High coupling phononic SH-SAW resonators for inliquid operation
Paper in proceeding, 2016

In this communication we report on initial studies on the in-liquid operation of surface acoustic wave (SAW) phononic resonators employing shear (SH)-SAWs. The mode of operation is a SH-SAW with very high electromechanical coupling, propagating in the X-direction of Y-cut LiNbO3 substrates. Measurements of the resonators immersed in ethylene glycol - water mixtures are presented along with an analysis of the underlying phenomena that determine device sensitivity. We found that the change of electromechanical coupling due to variations in the dielectric permittivity of the liquid becomes a leading contributing factor to device sensitivity. The results of this study are expected to enable the design of a novel class of phononic bio-sensors for lab-on-a-chip applications.

SAW

Phononic

Liquid sensing

Bio-sensors

Author

Ventsislav Mitkov Yanchev

Chalmers, Chemistry and Chemical Engineering, Chemistry and Biochemistry

Aldo Jesorka

Chalmers, Chemistry and Chemical Engineering, Chemistry and Biochemistry

T. Mirea

Escuela Tecnica Superior de Ingenieros de Telecomunicacion, Madrid

E. Iborra

Escuela Tecnica Superior de Ingenieros de Telecomunicacion, Madrid

30th European Frequency and Time Forum, EFTF 2016, University of YorkUnited Kingdom, 4-7 April 2016

Art. no. 7477817-
978-150900720-2 (ISBN)

Subject Categories

Physical Chemistry

DOI

10.1109/EFTF.2016.7477817

ISBN

978-150900720-2

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