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Park, Noejung
Computational Physics & Electronic Structure Lab
Research Interests
  • Electronic structure calculation, computational physics, computational material science

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Seamless lamination of a concave-convex architecture with single-layer graphene

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Title
Seamless lamination of a concave-convex architecture with single-layer graphene
Author
Park, Ji-HoonLim, TaekyungBaik, JaeyoonSeo, KeumyoungMoon, YoungkwonPark, NoejungShin, Hyun-JoonKwak, Sang KyuJu, SanghyunAhn, Joung Real
Issue Date
2015-11
Publisher
ROYAL SOC CHEMISTRY
Citation
NANOSCALE, v.7, no.43, pp.18138 - 18146
Abstract
Graphene has been used as an electrode and channel material in electronic devices because of its superior physical properties. Recently, electronic devices have changed from a planar to a complicated three-dimensional (3D) geometry to overcome the limitations of planar devices. The evolution of electronic devices requires that graphene be adaptable to a 3D substrate. Here, we demonstrate that chemical-vapor-deposited single-layer graphene can be transferred onto a silicon dioxide substrate with a 3D geometry, such as a concave-convex architecture. A variety of silicon dioxide concave-convex architectures were uniformly and seamlessly laminated with graphene using a thermal treatment. The planar graphene was stretched to cover the concave-convex architecture, and the resulting strain on the curved graphene was spatially resolved by confocal Raman spectroscopy; molecular dynamic simulations were also conducted and supported the observations. Changes in electrical resistivity caused by the spatially varying strain induced as the graphene-silicon dioxide laminate varies dimensionally from 2D to 3D were measured by using a four-point probe. The resistivity measurements suggest that the electrical resistivity can be systematically controlled by the 3D geometry of the graphene-silicon dioxide laminate. This 3D graphene-insulator laminate will broaden the range of graphene applications beyond planar structures to 3D materials.
URI
https://scholarworks.unist.ac.kr/handle/201301/17710
URL
http://pubs.rsc.org/en/Content/ArticleLanding/2015/NR/C5NR04004C#!divAbstract
DOI
10.1039/C5NR04004C
ISSN
2040-3364
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PHY_Journal Papers
ECHE_Journal Papers
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