BROWSE

Related Scientist

CMCM's photo.

CMCM
다차원 탄소재료 연구단
more info

ITEM VIEW & DOWNLOAD

Seeded growth of large single-crystal copper foils with high-index facets

Cited 0 time in webofscience Cited 0 time in scopus
44 Viewed 0 Downloaded
Title
Seeded growth of large single-crystal copper foils with high-index facets
Author(s)
Muhong Wu; Zhibin Zhang; Xiaozhi Xu; Zhihong Zhang; Yunrui Duan; Jichen Dong; Ruixi Qiao; Sifan You; Li Wang; Jiajie Qi; Dingxin Zou; Nianze Shang; Yubo Yang; Hui Li; Lan Zhu; Junliang Sun; Haijun Yu; Peng Gao; Xuedong Bai; Ying Jiang; Zhu-Jun Wang; Feng Ding; Dapeng Yu; Enge Wang; Kaihui Liu
Subject
Vapor Deposition, ; Graphite, ; Low Energy Electron Diffraction
Publication Date
2020-05
Journal
NATURE, v.581, no.7809, pp.406 - 410
Publisher
NATURE PUBLISHING GROUP
Abstract
© 2020, The Author(s), under exclusive licence to Springer Nature Limited. The production of large single-crystal metal foils with various facet indices has long been a pursuit in materials science owing to their potential applications in crystal epitaxy, catalysis, electronics and thermal engineering1–5. For a given metal, there are only three sets of low-index facets ({100}, {110} and {111}). In comparison, high-index facets are in principle infinite and could afford richer surface structures and properties. However, the controlled preparation of single-crystal foils with high-index facets is challenging, because they are neither thermodynamically6,7 nor kinetically3 favourable compared to low-index facets6–18. Here we report a seeded growth technique for building a library of single-crystal copper foils with sizes of about 30 × 20 square centimetres and more than 30 kinds of facet. A mild pre-oxidation of polycrystalline copper foils, followed by annealing in a reducing atmosphere, leads to the growth of high-index copper facets that cover almost the entire foil and have the potential of growing to lengths of several metres. The creation of oxide surface layers on our foils means that surface energy minimization is not a key determinant of facet selection for growth, as is usually the case. Instead, facet selection is dictated randomly by the facet of the largest grain (irrespective of its surface energy), which consumes smaller grains and eliminates grain boundaries. Our high-index foils can be used as seeds for the growth of other Cu foils along either the in-plane or the out-of-plane direction. We show that this technique is also applicable to the growth of high-index single-crystal nickel foils, and we explore the possibility of using our high-index copper foils as substrates for the epitaxial growth of two-dimensional materials. Other applications are expected in selective catalysis, low-impedance electrical conduction and heat dissipation
URI
https://pr.ibs.re.kr/handle/8788114/7866
DOI
10.1038/s41586-020-2298-5
ISSN
0028-0836
Appears in Collections:
Center for Multidimensional Carbon Materials(다차원 탄소재료 연구단) > 1. Journal Papers (저널논문)
Files in This Item:
There are no files associated with this item.

qrcode

  • facebook

    twitter

  • Items in DSpace are protected by copyright, with all rights reserved, unless otherwise indicated.
해당 아이템을 이메일로 공유하기 원하시면 인증을 거치시기 바랍니다.

Items in DSpace are protected by copyright, with all rights reserved, unless otherwise indicated.

Browse