QCM sensor and QCM sensor device

Details QCM sensor and QCM sensor device QCM sensor and QCM sensor device

2006-05-02

2006-05-02

Kwok, Helen (Department: 2856)

Measuring and testing

Vibration

Resonance, frequency, or amplitude study

C073S024060, C073S064530, C073S061750, C073S061790

Reexamination Certificate

active

07036375

ABSTRACT:
A plurality of quartz crystal resonators having different resonance frequencies are connected in parallel. A combined admittance of the resonators is measured. Equivalent circuit constants of all the resonators are obtained by a method of least squares from admittance characteristics. A change in the resonance frequency is measured and mass of a substance adsorbed to a piezoelectric transducer is calculated.

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patent: 6544478 (2003-04-01), Oyama et al.
patent: 6819203 (2004-11-01), Taniguchi
patent: 2005/0016276 (2005-01-01), Guan et al.
patent: 2000-338022 (2000-12-01), None
Acoustic Wave Sensors by Academic Press, 1997 (ISBM 0-12-077460-7) pp. 918-929.
Bunseki Kagaku The Japan Society for Analytical Chemistry 1997, No. 12, vol. 46, p. 917-930.

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