High coupling phononic SH-SAW resonators for inliquid operation
Paper i 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.

Phononic

SAW

Bio-sensors

Liquid sensing

Författare

Ventsislav Yantchev

Chalmers, Kemi och kemiteknik, Kemi och biokemi, Fysikalisk kemi

Aldo Jesorka

Chalmers, Kemi och kemiteknik, Kemi och biokemi, Fysikalisk kemi

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-

Ämneskategorier

Fysikalisk kemi

DOI

10.1109/EFTF.2016.7477817

ISBN

978-150900720-2