نتایج جستجو برای: single layered graphene sheets

تعداد نتایج: 967753  

A. Ghorbanpour-Arani, M. Shokravi

This paper is concerned with the surface and small scale effects on transverse vibration of a viscoelastic single-layered graphene sheet (SLGS) subjected to an in-plane magnetic field. The SLGS is surrounded by an elastic medium which is simulated as Visco-Pasternak foundation. In order to investigate the small scale effects, the nonlocal elasticity theory is employed due to its simplicity and ...

2014
Daria A. Smirnova Ilya V. Shadrivov Alexander I. Smirnov Yuri S. Kivshar

O R IG IN A L P A P ER Abstract Nonlinear properties of a multi-layer stack of graphene sheets are studied. It is predicted that such a structure may support dissipative plasmon-solitons generated and supported by an external laser radiation. Novel nonlinear equations describing spatial dynamics of the nonlinear plasmons driven by a plane wave in the Otto configuration are derived and the exist...

2017
Al-Sayed Al-Sherbini Mona Bakr Iman Ghoneim Mohamed Saad

Graphene sheets have been exfoliated from bulk graphite using high energy wet milling in two different solvents that were 2-ethylhexanol and kerosene. The milling process was performed for 60 h using a planetary ball mill. Morphological characteristics were investigated using scanning electron microscope (SEM) and transmission electron microscope (TEM). On the other hand, the structural charact...

Journal: :Nature nanotechnology 2008
Mhairi H Gass Ursel Bangert Andrew L Bleloch Peng Wang Rahul R Nair A K Geim

Research interest in graphene, a two-dimensional crystal consisting of a single atomic plane of carbon atoms, has been driven by its extraordinary properties, including charge carriers that mimic ultra-relativistic elementary particles. Moreover, graphene exhibits ballistic electron transport on the submicrometre scale, even at room temperature, which has allowed the demonstration of graphene-b...

2007
Wang-Kong Tse Ben Yu-Kuang Hu S. Das Sarma

We study the Coulomb drag between two single graphene sheets in intrinsic and extrinsic graphene systems with no interlayer tunneling. The general expression for the nonlinear susceptibility appropriate for single-layer graphene systems is derived using the diagrammatic perturbation theory, and the corresponding exact zerotemperature expression is obtained analytically. We find that, despite th...

1999
W. Clauss D. J. Bergeron M. Freitag C. L. Kane E. J. Mele A. T. Johnson

– Single-wall carbon nanotubes, seamless cylindrical molecules formed from a graphene sheet, are either conducting or semiconducting, depending on the particular “wrapping vector” that defines the waist of the tube. Scanning tunneling microscopy experiments have tested this idea by simultaneously measuring a tube’s lattice structure and electronic properties. Here we present a series of STM ima...

A Ghorbanpour Arani, R Kolahchi S.M.R Allahyari

One of the most promising materials in nanotechnology such as sensors, actuators and resonators is annular Boron Nitride sheets (ABNSs) due to excelled electro-thermo-mechanical properties. In this study, however, differential quadrature method (DQM) and nonlocal piezoelasticity theory are used to investigate the nonlinear vibration response of embedded single-layered annular Boron Nitride shee...

Journal: :Nanoscale 2015
Fancy Qian Wang Shunhong Zhang Jiabing Yu Qian Wang

Motivated by the recent study of inspiring thermoelectric properties in bulk SnSe [Zhao et al., Nature, 2014, 508, 373] and the experimental synthesis of SnSe sheets [Chen et al., J. Am. Chem. Soc., 2013, 135, 1213], we have carried out systematic calculations for a single-layered SnSe sheet focusing on its stability, electronic structure and thermoelectric properties by using density functiona...

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