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Previous studies showed that Lateral field excitation (LFE) devices on AT-cut quartz are sensitive to liquid electrical property changes. However, the sensitivity of the device is limited due to the low piezoelectric coupling factor. In the present study, a pseudo-LFE sensor on (yxl)21.82?? lithium niobate is investigated both theoretically and experimentally. It is found that the (yxl)21.82?? LiNbO...
In the present study, the LFE (lateral field excitation) coupling coefficient and phase velocity for (yxl)-16.5deg LiTaO3 were calculated as a function of the angle psi, which indicates the direction of the driving electric field with respect to the crystallographic x-axis of the piezoelectric plate. Several LFE devices of 5 MHz were designed and fabricated in two groups: psi = 0deg and psi = plusmn90deg...
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