Method and apparatus for characterizing materials by using a mechanical resonator
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United States of America Patent
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Jan 8, 2002
Grant Date -
Aug 2, 2001
app pub date -
Mar 7, 2001
filing date -
Oct 8, 1997
priority date (Note) -
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Abstract
A method and apparatus for measuring properties of a fluid composition includes a mechanical resonator connected to a measurement circuit. The measurement circuit provides a variable frequency input signal to the mechanical resonator, causing the mechanical resonator to oscillate. To test the properties of a liquid composition, the mechanical resonator is placed inside a sample well containing a small amount of the fluid. The input signal is then sent to the mechanical resonator and swept over a selected frequency range. The mechanical resonator's response over the frequency range depends on various characteristics of the fluid being tested, such as the temperature, viscosity, and other physical properties. The invention is particularly suitable for combinatorial chemistry applications, which require rapid analysis of chemical properties for screening.
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