Simulation of a surface-transverse wave (STW) biosensor for DF-1 cells

• Main Authors: Nordin, Anis Nurashikin, Jamil, Nadira, Mel, Maizirwan, Voiculescu, Ioana, Ibrahimy, Muhammad Ibn
• Format: Conference or Workshop Item
• Language: English
• Published: 2010
• Subjects: TK Electrical engineering. Electronics Nuclear engineering
• Online Access: http://irep.iium.edu.my/23127/1/p33.pdf; http://irep.iium.edu.my/23127/; http://www.iium.edu.my/irie/10/sub10/author/list_p.php

A 250 MHz Surface-Transverse Wave (STW) resonator is employed as a sensor element for the detection of DF-1 cells. STW belongs to the shear-horizontal acoustic plate modes (SH-APM) waves’ family where it has attracted plenty considerable interest. STWs are horizontally polarized shear waves which are generated and detected by the interdigital transducers (IDTs) similar to surface-acoustic wave (SAW) resonators [1]. Detection of chemical and biological agents in aqueous solutions is a difficult problem, especially when the detection technique has to be sensitive, power-efficient and very handy. Acoustic plate mode is a mode of vibration where particle motion is parallel to the surface. This makes it possible to produce a sensitive sensor capable of operating in fluids [2]. This paper presents the biosensor prototype utilizing STW resonator.