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Kwak, Sang Kyu
Kyu’s MolSim Lab @ UNIST
Research Interests
  • Molecular modeling and simulation, statistical thermodynamics, molecular physics

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Biodegradable, electro-active chitin nanofiber films for flexible piezoelectric transducers

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dc.contributor.authorKim, Kyungtaeko
dc.contributor.authorHa, Minjeongko
dc.contributor.authorChoi, Byeongwookko
dc.contributor.authorJoo, Se Hunko
dc.contributor.authorKang, Han Solko
dc.contributor.authorPark, Ju Hyunko
dc.contributor.authorGu, Bongjunko
dc.contributor.authorPark, Chanhoko
dc.contributor.authorPark, Cheolminko
dc.contributor.authorKim, Jongbokko
dc.contributor.authorKwak, Sang Kyuko
dc.contributor.authorKo, Hyunhyubko
dc.contributor.authorJin, Junghoko
dc.contributor.authorKang, Seok Juko
dc.date.available2018-04-06T00:31:25Z-
dc.date.created2018-04-02ko
dc.date.issued201806ko
dc.identifier.citationNANO ENERGY, v.48, no., pp.275 - 283ko
dc.identifier.issn2211-2855ko
dc.identifier.urihttp://scholarworks.unist.ac.kr/handle/201301/23911-
dc.identifier.urihttps://www.sciencedirect.com/science/article/pii/S2211285518301952ko
dc.description.abstractSince the conventional fluorine-based electro-active polymers release toxic residues into the environment during their syntheses and decomposition processes, eco-friendly piezoelectric polymers are urgently demanded in the field of energy-related soft materials. Here, we derive a high-performance biodegradable chitin polymer from squid pen material and demonstrate its utility as a flexible piezoelectric material. The readily controlled ferroelectric chitin film confers excellent piezoelectricity under external mechanical pressure, resulting in comparable performance with that of conventional fluorine-based piezoelectric polymers. In particular, the sufficient piezoelectric behavior in chitin film allows us to not only realize a high-fidelity paper-type speaker and microphone that operates over a wide frequency range without significantly deteriorating the input and output sounds but also demonstrate transparent speaker consisting of AgNWs electrodes onto freestanding chitin film which also enables to resemble the original sound. Finally, the biodegradable chitin polymer can be successfully dissolved by chitinase enzyme within eight days without any toxic residues remained.ko
dc.languageENGko
dc.publisherElsevier BVko
dc.subjectPiezoelectric polymerko
dc.subjectChitinko
dc.subjectFerroelectric polymerko
dc.subjectPolysaccharideko
dc.subjectPaper speakerko
dc.titleBiodegradable, electro-active chitin nanofiber films for flexible piezoelectric transducersko
dc.typeARTICLEko
dc.identifier.pid1265null
dc.identifier.pid1108null
dc.identifier.pid2621null
dc.identifier.rimsid30068ko
dc.identifier.scopusid2-s2.0-85044603827ko
dc.identifier.wosid000432604600032ko
dc.type.rimsAko
dc.identifier.doihttp://dx.doi.org/10.1016/j.nanoen.2018.03.056ko
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