In addition, being embedded in a few layer insulator, barrier defects reside at nanometer proximity to both source and drain. Fig. 1: Tunneling through quantum dots. a A schematic illustration of the device. The quantum dots are present within the hBN layer between graphite and graphene. b ...
Graphene oxide (GO) is a two-dimensional material obtained from the oxidative exfoliation of graphite. Graphene and GO have become one of the most attractive materials for the following reasons: (1) large surface area; (2) lightweight; (3) high strength and electrical conductivity; (4) the ...
self-supporting (Figs.6and7, Supplementary Figs.2and3), and transfer to solid substrates can be directed to build monolayers (Fig.6and Supplementary Fig.2) or multilayers analogous to graphite (Fig.7). We have not detected the metallic conductivity predicted15for...
usually refers to single-layer graphene. Graphene is a parent form of all graphitic structures of carbon:graphite, which is a three-dimensionalcrystalconsisting of relatively weakly coupled graphene layers;nanotubes, which may be represented as scrolls of graphene; andbuckyballs, sphericalmoleculesmade ...
Atomic lattice structure of a graphene sheet (or a graphene nanoribbon) with the zigzag edges on top and bottom. The atomic structure of graphene is similar to the structure of graphite (Fig. 3.2), although it has the single layer structure, as opposed to many layers in graphite. Graphene ...
The exceptional properties of graphene and its potential different applications have led to the development of composite materials that include few-layer-graphene (FLG), ultrathin graphite, graphene oxide (GO), reduced graphene oxide (rGO), and graphene nanosheets (GNS), comprising a broad set of...
Theoretically, graphene grain boundaries are predicted to have distinct electronic, magnetic, chemical and mechanical properties that strongly depend on their atomic arrangement. Yet because of the five-order-of-magnitude size difference between grains and the atoms at grain boundaries, few experiments ...
The friction contrast between single and bilayer graphene arises from a dramatic difference in electron-phonon coupling, which we discovered by means of angle-resolved photoemission spectroscopy. Bilayer graphene as a lubricant outperforms even graphite due to reduced adhesion....
Graphene has opened a new arena in the field of two-dimensional condensed matter physics since its first isolation from graphite by means of micromechanical exfoliation1,2,3. Based on fascinating properties, graphene provides a radically new platform for future electronic and photonic science and tech...
This work proposes a novel design composed of graphene nanoribbons-based optofluidic tweezers to manipulate and sort bio-particles with radii below 2.5 nm. The suggested structure has been numerically investigated by the finite difference time domai