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Lee, Zonghoon
Atomic-Scale Electron Microscopy (ASEM) Lab
Research Interests
  • Advanced Transmission Electron Microscopy (TEM/STEM), in Situ TEM, graphene, 2D materials, low-dimensional crystals, nanostructured materials

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Spiral Growth of Adlayer Graphene

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dc.contributor.author Sun, Haibin ko
dc.contributor.author Kong, Xiao ko
dc.contributor.author Park, Hyoju ko
dc.contributor.author Liu, Fengning ko
dc.contributor.author Lee, Zonghoon ko
dc.contributor.author Ding, Feng ko
dc.date.available 2022-03-03T23:05:34Z -
dc.date.created 2022-02-24 ko
dc.date.issued 2022-03 ko
dc.identifier.citation ADVANCED MATERIALS, v.34, no.12, pp.2107587 ko
dc.identifier.issn 0935-9648 ko
dc.identifier.uri https://scholarworks.unist.ac.kr/handle/201301/57316 -
dc.description.abstract The morphology of as-grown graphene in chemical vapor deposition (CVD) experiments is sensitive to the reaction environment. Understanding the mechanism of formation of different graphene morphologies is essential to achieve controlled graphene CVD growth. Here the growth and formation mechanism of adlayer graphene spirals are reported. An adlayer graphene spiral is formed by fast propagation of the tips of spiral arms along the edge of the first graphene layer. The driving force to form spirals is the limited availability of carbon diffusing from the Cu surface through the edge of the first graphene layer. In addition, it is found that graphene onions are formed by overlapping graphene spirals with clockwise and anticlockwise arms. Based on these features, a kinetic Monte Carlo (kMC) method is demonstrated using which all the observed graphene spiral structures are successfully reproduced at the atomic level. This study thus unravels the hither-to unresolved mechanism of graphene onion growth and paves the way to the controllable growth of few-layer graphene by increasing the carbon supply at the edge of the first layer graphene. ko
dc.description.statementofresponsibility close -
dc.language 영어 ko
dc.publisher WILEY-V C H VERLAG GMBH ko
dc.title Spiral Growth of Adlayer Graphene ko
dc.type ARTICLE ko
dc.identifier.scopusid 2-s2.0-85124546373 ko
dc.identifier.wosid 000753699300001 ko
dc.type.rims ART ko
dc.identifier.doi 10.1002/adma.202107587 ko
dc.identifier.url https://onlinelibrary.wiley.com/doi/10.1002/adma.202107587 ko
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