title: Liquid sensor utilizing a regular phononic crystal with normal incidence of sound.
abstract: A phononic crystal device is investigated as sensor platform utilizing resonant transmission. Here, we use a phononic crystal plate consisting of a solid matrix and liquidfilled holes. The device is fully immersed into the liquid in such a way that the incidence direction of sound is normal to the plate. A characteristic transmission peak, calculated using finite-difference time-domain (FDTD) and determined with two different experimental setups, has been found to strongly depend on the liquid sound velocity. The peak maximum frequency serves as measure for liquid composition.
authors.affiliation: Institute for Micro and Sensor Systems (IMOS), Otto-von-Guericke-University Magdeburg, Magdeburg,Germany. ralf.lucklum@ovgu.de
authors.forename: Ralf
authors.initials: R
authors.lastname: Lucklum
authors.forename: Mikhail
authors.initials: M
authors.lastname: Zubtsov
authors.forename: Manzhu
authors.initials: M
authors.lastname: Ke