Inductively coupled sensing using a quartz crystal microbalance

Author

Wu, Wei ; Greve, David W. ; Oppenheim, Irving J.

Author_Institution

Dept. of Electr. & Comput. Eng., Carnegie Mellon Univ., Pittsburgh, PA

fYear

2008

fDate

2-5 Nov. 2008

Firstpage

1018

Lastpage

1021

Abstract

We report the application of a quartz crystal microbalance (QCM) in an inductively coupled measurement. Inductive coupling makes it possible to locate the sensing element in a hostile environment and to perform measurements without direct wired connections. We demonstrate inductively coupled sensing of methanol in nitrogen using a poly(ethyl methacrylate) adsorbing layer. The gas-related signal is easily detectable and is substantially larger than changes associated with thermal expansion of the apparatus.

Keywords

acoustic resonance; crystal resonators; gas sensors; inductive sensors; microbalances; organic compounds; quartz; direct wired connections; inductively coupled sensing; methanol; poly(ethyl methacrylate) adsorbing layer; quartz crystal microbalance; thermal expansion; Admittance; Coils; Coupling circuits; Frequency measurement; Methanol; Nitrogen; Polymer films; Resonant frequency; Ultrasonic variables measurement; Weight control; Inductively coupled; admittance; methanol vapor; polymer; quartz crystal microbalance;

fLanguage

English

Publisher

ieee

Conference_Titel

Ultrasonics Symposium, 2008. IUS 2008. IEEE

Conference_Location

Beijing

Print_ISBN

978-1-4244-2428-3

Electronic_ISBN

978-1-4244-2480-1

Type

conf

DOI

10.1109/ULTSYM.2008.0246

Filename

4803620