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dc.contributor.author박지영-
dc.date.accessioned2024-06-11T05:03:38Z-
dc.date.available2024-06-11T05:03:38Z-
dc.date.issued2023-10-16-
dc.identifier.citationSCIENCE AND TECHNOLOGY OF ADVANCED MATERIALS, v. 24, no 1, article no. 2260301, page. 1-12en_US
dc.identifier.issn1468-6996en_US
dc.identifier.issn1878-5514en_US
dc.identifier.urihttps://www.tandfonline.com/doi/full/10.1080/14686996.2023.2260301en_US
dc.identifier.urihttps://repository.hanyang.ac.kr/handle/20.500.11754/190623-
dc.description.abstractThis study introduces an approach to overcome the limitations of conventional pressure sensors by developing a thin and lightweight composite film specifically tailored for flexible capacitive pressure sensors, with a particular emphasis on the medium and high pressure range. To accomplish this, we have engineered a composite film by combining polyvinylidene fluoride (PVDF) and graphite nanoplatelets (GNP) derived from expanded graphite (Ex-G). A uniform sized GNPs with an average lateral size of 2.55(av) and an average thickness of 33.74 (av) with narrow size distribution was obtained with a gas-induced expansion of expandable graphite (EXP-G) combined with tip sonication in solvent. By this precisely controlled GNP within the composite film, a remarkable improvement in sensor sensitivity has been achieved, surpassing 4.18 MPa-1 within the pressure range of 0.1 to 1.6 MPa. This enhancement can be attributed to the generation of electric charge from the movement of GNP in the polymer matrix. Additionally, stability testing has demonstrated the reliable operation of the composite film over 1000 cycles. Notably, the composite film exhibits exceptional continuous pressure sensing capabilities with a rapid response time of approximately 100 milliseconds. Experimental validation using a 3 x 3 sensor array has confirmed the accurate detection of specific contact points, thus highlighting the potential of the composite film in selective pressure sensing. These findings signify an advancement in the field of flexible capacitive pressure sensors that offer enhanced sensitivity, consistent operation, rapid response time, and the unique ability to selectively sense pressure.en_US
dc.description.sponsorshipThis research was supported by the Clean ProductionTechnology Program of the Korea Evaluation Institute ofIndustrial Technology (KIET)-granted financial resourcesfrom the Ministry of Trade, Industry and Energy, Korea[no. 20000458] and by Korea Institute for Advancement ofTechnology (KIAT) grant funded by the Korea Government((MOTIE) [P0008425], The Competency DevelopmentProgram for Industry Specialist)en_US
dc.languageen_USen_US
dc.publisherTAYLOR & FRANCIS LTDen_US
dc.relation.ispartofseriesv. 24, no 1, article no. 2260301;1-12-
dc.subjectcapacitive pressure sensoren_US
dc.subjectdielectric layeren_US
dc.subjectPVDF-GNP compositesen_US
dc.subjectthin filmen_US
dc.titleEnhanced capacitive pressure sensing performance by charge generation from filler movement in thin and flexible PVDF-GNP composite filmsen_US
dc.typeArticleen_US
dc.relation.no1-
dc.relation.volume24-
dc.identifier.doihttps://doi.org/10.1080/14686996.2023.2260301en_US
dc.relation.page1-12-
dc.relation.journalSCIENCE AND TECHNOLOGY OF ADVANCED MATERIALS-
dc.contributor.googleauthorKim, Han-
dc.contributor.googleauthorLim, Minseob-
dc.contributor.googleauthorJang, Byungkwon-
dc.contributor.googleauthorPark, Si-woo-
dc.contributor.googleauthorPark, Ji Young-
dc.contributor.googleauthorShen, Haishan-
dc.contributor.googleauthorKoo, Kangmo-
dc.contributor.googleauthorCho, Hong-Baek-
dc.contributor.googleauthorChoa, Yong-Ho-
dc.relation.code2023032864-
dc.sector.campusE-
dc.sector.daehakEXECUTIVE VICE PRESIDENT FOR ERICA[E]-
dc.sector.departmentINSTITUTE FOR ERICA CONVERGENCE-
dc.identifier.pidjiyoung3073-
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