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Ko, Hyunhyub
Functional Nanomaterials & Devices Lab
Research Interests
  • Functional nanomaterials, flexible electronics, electronic skins, wearable sensors

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Giant Tunneling Piezoresistance of Composite Elastomers with Interlocked Microdome Arrays for Ultrasensitive and Multimodal Electronic Skins

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dc.contributor.author Park, Jonghwa ko
dc.contributor.author Lee, Youngoh ko
dc.contributor.author Hong, Jaehyung ko
dc.contributor.author Ha, Minjeong ko
dc.contributor.author Jung, Young-Do ko
dc.contributor.author Lim, Hyuneui ko
dc.contributor.author Kim, Sung Youb ko
dc.contributor.author Ko, Hyunhyub ko
dc.date.available 2014-05-08T02:08:29Z -
dc.date.created 2014-05-08 ko
dc.date.issued 2014-05 ko
dc.identifier.citation ACS NANO, v.8, no.5, pp.4689 - 4697 ko
dc.identifier.issn 1936-0851 ko
dc.identifier.uri https://scholarworks.unist.ac.kr/handle/201301/4507 -
dc.description.abstract The development of flexible electronic skins with high sensitivities and multimodal sensing capabilities is of great interest for applications ranging from human healthcare monitoring to robotic skins to prosthetic limbs. Although piezoresistive composite elastomers have shown great promise in this area of research, typically poor sensitivities and low response times, as well as signal drifts with temperature, have prevented further development of these materials in electronic skin applications. Here, we introduce and demonstrate a design of flexible electronic skins based on composite elastomer films that contain interlocked microdome arrays and display giant tunneling piezoresistance. Our design substantially increases the change in contact area upon loading and enables an extreme resistance-switching behavior (ROFF/RON of 105). This translates into high sensitivity to pressure (−15.1 kPa-1, 0.2 Pa minimum detection) and rapid response/relaxation times (0.04 s), with a minimal dependence on temperature variation. We show that our sensors can sensitively monitor human breathing flows and voice vibrations, highlighting their potential use in wearable human-health monitoring systems. ko
dc.description.statementofresponsibility close -
dc.language 영어 ko
dc.publisher AMER CHEMICAL SOC ko
dc.title Giant Tunneling Piezoresistance of Composite Elastomers with Interlocked Microdome Arrays for Ultrasensitive and Multimodal Electronic Skins ko
dc.type ARTICLE ko
dc.identifier.scopusid 2-s2.0-84901660495 ko
dc.identifier.wosid 000336640600058 ko
dc.type.rims ART ko
dc.description.wostc 1 *
dc.description.scopustc 0 *
dc.date.tcdate 2014-10-18 *
dc.date.scptcdate 2014-07-12 *
dc.identifier.doi 10.1021/nn500441k ko
dc.identifier.url https://pubs.acs.org/doi/10.1021/nn500441k ko
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