The Bleustein-Gulyaev wave for liquid sensing applications

Citation
C. Zhang et al., The Bleustein-Gulyaev wave for liquid sensing applications, SENS ACTU-B, 76(1-3), 2001, pp. 64-68
Citations number
40
Language
INGLESE
art.tipo
Article
Categorie Soggetti
Spectroscopy /Instrumentation/Analytical Sciences","Instrumentation & Measurement
Journal title
SENSORS AND ACTUATORS B-CHEMICAL
ISSN journal
0925-4005 → ACNP
Volume
76
Issue
1-3
Year of publication
2001
Pages
64 - 68
Database
ISI
SICI code
0925-4005(20010601)76:1-3<64:TBWFLS>2.0.ZU;2-4
Abstract
Crystallographic orientations in piezoelectric materials which support the Bleustein-Gulyaev (BG) wave are shown to offer sensor designers candidate s ensor platforms for liquid phase sensing applications. This wave, which occ urs in the family of Z-axis cylinder cuts in piezoelectric materials belong ing to the orthorhombic mm2 crystal group, has displacements in the surface plane perpendicular to the propagation direction and an electric field in the sagittal plane. This wave offers the advantage of not radiating a compr essional wave when loaded with a liquid. Theoretical calculations for the v elocity and the associated mechanical and electric fields have been perform ed for potassium niobate (KNbO3), a candidate mm2 group crystal, which show that this material offers many promising orientations for liquid phase aco ustic wave sensors. (C) 2001 Elsevier Science B.V. All rights reserved.