Measuring and testing – Vibration – Resonance – frequency – or amplitude study
Reexamination Certificate
2007-01-09
2007-01-09
Williams, Hezron (Department: 2856)
Measuring and testing
Vibration
Resonance, frequency, or amplitude study
C073S054010, C073S590000
Reexamination Certificate
active
10481685
ABSTRACT:
A piezoelectric crystal element and a sensor utilizing the same are presented for use in a sensor device for identifying at least one foreign material from environment. The crystal element comprises at least one crystal resonator in the form of an inverted mesa structure, which has a membrane-like region and has a certain resonance frequency value. A surface region of the crystal resonator is modified by reactive molecules of a kind capable of interacting with the foreign material to yield a reaction product that effects a change in the resonance frequency of the crystal resonator from said certain resonance frequency value. This change is indicative of the identity and quantity of the foreign material.
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Dayagi Yohai Y.
Dayan Lev
Shalom Moshe
Greer Burns & Crain Ltd
M.S. Tech Ltd.
Saint Surin Jacques
Williams Hezron
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