Phononic crystal sensor

Author

Lucklum, Ralf

Author_Institution

Inst. for Micro & Sensor Syst. (IMOS), Otto-von-Guericke-Univ. Magdeburg, Magdeburg

fYear

2008

fDate

19-21 May 2008

Firstpage

85

Lastpage

90

Abstract

A new acoustic microsensor principle is introduced for the first time. It is based on acoustic band gap materials, so-called phononic crystals. The sensor employs features of the band gap to determine properties of one component that builds the phononic crystal. Here the dependence of the frequency of specific resonant modes within the band gap is correlated to liquid material properties. The sensitivity to variations in speed of sound and density of the liquid confined in a small gap has been found to be much higher than achievable with traditional ultrasonic measurements.

Keywords

acoustic materials; acoustic measurement; acoustic transducers; liquids; microsensors; phononic crystals; acoustic band gap materials; acoustic microsensor principle; liquid density; phononic crystal sensor; resonant modes; speed of sound; Acoustic materials; Acoustic sensors; Crystalline materials; Crystals; Material properties; Microsensors; Photonic band gap; Resonance; Resonant frequency; Sensor phenomena and characterization;

fLanguage

English

Publisher

ieee

Conference_Titel

Frequency Control Symposium, 2008 IEEE International

Conference_Location

Honolulu, HI

ISSN

1075-6787

Print_ISBN

978-1-4244-1794-0

Electronic_ISBN

1075-6787

Type

conf

DOI

10.1109/FREQ.2008.4622962

Filename

4622962