Featured
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Letter |
Position and momentum mapping of vibrations in graphene nanostructures
Investigation of a free-standing graphene monolayer using a technique based on transmission electron microscopy allows identification of atomic vibrations characteristic of the bulk or the edge of the sample.
- Ryosuke Senga
- , Kazu Suenaga
- & Thomas Pichler
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Letter |
Molecular streaming and its voltage control in ångström-scale channels
Pressure-driven transport of aqueous salts through ångström-scale channels created from two-dimensional materials shows a transistor-like effect in which applying a tiny bias voltage can increase transport by up to 20 times.
- T. Mouterde
- , A. Keerthi
- & B. Radha
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Letter |
Electrically controlled water permeation through graphene oxide membranes
The rapid water transport through graphene oxide membranes can be switched off by introducing localized electric fields within the membranes that ionize surrounding water molecules and thus block transport.
- K.-G. Zhou
- , K. S. Vasu
- & R. R. Nair
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Letter |
Ion sieving in graphene oxide membranes via cationic control of interlayer spacing
Cations are used to control the interlayer spacing of graphene oxide membranes, enabling efficient and selective sieving of hydrated cations.
- Liang Chen
- , Guosheng Shi
- & Haiping Fang
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Letter |
Remote epitaxy through graphene enables two-dimensional material-based layer transfer
Conventional epitaxy is of limited application, but by placing a monolayer of graphene between the substrate and the so-called epilayer grown on top, its scope can be substantially extended.
- Yunjo Kim
- , Samuel S. Cruz
- & Jeehwan Kim
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Letter |
The evolving quality of frictional contact with graphene
Atomistic simulations reproduce experimental observations of transient frictional strengthening of graphene on an amorphous silicon substrate, an effect which diminishes as the number of graphene layers increases.
- Suzhi Li
- , Qunyang Li
- & Ju Li
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Letter |
Self-assembly of graphene ribbons by spontaneous self-tearing and peeling from a substrate
The controllable self-assembly of graphene ribbons on a substrate is shown, demonstrating an effect which could be applied to patterning and actuating devices made from two-dimensional materials.
- James Annett
- & Graham L. W. Cross
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Letter |
Graphene kirigami
The ratio of in-plane stiffness to out-of-plane bending stiffness of graphene is shown to be similar to that of a piece of paper, which allows ideas from kirigami (a variation of origami that allows cutting) to be applied to micrometre-scale graphene sheets to build mechanically stretchable yet robust electrodes, springs and hinges.
- Melina K. Blees
- , Arthur W. Barnard
- & Paul L. McEuen
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Letter |
Dislocations in bilayer graphene
Basal-plane dislocations, identified as fundamental defects in bilayer graphene by transmission electron microscopy and atomistic simulations, reveal striking size effects, most notably a pronounced buckling of the graphene membrane, which drastically alters the strain state and is of key importance for the material’s mechanical and electronic properties.
- Benjamin Butz
- , Christian Dolle
- & Erdmann Spiecker
Localization of lattice dynamics in low-angle twisted bilayer graphene