TY - JOUR A1 - Lucklum, Ralf A1 - Zubtsov, Mikhail A1 - Oseev, Aleksandr A1 - Schmidt, Marc-Peter A1 - Hirsch, Sören T1 - SAW Based Sandwich Phononic Crystal Sensor T2 - Procedia Engineering N2 - Sensing is nowadays an accepted application of phononic crystals with chemical and biosensors for liquid analytes being the perhaps most promising ones. A liquid-filled defect is introduced that turns into a resonant cavity. Similar to the well-known resonant sensors sensitivity can be increased with higher operating frequencies. We introduce a Sandwiched Phononic Crystal (SPC), which applies a resonant cavity located between two stacked layers on top of a SAW device. Key challenges are coupling of surface acoustic wave into the liquid cavities and avoiding scattering of the guided waves into the bulk of the sensor chip. Y1 - 2024 UR - https://opus4.kobv.de/opus4-fhbrb/frontdoor/index/index/docId/3082 UR - https://linkinghub.elsevier.com/retrieve/pii/S1877705816335640 SN - 18777058 IS - 168 SP - 700 EP - 703 PB - Elsevier ER -