{"title":"Variable Stiffness Flexible Wearable Pressure Sensors with Dual-Mode Switching Sensitivity and Working Pressure Range","authors":"Kangyu Jia, Hao Zhu, Yiming Ke, Daiqing Wang, Xiaojuan Ming, Mufang Li*, Weibing Zhong* and Dong Wang*, ","doi":"10.1021/acsaelm.4c00462","DOIUrl":null,"url":null,"abstract":"<p >The dilemma between sensitivity and the working pressure range in flexible pressure sensors restricts their general applicability. Herein the phase-change materials were introduced into carbon nanotube/polyurethane (CNT/PU) composites to create switchable dual-mechanical-mode membranes (SDMs). The developed SDMs pressure sensor can be switched between rigid and soft working modes. The soft mode exhibits an approximately 13.3 times improvement in sensitivity compared with the rigid mode, while the rigid mode offers a roughly 64% increase in the working pressure range compared to the soft mode. The SDMs pressure sensor shows excellent cyclic stability and an applicable response/recovery time. This soft/rigid dual-mode SDMs sensor has been successfully applied for sensing both small and large pressures, which paves an avenue for balancing sensitivity and the working pressure range in various scenarios.</p>","PeriodicalId":3,"journal":{"name":"ACS Applied Electronic Materials","volume":"6 5","pages":"3865–3873"},"PeriodicalIF":4.7000,"publicationDate":"2024-05-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"ACS Applied Electronic Materials","FirstCategoryId":"88","ListUrlMain":"https://pubs.acs.org/doi/10.1021/acsaelm.4c00462","RegionNum":3,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q1","JCRName":"ENGINEERING, ELECTRICAL & ELECTRONIC","Score":null,"Total":0}
引用次数: 0
Abstract
The dilemma between sensitivity and the working pressure range in flexible pressure sensors restricts their general applicability. Herein the phase-change materials were introduced into carbon nanotube/polyurethane (CNT/PU) composites to create switchable dual-mechanical-mode membranes (SDMs). The developed SDMs pressure sensor can be switched between rigid and soft working modes. The soft mode exhibits an approximately 13.3 times improvement in sensitivity compared with the rigid mode, while the rigid mode offers a roughly 64% increase in the working pressure range compared to the soft mode. The SDMs pressure sensor shows excellent cyclic stability and an applicable response/recovery time. This soft/rigid dual-mode SDMs sensor has been successfully applied for sensing both small and large pressures, which paves an avenue for balancing sensitivity and the working pressure range in various scenarios.
期刊介绍：
ACS Applied Electronic Materials is an interdisciplinary journal publishing original research covering all aspects of electronic materials. The journal is devoted to reports of new and original experimental and theoretical research of an applied nature that integrate knowledge in the areas of materials science, engineering, optics, physics, and chemistry into important applications of electronic materials. Sample research topics that span the journal's scope are inorganic, organic, ionic and polymeric materials with properties that include conducting, semiconducting, superconducting, insulating, dielectric, magnetic, optoelectronic, piezoelectric, ferroelectric and thermoelectric.
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