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Flexible Eyelid Pressure and Motion Dual-Mode Sensor Using Electric Breakdown-Induced Piezoresistivity and Electrical Potential Sensing

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机构: [1]Beihang Univ, Sch Mech Engn & Automat, Beijing 100191, Peoples R China [2]Beihang Goer WeiFang Intelligent Robot Co Goertek, Weifang 261071, Peoples R China [3]Capital Med Univ, Beijing Tongren Hosp, Beijing Tongren Eye Ctr, Beijing Ophthalmol & Visual Sci Key Lab, Beijing 100730, Peoples R China
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关键词: eyelid pressure flexible electronics electricalbreakdown pressure sensor proximity sensor

摘要:
Multiple ocular surface disorders are associated with the mechanical properties of the interface between the eyelid and cornea. Determining eyelid pressure is vital for diagnosing and preventing these disorders. However, current measurements rely on flat piezoresistive pressure sensor arrays that lack eye-motion sensing capabilities, resulting in discomfort and measurement inaccuracies. This study develops and evaluates an integrated, curved, flexible, dual-mode sensor array for simultaneous eyelid pressure and motion detection, using soft thermoplastic polyurethane (TPU) films as transducers and substrates. A novel manufacturing method based on the electrical breakdown of the TPU film enables piezoresistive pressure sensing, achieving a pressure detection limit of 3.2 Pa. Eyelid motion is measured through electrical potential sensing, where changes in eyelid position alter the electric potentials at the receiving electrodes. The sensor's performance was validated with animal experiments involving rabbit eyes; eyelid pressure was successfully measured during eye opening and blinking. This flexible dual-mode eyelid sensor holds promise for monitoring eyelid pressure and assessing ocular surface disorders.

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出版当年[2025]版:
大类 | 2 区 材料科学
小类 | 2 区 材料科学:综合 2 区 纳米科技
最新[2025]版:
大类 | 2 区 材料科学
小类 | 2 区 材料科学:综合 2 区 纳米科技
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出版当年[2023]版:
Q1 MATERIALS SCIENCE, MULTIDISCIPLINARY Q1 NANOSCIENCE & NANOTECHNOLOGY
最新[2023]版:
Q1 MATERIALS SCIENCE, MULTIDISCIPLINARY Q1 NANOSCIENCE & NANOTECHNOLOGY

影响因子: 最新[2023版] 最新五年平均 出版当年[2023版] 出版当年五年平均 出版前一年[2022版]

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第一作者机构: [1]Beihang Univ, Sch Mech Engn & Automat, Beijing 100191, Peoples R China
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