Microacoustic sensors feature a number of benefits like real-time electronic readout, small size, robustness, high sensitivity, and cost-effective fabrication. For liquid sensing applications Love wave devices utilizing a surface bound shear mode are particularly well-suited. In this paper we discuss the crucial issues in the design of a Love wave device for the utilization in a smart liquid-sensor system, where special attention is paid to the interaction of the sensing device with the associated electronics and the influence of the adsorbing film used for biosensing applications.
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