Phononic cystal sensor for medical applications

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...

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Bibliographic Details
Main Authors: Lucklum, Ralf, Zubtsov, Mikhail, Grundmann, Ralf, Villa Arango, Simon
Format: Conference Proceeding
Language:English
Subjects:
Acoustics
biomedical sensor platform
cavity resonance
Cavity resonators
Couplings
Crystals
Glass
phononic crystals
Photonic crystals
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Summary: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 sensor the concentration of a compound in liquid must be related to speed of sound of the liquid in the cavity. A change in the concentration e.g. caused by the appearance of a toxic compound or as a result of a biochemical reaction, results in measurable changes in the transmission coefficient, specifically a shift of a resonance induced transmission peak. Three additional key design challenges for a medical sensor are the strong restriction coming from limitations to approved materials for the analyte container, geometric dimensions in the mm-or sub-mm-range common in hospital or point-of-care environment and acoustic coupling between sensor platform and the analyte container.
ISSN:1930-0395
2168-9229
DOI:10.1109/ICSENS.2014.6985147