Design and fabrication of a SIO2/ST-cut quartz love mode surface acoustic wave transducer for operation in liquid media

Kalantar-Zadeh, K, Wlodarski, W, Holland, A, Austin, M and Mendis, H 2000, 'Design and fabrication of a SIO2/ST-cut quartz love mode surface acoustic wave transducer for operation in liquid media', in Conference on Optoelectronic and Microelectronic Materials and Devices, Melbourne, Australia, 6-8 December 2000.


Document type: Conference Paper
Collection: Conference Papers

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Title Design and fabrication of a SIO2/ST-cut quartz love mode surface acoustic wave transducer for operation in liquid media
Author(s) Kalantar-Zadeh, K
Wlodarski, W
Holland, A
Austin, M
Mendis, H
Year 2000
Conference name Conference on Optoelectronic and Microelectronic Materials and Devices
Conference location Melbourne, Australia
Conference dates 6-8 December 2000
Proceedings title Conference on Optoelectronic and Microelectronic Materials and Devices
Publisher IEEE
Place of publication New York, USA
Abstract Love mode surface acoustic wave (SAW) transducers were designed and fabricated by depositing silicon dioxide on a ST-cut quartz crystal wafer using r.f. magnetron sputtering. Two different propagation directions have been investigated by aligning the SAW finger pattern along the x-axis propagation direction and the direction orthogonal to the x-axis of the ST-cut quartz crystal. The latter, in which the propagation mode is dominantly the Love mode, shows promising characteristics for use as a high frequency SAW transducer because of high acoustic wave propagation velocity and electromechanical coupling coefficient. Phase and group velocity, capacitance per unit length of electrodes, insertion loss and input admittance, of two transducers, with different alignments, have been measured and compared.
Subjects Colloid and Surface Chemistry
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