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Phononic crystals (PnC) consist of two or more materials arranged in a spatially periodic manner. Introduction of a defect into the crystal lattice is a technique to create resonant modes. The idea behind the application of a PnC as sensor element is the dependence of the characteristic features of those modes on speed of sound. Currently the sensor designs are based on common 2D phononic crystal...
The use of phononic crystals and resonant structures as sensing platforms paves the way to the development of new biomedical technologies. An acoustic sensor with a resonant cavity and a disposable element was investigated in this paper. The sensor consists of seven layers with high acoustic impedance mismatch. The disposable element used was a glass spectrophotometry cuvette and, during the experimentation,...
We report on first steps towards a phononic crystal sensor for biomedical applications. Phononic crystal sensors are a new concept following the route of photonic crystal sensors. Basically, the material of interest constitutes one component of the phononic crystal. Here a liquid analyte is confined in a disposable element which acts as defect in a phononic crystal. In an application as biomedical...
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