PIEZOELECTRIC UNIT, PIEZOELECTRIC DEVICE, PIEZOELECTRIC DETERMINATION DEVICE, AND STATE DETERMINATION METHOD

WIPO Patent Application WO/2014/002650

A1

A piezoelectric unit (1) is characterized by having a piezoelectric element for exciting a thickness-shear vibration, a first electrode provided to one side of the piezoelectric element, a second electrode and a third electrode electrically insulated from each other and provided to the reverse side of the piezoelectric element from the side to which the first electrode is provided, and a switch connected to the first electrode, the second electrode, and the third electrode, the switch being capable of switching between a mass/viscoelasticity measurement mode for measuring the mass or viscoelasticity of a substance in contact with the piezoelectric element by exciting the piezoelectric element, and an electrical characteristic measurement mode for measuring electrical characteristics between the second electrode and the third electrode.

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TANABE SACHIKO (JP)
SUDA MASAYUKI (JP)
MURAMATSU HIROSHI (JP)

PCT/JP2013/064110

January 03, 2014

May 21, 2013

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SEIKO INSTR INC (JP)

G01N5/02; G01N11/16; G01N19/00; G01N27/02

JPH06273304A	1994-09-30
JP2006522918A	2006-10-05
JPH08145867A	1996-06-07
JPH04310842A	1992-11-02
JPH04294245A	1992-10-19
JP2007515626A	2007-06-14

KUHARA, Kentaro et al. (JP)
Kentaro Kuhara (JP)

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