The particle velocity distribution on the surface of AT-cut quartz crystals oscillating in liquid is investigated. The distribution, amplitude, and direction of surface motion are determined. This study improves the understanding of the oscillation characteristics of quartz crystals in solution.
The particle velocity distribution on an AT-cut quartz crystal oscillating in water is used to model the liquid flow profile near the crystal surface. The nonuniform particle velocity on the quartz surface results in vertical motion in the bulk liquid. This causes a pressure wave to be launched from the quartz surface. This wave is used to measure the velocity of sound in the liquid.
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