Measuring liquid properties with smooth- and textured-surface resonators
The sensitivity of quartz resonators to surface mass accumulation enables their use in a number of sensing applications. The linear change in resonant frequency that occurs with mass accumulation allows the device to function as a general-purpose gravimetric detector or ``microbalance.`` The device is easily instrumented as a sensor by incorporating it as the frequency-control element of an oscillator circuit. The response of thickness shear mode (TSM) resonators in liquids is examined. Smooth-surface devices, which viscously entrain a layer of contacting liquid, respond to the product of liquid density and viscosity. Textured-surface devices, which also trap liquid in surface features, exhibit an additional response that depends on liquid density alone. Combining smooth and textured resonators in a monolithic sensor allows simultaneous measurement of liquid density and viscosity.
- Research Organization:
- Sandia National Lab. (SNL-NM), Albuquerque, NM (United States)
- Sponsoring Organization:
- USDOE, Washington, DC (United States)
- DOE Contract Number:
- AC04-76DP00789; AC04-94AL85000
- OSTI ID:
- 139545
- Report Number(s):
- SAND-93-1565C; CONF-9306205-2; CONF-9406199-1; ON: DE93019433; TRN: AHC29312%%2
- Resource Relation:
- Conference: 1993 Institute of Electrical and Electronic Engineers (IEEE) frequency control symposium, Salt Lake City, UT (United States); Boston, MA (United States), 2-4 Jun 1993; 1-3 Jun 1994; Other Information: PBD: [1993]
- Country of Publication:
- United States
- Language:
- English
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