2D Metals by Repeated Size Reduction

Hanwen Liu; Hao Tang; Minghao Fang; Wenjie Si; Qinghua Zhang; Zhaohui Huang; Lin Gu; Wei Pan; Jie Yao; Cewen Nan; Hui Wu

doi:10.1002/adma.201601180

2D Metals by Repeated Size Reduction

Adv Mater. 2016 Oct;28(37):8170-8176. doi: 10.1002/adma.201601180. Epub 2016 Jul 15.

Authors

Hanwen Liu¹, Hao Tang², Minghao Fang², Wenjie Si¹, Qinghua Zhang³, Zhaohui Huang², Lin Gu³, Wei Pan¹, Jie Yao⁴, Cewen Nan¹, Hui Wu⁵

Affiliations

¹ State Key Laboratory of New Ceramics and Fine Processing, School of Materials Science and Engineering, Tsinghua University, Beijing, 100084, China.
² School of Materials Science and Technology, China University of Geosciences, Beijing, 100083, China.
³ Beijing National Laboratory for Condensed Matter Physics, Institute of Physics, Chinese Academy of Sciences, Beijing, 100190, China.
⁴ Department of Materials Science and Engineering, University of California, Berkeley, CA, 94720, USA.
⁵ State Key Laboratory of New Ceramics and Fine Processing, School of Materials Science and Engineering, Tsinghua University, Beijing, 100084, China. [email protected].

PMID: 27417413
DOI: 10.1002/adma.201601180

Abstract

A general and convenient strategy for manufacturing freestanding metal nanolayers is developed on large scale. By the simple process of repeatedly folding and calendering stacked metal sheets followed by chemical etching, free-standing 2D metal (e.g., Ag, Au, Fe, Cu, and Ni) nanosheets are obtained with thicknesses as small as 1 nm and with sizes of the order of several micrometers.

Keywords: 2D metals; mass-production; nanosheets; size reduction.