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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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Single-crystal two-dimensional material epitaxy on tailored non-single-crystal substrates

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Title
Single-crystal two-dimensional material epitaxy on tailored non-single-crystal substrates
Author
Li, XinWu, GuilinZhang, LeiningHuang, DepingLi, YunqingZhang, RuiqiLi, MengZhu, LinGuo, JingHuang, TianlinShen, JunWei, XingzhanYu, Ka ManDong, JichenAltman, Michael S.Ruoff, Rodney S.Duan, YinwuYu, JieWang, ZhujunHuang, XiaoxuDing, FengShi, HaofeiTang, Wenxin
Issue Date
2022-04
Publisher
NATURE PORTFOLIO
Citation
NATURE COMMUNICATIONS, v.13, no.1, pp.1773
Abstract
The use of single-crystal substrates as templates for the epitaxial growth of single-crystal overlayers has been a primary principle of materials epitaxy for more than 70 years. Here we report our finding that, though counterintuitive, single-crystal 2D materials can be epitaxially grown on twinned crystals. By establishing a geometric principle to describe 2D materials alignment on high-index surfaces, we show that 2D material islands grown on the two sides of a twin boundary can be well aligned. To validate this prediction, wafer-scale Cu foils with abundant twin boundaries were synthesized, and on the surfaces of these polycrystalline Cu foils, we have successfully grown wafer-scale single-crystal graphene and hexagonal boron nitride films. In addition, to greatly increasing the availability of large area high-quality 2D single crystals, our discovery also extends the fundamental understanding of materials epitaxy. The heteroepitaxial growth of crystalline 2D materials is usually based on single-crystal substrates. Here, the authors demonstrate that single-crystal graphene and hexagonal boron nitride films can be successfully grown on wafer-scale copper foils with tailored twin boundaries.
URI
https://scholarworks.unist.ac.kr/handle/201301/58656
URL
https://www.nature.com/articles/s41467-022-29451-w
DOI
10.1038/s41467-022-29451-w
ISSN
2041-1723
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CHM_Journal Papers
MSE_Journal Papers
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