The Use of Phononic Crystals to Design Piezoelectric Power Transducers
AbstractIt was recently proposed that the lateral resonances around the working resonance band of ultrasonic piezoelectric sandwich transducers can be stopped by a periodic array of circular holes drilled along the main propagation direction (a phononic crystal). In this work, the performance of different transducer designs made with this procedure is tested using laser vibrometry, electric impedance tests and finite element models (FEM). It is shown that in terms of mechanical vibration amplitude and acoustic efficiency, the best design for physiotherapy applications is when both, the piezoceramic and an aluminum capsule are phononic structures. The procedure described here can be applied to the design of power ultrasonic devices, physiotherapy transducers and other external medical power ultrasound applications where piston-like vibration in a narrow band is required. View Full-Text
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Ronda, S.; Aragón, J.L.; Iglesias, E.; Montero de Espinosa, F. The Use of Phononic Crystals to Design Piezoelectric Power Transducers. Sensors 2017, 17, 729.
Ronda S, Aragón JL, Iglesias E, Montero de Espinosa F. The Use of Phononic Crystals to Design Piezoelectric Power Transducers. Sensors. 2017; 17(4):729.Chicago/Turabian Style
Ronda, Silvia; Aragón, José L.; Iglesias, Elvira; Montero de Espinosa, Francisco. 2017. "The Use of Phononic Crystals to Design Piezoelectric Power Transducers." Sensors 17, no. 4: 729.
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