The aim of this project is to develop a high sensitivity and high resolution micro ciliary pressure sensor using MEMS technology.<br>The absolute pressure sensing array proposed in this project consists of two parts.<br>One is the preparation of pressure sensitive permeability effect magnetic cilium film, the other is the fabrication of sealed cavity and finger fork electrode.<br>The magnetic ciliated film is an important structure of pressure sensing unit, and the conductive particles deposited on it are one of the key points of this research project, which will greatly affect the characteristics of the sensor.<br>The seal chamber is used as the reference pressure for absolute pressure sensing, which can be used to push the pressure change.<br>The permeability effect magnetic cilium film is composed of a high aspect ratio magnetic micro cilium array and conductive particles deposited on it.<br>The research team has mastered the magnetic cilium growth technology, and the latest achievements have been published in the best Symposium MEMS 2020 in the field of micro electromechanical.<br>This project will further optimize the microstructure of the ciliated array based on the current research results.<br>In order to achieve the best penetration effect of the conductive particles deposited on the cilia, the gas condensation source system will also be developed.<br>Two different types of conducting particles, carbon nanotubes and metal clusters, were compared.<br>The sealed cavity is made of polymer film and glass cavity. It is a reference pressure cavity designed for absolute pressure sensing.<br>Finger fork electrode is made by traditional MEMS process.<br>Compared with the parallel electrode, the positive and negative electrodes of the finger fork electrode can contact the permeability effect magnetic cilium film uniformly, so it has a more sensitive sensing performance.<br>The ultimate goal of this project is to develop a pressure sensing array with high sensitivity and resolution.<br>Compared with the current pressure sensing array, the innovative element design proposed in this project has a high sensitivity, a wide range of pressure detection, and a lower pressure detectability limit.<br>It also has the advantages of fast response time, recoverability and durability.<br>It will meet the needs of various applications, including wearable electronic devices, absolute pressure sensing, barometer, physiological signal monitoring and minimally invasive surgery.<br>
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