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3D 프린트 된 몰드로 제작한 마이크로범프와 액체 금속을 이용한 헬스 케어를 위한 웨어러블 유연 압력센서 개발
김규영(Kyuyoung Kim),정용록(Yongrok Jeong),최중락(Jungrak Choi),김민성(Minseong Kim),박재호(Jaeho Park),김승환(Seunghwan Kim),오용석(Yongsuk Oh),박인규(Inkyu Park) 대한기계학회 2018 대한기계학회 춘추학술대회 Vol.2018 No.12
We introduce a wearable microfluidic pressure sensor using 3D printing technology for health monitoring applications. Our pressure sensor fabricated with elastomer and liquid metal that provide stretchability has an enhanced sensitivity compared to other reported microfluidic pressure sensors. Also, 5,000 cyclic test showed its reliable and stable signal response. The microchannels are fabricated by 3D-printed microchannel molds with 3D-printed microbumps. The effect of microbump in the channel was analyzed using finite element method (FEM) simulation and demonstrated through various eletromechanical experiments. For health monitoring applications, human body pressure distribution was monitored in real-time using pressure sensor array attached on the clothes. The pressure sensing system using the proposed pressure sensor would be applied to early diagnosis and prevention of diseases such as bedsores.