Showing papers in "Solid State Communications in 2012"

TL;DR: In this paper, the use of liquid-phase-exfoliated graphene and multilayer graphene as fillers in the thermal interface materials has been discussed, and it has been demonstrated that the addition of an optimized mixture of graphene and multi-layer graphene to the composites with different matrix materials produces the record-high enhancement of the effective thermal conductivity at the small filler loading fraction (f≤10vol%).

TL;DR: In this article, the authors outline the current understanding of two general aspects of optical response of graphene: optical absorption and light emission, and show that optical absorption in graphene is dominated by intraband transitions at low photon energies and by interband transitions at higher energies (from mid-infrared to ultraviolet).

TL;DR: In this paper, the electronic structure of a single MoS2 monolayer is investigated with all electron first-principles calculations based on Kohn Sham Density Functional Theory and variational treatment of spin-orbital coupling.

TL;DR: In this article, the photocatalytic activity of pure and Cu-doped ZnO samples was studied by the photodegradation of resazurin (Rz) dye.

TL;DR: In this article, the authors describe the fabrication and characterization of high-quality exfoliated mono-and bilayer graphene devices on single-crystal hBN substrates, using a mechanical transfer process.

TL;DR: In this paper, a review of the current understanding of phonon transport in graphene is discussed along with associated experimental and theoretical investigation techniques, and a comprehensive theoretical model of coupled phonon and electron transport across the highly anisotropic and dissimilar interface is established.

TL;DR: In this paper, the influence of Mn doping on structural, dielectric, magnetic, magnetoelectric and optical properties of BiFeO3 nanoparticles was studied. And in order to explore the optical properties, their photoluminescent properties were also investigated.

TL;DR: A review of recent experimental and theoretical advances in the understanding of graphene adhesion can be found in this paper, where the authors organize their discussion into experimental, theoretical, and experimental efforts directed toward: graphene conformation to a substrate, determination of adhesion energy, and applications where graphene-based adhesion plays an important role.

TL;DR: In this article, the effects of nitrogen atom substitution and curvature on the thermal conductivity of graphene were studied using non-equilibrium molecular dynamics simulations using the optimized Tersoff potential proposed by Lindsay and Broido.

TL;DR: In this paper, a study of resonant Raman spectroscopy of the as-grown graphene on copper foils is presented, where different laser energies have been used to excite the sample, in order to obtain the dependence of the Raman features (intensities, frequencies and line widths) on the laser energy.

TL;DR: In this article, the authors investigated the second-harmonic generation in semi-parabolic and semi-inverse squared quantum wells under the compact-density-matrix approach and iterative method.

TL;DR: In this paper, the effects of boron atoms substitution on the thermal conductivity and mechanical properties of single-layer graphene using the non-equilibrium molecular dynamics simulations were investigated.

TL;DR: In this paper, the structural, elastic and electronic properties of two typical strengthening precipitates, namely θ (Al2Cu) and S (Al 2CuMg), in Al-Cu-Mg series alloys are investigated.

TL;DR: In this paper, two new carbon allotropes (H-carbon and S-carbon) are proposed, as possible candidates for the intermediate superhard phases between graphite and diamond obtained in the process of cold compressing graphite, based on the results of first-principles calculations.

TL;DR: The growth of single-layer graphene nanometer size domains by solid carbon source molecular beam epitaxy on hexagonal boron nitride (h-BN) flakes is demonstrated in this paper.

TL;DR: In this paper, the authors discuss the unique capabilities afforded by the use of graphene as a sample support for electron microscopy, and discuss the applications adapting graphene to their benefit, as an increasing number of applications adapting Graphene to their advantage emerge.

TL;DR: Graphene is a two-dimensional metallic membrane, and deformation of the membrane, i.e., strains and topological defects of the crystalline lattice, couple to the electrons in the same way as external gauge fields as mentioned in this paper.

TL;DR: In this paper, a family of rare-earth orthoferrites, SmFeO3, exhibits temperature-induced magnetization reversal below the critical low-temperature along the a-axis of Pbnm symmetry.

TL;DR: In this article, the multicaloric effect in multiferroic materials was theoretically introduced for the first time, which is defined as the adiabatic reversible temperature change caused by electric or magnetic fields.

TL;DR: In this article, a theoretical review of quantum transport properties in disordered graphene-based materials is presented, in particular specific effects induced by short versus long range scattering on the minimum conductivity, weak (anti-)localization, and strongly insulating regimes are discussed in depth.

TL;DR: In this article, the conductivity and dielectric response of thin films of poly(ethylene oxide) (PEO) blend with lithium hexafluorophosphate (LiPF 6 ) salt and ethylene carbonate (EC) as plasticiser and carbon nanotube (CNT) as filler, are prepared using solution casting method.

TL;DR: In this article, phase diagrams of as-grown and O 2 -annealed FeTe 1− x Se x determined from magnetic susceptibility measurement were obtained, and it was shown that Oxygen probably plays a key role in the suppression of the magnetic order and the appearance of bulk superconductivity.

TL;DR: In this paper, the authors showed that the barrier of Li ions diffusion along the one dimensional channel in both LiFePO 4 and FePO 4 phases can be effectively reduced by vanadium doping.

TL;DR: In this paper, the magnetization and susceptibility of a cylindrical core/shell spin-1 Ising nanowire are investigated within the effective field theory with correlations for both ferromagnetic and antiferromagnetic exchange interactions between the shell and the core.

TL;DR: In this article, the relationship between crystal structure and superconductivity in iron-based superconductors was studied and the superconducting phase diagram was established as a function of the oxygen deficient content which was determined by Rietveld refinement.

TL;DR: In this paper, the origin of ferroelectricity was investigated based on non-centrosymmetric magnetic ordering and disorder by carrying out first-principles calculations with pyroelectric measurements.

TL;DR: In this paper, a brief review is given on nanoscale and edge effect on electronic properties of graphene from theoretical point of view The presence of edges in graphene has strong implications for low-energy spectrum of the π electrons.

TL;DR: In this paper, the lattice thermal transport across the asymmetric tilt grain boundary between armchair and zigzag graphene by nonequilibrium molecular dynamics (NEMD) was investigated.

TL;DR: In this paper, the location and bandwidth of flatbands and photonic band gaps can be tuned by the external magnetic field with the help of plane wave expansion (PW) method.

TL;DR: In this article, a review of electronic quantum interference in mesoscopic ring structures based on graphene is presented, with a focus on the interplay between the Aharonov-Bohm effect and the peculiar electronic and transport properties of this material.