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Achieving low power consumption and high sensitivity is a major obstacle in realizing the potential of surface acoustic wave (SAW) devices in portable sensing applications. In this paper, we demonstrate that an optimal combination of a microcavity structure filled with a low acoustic impedance material in the delay path combined with a suitable wave guide lowers power consumption substantially and...
To realize the potential of SAW devices in portable sensing applications, it is important to reduce the power consumption and improve sensitivity of existing surface acoustic wave (SAW) sensors. In this work, we designed several SAW sensors based on ST 90o-X quartz and silicon dioxide (SiO2) waveguide with or without filled microcavities to achieve both these in a single device. A 3D finite element...
Temperature has great influences on the surface acoustic wave (SAW) biosensors. Different substrates were tested and the methods for improving the temperature performance of the SAW biosensors were discussed here. The effects of temperature on the SAW sensors mainly result from the temperature coefficient of the SAW device and the oscillating circuit. To eliminate the impact of environment, a twin...
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