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Ruoff, Rodney S.
Center for Multidimensional Carbon Materials (CMCM)
Research Interests
  • Next generation carbons, ultrathin sp3-bonded carbon sheets, negative curvature (‘Schwartzites’) carbons, sp3/sp2 hybrid carbon materials, model compounds for novel carbon materials, reaction mechanisms

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Multifunctional Macroassembled Graphene Nanofilms with High Crystallinity

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dc.contributor.author Li Peng ko
dc.contributor.author Han, Ying ko
dc.contributor.author Wang, Meihui ko
dc.contributor.author Cao, Xiaoxue ko
dc.contributor.author Gao, Junfeng ko
dc.contributor.author Liu, Yingjun ko
dc.contributor.author Chen, Xianjue ko
dc.contributor.author Wang, Bin ko
dc.contributor.author Wang, Bo ko
dc.contributor.author Zhu, Chongyang ko
dc.contributor.author Wang, Xiao ko
dc.contributor.author Cao, Ke ko
dc.contributor.author Huang, Ming ko
dc.contributor.author Cunning, Benjamin, V ko
dc.contributor.author Pang, Jintao ko
dc.contributor.author Xu, Wendao ko
dc.contributor.author Ying, Yibin ko
dc.contributor.author Xu, Zhen ko
dc.contributor.author Fang, Wenzhang ko
dc.contributor.author Lu, Yang ko
dc.contributor.author Ruoff, Rodney S. ko
dc.contributor.author Gao, Chao ko
dc.date.available 2021-12-24T00:43:53Z -
dc.date.created 2021-11-02 ko
dc.date.issued 2021-12 ko
dc.identifier.citation ADVANCED MATERIALS, v.33, no.49, pp.2104195 ko
dc.identifier.issn 0935-9648 ko
dc.identifier.uri https://scholarworks.unist.ac.kr/handle/201301/55356 -
dc.description.abstract A "cooling-contraction" method to separate large-area (up to 4.2 cm in lateral size) graphene oxide (GO)-assembled films (of nanoscale thickness) from substrates is reported. Heat treatment at 3000 degrees C of such free-standing macroscale films yields highly crystalline "macroassembled graphene nanofilms" (nMAGs) with 16-48 nm thickness. These nMAGs present tensile strength of 5.5-11.3 GPa (with approximate to 3 mu m gauge length), electrical conductivity of 1.8-2.1 MS m(-1), thermal conductivity of 2027-2820 W m(-1) K-1, and carrier relaxation time up to approximate to 23 ps. As a demonstration application, an nMAG-based sound-generator shows a 30 mu s response and sound pressure level of 89 dB at 1 W cm(-2). A THz metasurface fabricated from nMAG has a light response of 8.2% for 0.159 W mm(-2) and can detect down to 0.01 ppm of glucose. The approach provides a straightforward way to form highly crystallized graphene nanofilms from low-cost GO sheets. ko
dc.language 영어 ko
dc.publisher WILEY-V C H VERLAG GMBH ko
dc.title Multifunctional Macroassembled Graphene Nanofilms with High Crystallinity ko
dc.type ARTICLE ko
dc.identifier.wosid 000704567500001 ko
dc.type.rims ART ko
dc.identifier.doi 10.1002/adma.202104195 ko
dc.identifier.url https://onlinelibrary.wiley.com/doi/10.1002/adma.202104195 ko
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