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Hydrogen fluoride (HF) is a hazardous compound used in a variety of industrial processes and is a decomposition product of many other fluorinated volatile organic compounds (VOCs), which are often environmental contaminants. Surface acoustic wave (SAW) resonators on quartz substrates are suited for HF sensing because the analyte can react directly with the sensor substrate to produce H2O and the volatile...
Traditionally, parameters for surface acoustic wave (SAW) scalar models have been determined either experimentally or by fitting dispersion expressions describing the models to numerically computed grating dispersion curves. Experimental parameter extraction is costly and labor intensive. The latter technique offers significant time and cost savings but normally yields frequency independent parameters,...
Acoustic wave reflection techniques are widely used in extracting the acoustic constants and temperature coefficients of anisotropic crystals. To obtain these constants with the desired precision, care should be taken in the sample preparation, including flatness, parallelism, and surface finishing or polishing. Not so obvious is that along some orientations required for the extraction of elastic...
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