Droplets, vapours and clouds - A new approach to capacitive transducer manufacture.

Capacitive ultrasonic transducers (cUT) comprise a substrate patterned with a regular array of uniformly dimensioned cavities above which a membrane is positioned. Transmission and reception of ultrasound is effected via controlled electrical or mechanical stimulus of the membrane, respectively. The dimensions of the cavity and the mechanical properties of the membrane determine the vibrational behavior of the resultant transducer. [ABSTRACT FROM PUBLISHER]