCHMITT N FEUILLARD G THOMPSON M
Citation
L. Tessier et al., EFFECT OF THE GENERATION OF COMPRESSIONAL WAVES ON THE RESPONSE OF THE THICKNESS-SHEAR MODE ACOUSTIC-WAVE SENSOR IN LIQUIDS, Analytical chemistry, 66(21), 1994, pp. 3569-3574
Citations number
32
Categorie Soggetti
Chemistry Analytical
Journal title
Analytical chemistry → ACNP
ISSN journal
00032700
Volume
66
Issue
21
Year of publication
1994
Pages
3569 - 3574
Database
ISI
SICI code
0003-2700(1994)66:21<3569:EOTGOC>2.0.ZU;2-W
Abstract
The operation of a thickness-shear mode quartz oscillating with a liqu id on one of its faces has been analyzed in terms of the complex acous tic impedance of the liquid load. Precise measurements put clearly in evidence that two additional impedances have to be added to the simple viscous loading: (1) a pure imaginary term corresponding to the nonvi scous coupling caused by surface roughness effects; (2) a complex term that shows periodic changes with temperature and is interpreted as an effect of the generation of a standing compressional wave inside the cell cavity.