Surface acoustic wave devices using coupled resonance with nano and microstructures for biosensing applications

Abstract

Surface acoustic wave SAW is an elastic wave that propagates on the surface of a material with its energy mainly confined to a depth of about one wavelength at the surface Usually SAW devices are realized on polished piezoelectric substrates with metallic interdigital transducer IDT made on the surface for the transduction of electrical energy to acoustic energy and vice versa In the last few years the demand for low cost compact and sensitive biosensors for the detection of disease cau