University of Massachusetts

Lian Dai

Joel M Therrien

Alireza Amirkhizi

According to one configuration, an acoustical device includes a piezoelectric substrate and at least one curved electrode. Material on a surface of the piezoelectric substrate defines boundaries of a resonance region. The curved electrode is disposed on the piezoelectric substrate in the resonance region and is operable to receive a voltage input signal through a first conductive waveguide. When present, the voltage input signal causes generation and conveyance of acoustical waves from the curved electrode into the resonance region. The acoustical device optionally includes a second curved electrode in the resonance region, which converts the acoustical waves present in the resonance region to an output voltage signal.

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Lian Dai