Photoacoustic characterization of custom-made thin film AlN MEMS ultrasound transducers

Kusch, Jonas and Flockhart, Gordon M.H. and Bauer, Ralf and Uttamchandani, Deepak (2018) Photoacoustic characterization of custom-made thin film AlN MEMS ultrasound transducers. In: Conference on Optical MEMS and Nanophotonics 2018, 2018-07-29 - 2018-08-02, Ecole Polyechnique Fédérale de Lausanne. (In Press)

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    Abstract

    Two MEMS thin film aluminium nitride ultrasound transducer array designs for photoacoustic sensing applications are presented. They are characterized using the pitch and catch technique and photoacoustic excitation. The results of both approaches are subsequently compared.