Nanomechanical cleavage of molybdenum disulphide atomic layers
書誌事項
- 公開日
- 2014-04-03
- 資源種別
- journal article
- 権利情報
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- https://www.springernature.com/gp/researchers/text-and-data-mining
- https://www.springernature.com/gp/researchers/text-and-data-mining
- DOI
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- 10.1038/ncomms4631
- 公開者
- Springer Science and Business Media LLC
説明
The discovery of two-dimensional materials became possible due to the mechanical cleavage technique. Despite its simplicity, the as-cleaved materials demonstrated surprising macro-continuity, high crystalline quality and extraordinary mechanical and electrical properties that triggered global research interest. Here such cleavage processes and associated mechanical behaviours are investigated by a direct in situ transmission electron microscopy probing technique, using atomically thin molybdenum disulphide layers as a model material. Our technique demonstrates layer number selective cleavage, from a monolayer to double layer and up to 23 atomic layers. In situ observations combined with molecular dynamics simulations reveal unique layer-dependent bending behaviours, from spontaneous rippling (5 atomic layers) to homogeneous curving (~ 10 layers) and finally to kinking (20 or more layers), depending on the competition of strain energy and interfacial energy.
収録刊行物
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- Nature Communications
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Nature Communications 5 (1), 3631-, 2014-04-03
Springer Science and Business Media LLC