Textured-surface quartz resonator fluid density and viscosity mo

Details Textured-surface quartz resonator fluid density and viscosity mo Textured-surface quartz resonator fluid density and viscosity mo

1997-04-25

1998-08-25

Oda, Christine K.

Measuring and testing

Specific gravity or density of liquid or solid

G01N 900

Patent

active

057984522

ABSTRACT:
A pair of thickness-shear mode resonators, one smooth and one with a textured surface, allows fluid density and viscosity to be independently resolved. A textured surface, either randomly rough or regularly patterned, leads to trapping of liquid at the device surface. The synchronous motion of this trapped liquid with the oscillating device surface allows the device to weigh the liquid; this leads to an additional response that depends on liquid density. This additional response enables a pair of devices, one smooth and one textured, to independently resolve liquid density and viscosity; the difference in responses determines the density while the smooth device determines the density-viscosity product, and thus, the pair determines both density and viscosity.

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