T J Robertson

The radiated fields of focussing air-coupled ultrasonic phased arrays.

D A Hutchins, D. Hutchins, A. Neild, 2005, Ultrasonics.

A conical air-coupled capacitance transducer for surface imaging.

D A Hutchins, D. Hutchins, D. Billson, 2003, Ultrasonics.

The characterization of capacitive micromachined ultrasonic transducers in air.

D A Hutchins, D. Hutchins, D. Billson, 2002, Ultrasonics.