Planar modes free piezoelectric resonators using a phononic crystal with holes
Por:
Aragon, J. L., Quintero-Torres, R., Dominguez-Juarez, J. L., Iglesias, E., Ronda, S., Montero de Espinosa, F.
Publicada:
1 sep 2016
Categoría:
Acoustics and Ultrasonics
Resumen:
By using the principles behind phononic crystals, a periodic array of circular holes made along the polarization thickness direction of piezoceramic resonators are used to stop the planar resonances around the thickness mode band. In this way, a piezoceramic resonator adequate for operation in the thickness mode with an in phase vibration surface is obtained, independently of its lateral shape. Laser vibrometry, electric impedance tests and finite element models are used to corroborate the performances of different resonators made with this procedure. This method can be useful in power ultrasonic devices, physiotherapy and other external medical power ultrasound applications where piston-like vibration in a narrow band is required. © 2016
Filiaciones:
Aragon, J. L.:
Univ Nacl Autonoma Mexico, Ctr Fis Aplicada & Tecnol Avanzada, Apartado Postal 1-1010, Queretaro 76230, Mexico
Quintero-Torres, R.:
Univ Nacl Autonoma Mexico, Ctr Fis Aplicada & Tecnol Avanzada, Apartado Postal 1-1010, Queretaro 76230, Mexico
Dominguez-Juarez, J. L.:
Univ Nacl Autonoma Mexico, Ctr Fis Aplicada & Tecnol Avanzada, Apartado Postal 1-1010, Queretaro 76230, Mexico
Iglesias, E.:
CSIC, Inst Tecnol Fis & Informac Leonardo Torres Queved, Serrano 144, E-28006 Madrid, Spain
Ronda, S.:
CSIC, Inst Tecnol Fis & Informac Leonardo Torres Queved, Serrano 144, E-28006 Madrid, Spain
Montero de Espinosa, F.:
CSIC, Inst Tecnol Fis & Informac Leonardo Torres Queved, Serrano 144, E-28006 Madrid, Spain
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