Shear Mode Resonators
Over the past eight years, Ktech's engineers and technicians have developed special expertise in the research, development, and design of sensors and sensors systems. Recently, Ktech personnel assisted Sandia National Laboratories and a multinational commercial company develop sensor systems using thickness shear mode (TSM) acoustic sensor technology.

TSM sensor technology allows fluid properties such as density, viscosity, and liquid-to-solid phase changes to be measured with greater accuracy and efficiency. Very subtle changes in mass deposition and viscoelastic character of deposited mass can also be determined. The TSM resonator is high sensitivity device, with a sensitivity greater than 5ng/cm2. The sensor is small and allows in-situ, real-time measurements. Sample sizes can be less than 1 cc.
Services Ktech Provides
- Sensor system electrical design
- Fabrication of sensor systems
- Characterization of sensor response
- Application of sensor systems to measurement problems in extreme environments
Specific Applications for TSM technology include
- Fuel oxidation measurement
- Aircraft wing ice detection
- Cleaning bath effectiveness
- Fluid viscosity/density monitoring
- Mass deposition
- Cloud point determination
- Electro deposition monitoring
- Biological sensors
- Dew point measurements
- Fluid pH measurement
- Film property measurement
- Detection of volatile organic compounds in water
For more information relating specifically to
Shear Mode Resonators, contact Jim Spates.