Multi-attribute wearable pressure sensor based on multilayered modulation with high constant sensitivity over a wide range
作者机构：School of Information Science and EngineeringUniversity of JinanJinan 250022China Shandong Provincial Key Laboratory of Network Based Intelligent ComputingUniversity of JinanJinan 250022China School of Integrated Circuits and ElectronicsBeijing Institute of TechnologyBeijing 100081China School of Aeronautical and Astronautical Engineering Purdue UniversityWest LafayetteIN 47907USA
出 版 物：《Nano Research》 (纳米研究（英文版）)
年 卷 期：2023年第16卷第5期
页 面：7583-7592页
核心收录：
学科分类：0710[理学-生物学] 08[工学] 080202[工学-机械电子工程] 0805[工学-材料科学与工程（可授工学、理学学位）] 0802[工学-机械工程]
基 金：the National Natural Science Foundation of China(Nos.62174068 and 61888102) Rizhao City Key Research and Development Program(No.2021ZDYF010102).
主 题：wearable pressure sensors multilayer structure high constant sensitivity multi-attribute physiological signals monitoring
摘 要：Flexible pressure sensors capable of monitoring diverse physiological signals and body movements have garnered tremendous attention in wearable electronic devices.Thereinto,high constant sensitivity over a wide pressure range combined with breathability,biocompatibility,biodegradability is pivotal for manufacturing of reliable pressure sensors in practical sensing applications.In this work,inspired by the multilayered structure of skin epidermis,we propose and demonstrate a multi-attribute wearable piezoresistive pressure sensor consisting of multilayered gradient conductive poly(ε-caprolactone)nanofiber membranes composites.In response to externally applied pressure,a layer-by-layer current path is activated inside the multilayered membranes composites,leading to the most salient sensing performance of high constant sensitivity of 33.955 kPa^(−1) within the pressure range of 0–80 kPa.The proposed pressure sensor also exhibits a fast response–relaxation time,a low detection limit,excellent stability,which can be successfully used to measure human physiological signals.Lastly,an integrated sensor array system that can locate objects’positions is constructed and applied to simulate sitting posture monitoring.These results indicate that the proposed pressure sensor holds great potential in health monitoring and wearable electronic devices.
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