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This paper describes the development of an interdigital bonded (IB) 1-3 composite for use in a 30MHz 256-element geometrically focused ultrasonic array. The composite was manufactured using two IB operations in the elevation direction and one IB operation as well as one additional dicing step in the azimuth direction. The resultant composite elements had 14mum x 19mum wide posts separated by 8mum...
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