Measuring and testing – Vibration – By mechanical waves
Reexamination Certificate
2005-06-10
2008-07-15
Williams, Hezron E. (Department: 2856)
Measuring and testing
Vibration
By mechanical waves
C073S579000, C073S054410, C073S061490, C073S061790
Reexamination Certificate
active
07398685
ABSTRACT:
A measuring method using a surface acoustic wave device, with which even in a case where a target substance having a different viscosity is added to a buffer liquid on the surface acoustic wave device it is possible to measure a mass load accurately without suffering an effect of this viscous load, and it is also possible to shorten the time taken for the temperature of the buffer liquid to stabilize and thereby shorten the time taken for the measurement. The measuring method provided is a method for exciting a surface acoustic wave on a substrate and measuring a property of a target substance placed on a detecting part on the substrate on the basis of a change in a characteristic of the surface acoustic wave, with the characterizing feature that a viscous load of the target substance is evaluated on the basis of fluctuations of at least two different frequencies among frequencies of the surface acoustic wave excited on the substrate, and a mass load of the target substance is measured by being separated from this viscous load.
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Ichihashi Motoko
Itoh Atsushi
Fayyaz Nashmiya S
Kratz Quintos & Hanson, LLP
Ulvac Inc.
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