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dc.contributor.authorKim, Jung Hyuk-
dc.contributor.authorKim, Bosung-
dc.contributor.authorKim, Sang-Woo-
dc.contributor.authorKang, Hyun Wook-
dc.contributor.authorPark, Min-Chul-
dc.contributor.authorPark, Dong Hee-
dc.contributor.authorJu, Byeong Kwon-
dc.contributor.authorChoi, Won Kook-
dc.date.accessioned2024-01-19T15:01:54Z-
dc.date.available2024-01-19T15:01:54Z-
dc.date.created2021-09-04-
dc.date.issued2021-04-02-
dc.identifier.issn0957-4484-
dc.identifier.urihttps://pubs.kist.re.kr/handle/201004/117149-
dc.description.abstractCoaxial type piezoelectric energy generator (C-PEG) nanofiber was fabricated by a self-designed continuous electrospinning deposition system. Piezoelectric PVDF-TrFE nanofiber as an electroactive material was electrospun at a discharge voltage of 9-12 kV onto a simultaneously rotating and transverse moving Cu metal wire at an angular velocity of omega(g) = 60-120 RPM. The piezoelectric coefficient d(33) of the PVDF-TrFE nanofiber was approximately -20 pm V-1. The generated output voltage (V-G) increased according to the relationship exp(-alpha P) (alpha = 0.41- 0.57) as the pressure (P) increased from 30 to 500 kpa. The V-G values for ten and twenty pieces of C-PEG were V-G = 3.9 V and 9.5 V at P = 100 kpa, respectively, relatively high output voltages compared to previously reported values. The high V-G for the C-PEG stems from the fact that it can generate a fairly high V-G due to the increased number of voltage collection points compared to a conventional two-dimensional (2-dim) capacitor type of piezoelectric film or fiber device. C-PEG yarn was also fabricated via the dip-coating of a PDMS polymer solution, followed by winding with Ag-coated nylon fiber as an outer electrode. The current and power density of ten pieces of C-PEG yarn were correspondingly 22 nA cm(-2) and 8.6 mu W cm(-3) at V-G = 1.97 V, higher than previously reported values of 5.54 and 6 mu W cm(-3). The C-PEG yarn, which can generate high voltage compared to the conventional film/nanofiber mat type, is expected to be very useful as a wearable energy generator system.-
dc.languageEnglish-
dc.publisherIOP PUBLISHING LTD-
dc.subjectNANOWIRES HYBRID NANOGENERATOR-
dc.subjectFIBER-
dc.subjectTEXTILES-
dc.subjectSENSOR-
dc.titleHigh-performance coaxial piezoelectric energy generator (C-PEG) yarn of Cu/PVDF-TrFE/PDMS/Nylon/Ag-
dc.typeArticle-
dc.identifier.doi10.1088/1361-6528/abd57e-
dc.description.journalClass1-
dc.identifier.bibliographicCitationNANOTECHNOLOGY, v.32, no.14-
dc.citation.titleNANOTECHNOLOGY-
dc.citation.volume32-
dc.citation.number14-
dc.description.journalRegisteredClassscie-
dc.description.journalRegisteredClassscopus-
dc.identifier.wosid000607311900001-
dc.identifier.scopusid2-s2.0-85100320545-
dc.relation.journalWebOfScienceCategoryNanoscience & Nanotechnology-
dc.relation.journalWebOfScienceCategoryMaterials Science, Multidisciplinary-
dc.relation.journalWebOfScienceCategoryPhysics, Applied-
dc.relation.journalResearchAreaScience & Technology - Other Topics-
dc.relation.journalResearchAreaMaterials Science-
dc.relation.journalResearchAreaPhysics-
dc.type.docTypeArticle-
dc.subject.keywordPlusNANOWIRES HYBRID NANOGENERATOR-
dc.subject.keywordPlusFIBER-
dc.subject.keywordPlusTEXTILES-
dc.subject.keywordPlusSENSOR-
dc.subject.keywordAuthorcoaxial piezoelectric energy generator (C-PEG)-
dc.subject.keywordAuthorPVDF-TrFE nanofibers-
dc.subject.keywordAuthorin-plane array-
dc.subject.keywordAuthorC-PEG yarn-
dc.subject.keywordAuthorcharacteristic output voltage-pressure curve-
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