Mechanical microsensors for pulse measurement

Abstract : This paper presents a low cost flexible sensor that has been characterized by a homemade circuit. The technological process of the sensor was carried out at low temperature (180 °C) allowing to fabricate them on many types of substrates including flexible. As piezoresistive materials, N-type doped microcrystalline silicon deposited by PECVD was used. In order to obtain a good sensitivity to deformation, different designs were studied. Sensors are able to response to variable frequencies and different excitation waves such as a simple delta pulse or complex signals like the ECG wave. Several geometries are compared with the aim of obtaining the most sensitive design. This shows the feasibility and development of a highly sensitive system for small deformation measurements. ©The Electrochemical Society.
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https://hal-univ-rennes1.archives-ouvertes.fr/hal-02042748
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Submitted on : Wednesday, February 20, 2019 - 3:36:18 PM
Last modification on : Thursday, April 25, 2019 - 2:06:56 PM

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F. Garcia-Castro, O. de Sagazan, C. Simon, N. Coulon, F. Le Bihan. Mechanical microsensors for pulse measurement. Symposium on Wearable Sensors and Systems 1 -and- Microfabricated and Nanofabricated Systems for MEMS/NEMS 14 - AiMES 2018, ECS and SMEQ Joint International Meeting, Sep 2018, Cancun, Mexico. pp.71-78, ⟨10.1149/08616.007leest⟩. ⟨hal-02042748⟩

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