Chang Hong Hu

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In this work, we develop the fabrication process of the radial array transducers, which are used to combine the gastroscope for acquiring ultrasound images of the surrounding organs, tissues and vessels. The PMNPT piezocrystal and its 1–3 piezocomposite were used as the active elements, respectively. High acoustic attenuation and flexibility(More)
The fabrication technology used to develop a high frequency (> 50 MHz) annular array transducer is presented. A 9 μm P(VDF-TrFE) film was bonded to gold annuli electrodes on the top layer of a two sided polyimide flexible circuit. Each annulus was separated by a 30 μm kerf and had several electroplated micro vias that connected to electroded traces on the(More)
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