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High-intensity focused ultrasound (HIFU) has been used as noninvasive treatment for various diseases. For these therapeutic applications, capacitive micromachined ultrasonic transducers (CMUTs) have advantages that make them potentially preferred transducers over traditional piezoelectric transducers. In this paper, we present the design and the fabrication process of an $8 \times 8$ -mm$^{2}~32 \times 32$ ...
We are developing a capsule ultrasound (CUS) device - a pill with the capability to scan the gastrointestinal (GI) tract through ultrasound. In this paper, we discuss the design and fabrication of the main components of the CUS device including the CMUT array, front-end electronics, and the wireless transmitter. We demonstrate a successfully fabricated 128-element CMUT array with polydimethylsiloxane...
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