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Combined use of Fresnel lens and holey-structrured metamaterial to obtain beam focus far from ultrasound source

F. Torres,N. Barniol,A. Uranga

2022 IEEE International Ultrasonics Symposium (IUS)（2022）

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Abstract
This paper studies the feasibility to microfabricate the protective layer needed over the ultrasound sources combining Fresnel lens and holey-structured metamaterial for focusing and enhance resolution while providing protection to the ultrasound system.
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PMUT,Fresnel lens,ultrasound metamaterial,fingerprint image
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