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Electron transport in bilayer graphene is studied by using a first principles analysis and theMonte Carlo simulation under conditions relevant to potential applications. While the intrinsic properties are found to be much less desirable in…

介观与纳米尺度物理 · 物理学 2015-05-30 X. Li , K. M. Borysenko , M. Buongiorno Nardelli , K. W. Kim

We employ dual-gated 30{\deg}-twisted bilayer graphene to demonstrate simultaneous ultra-high mobility and conductivity (up to 40 mS at room temperature), unattainable in a single-layer of graphene. We find quantitative agreement with a…

介观与纳米尺度物理 · 物理学 2022-01-12 Giulia Piccinini , Vaidotas Mišeikis , Kenji Watanabe , Takashi Taniguchi , Camilla Coletti , Sergio Pezzini

We reported the basal-plane thermal conductivity in exfoliated bilayer hexagonal boron nitride h-BN that was measured using suspended prepatterned microstructures. The h-BN sample suitable for thermal measurements was fabricated by…

介观与纳米尺度物理 · 物理学 2016-06-28 Chengru Wang , Jie Guo , Lan Dong , Adili Aiyiti , Xiangfan Xu , Baowen Li

A new method is proposed for the analysis of specular and off-specular reflectivity from supported lipid bilayers. Both thermal fluctuations and the "static" roughness induced by the substrate are carefully taken into account. Examples from…

软凝聚态物质 · 物理学 2009-10-08 Linda Malaquin , Thierry Charitat , Jean Daillant

A fluid model is developed for multicomponent two-temperature magnetized plasmas in chemical non-equilibrium from the partially- to fully-ionized collisional regimes. We focus on transport phenomena aiming at representing the chromosphere…

The synthesis of wafer-scale two-dimensional amorphous carbon monolayers has been recently demonstrated. This material presents useful properties when integrated as coating of metals, semiconductors or magnetic materials, such as enabling…

材料科学 · 物理学 2020-12-03 Aleandro Antidormi , Luciano Colombo , Stephan Roche

In conductor-insulator composites in which the conducting particles are dispersed in an insulating continuous matrix the electrical connectedness is established by interparticle quantum tunneling. A recent formulation of the transport…

无序系统与神经网络 · 物理学 2015-05-20 B. Nigro , G. Ambrosetti , C. Grimaldi , T. Maeder , P. Ryser

We present a theoretical study of electronic and thermal transport in polycrystalline heterostructures combining graphene (G) and hexagonal boron nitride (hBN) grains of varying size and distribution. By increasing the hBN grain density…

介观与纳米尺度物理 · 物理学 2025-06-06 J. E. Barrios Vargas , B. Mortazavi , A. W. Cummings , R. Martinez-Gordillo , M. Pruneda , L. Colombo , T. Rabczuk , S. Roche

Borophene, an atomically thin, corrugated, crystalline two-dimensional boron sheet, has been recently synthesized. We investigate mechanical properties and lattice thermal conductivity of borophene via reactive molecular dynamics…

材料科学 · 物理学 2017-07-05 Bohayra Mortazavi , Minh-Quy Le , Timon Rabczuk , Luiz Felipe C. Pereira

We analyze the thermal fluctuations of particles that have a short-range dipolar attraction and a long-range repulsion. In an inhomogeneous particle density region, or "soft phase," filamentary patterns appear which are destroyed only at…

介观与纳米尺度物理 · 物理学 2009-11-10 C. J. Olson Reichhardt , C. Reichhardt , A. R. Bishop

The structural and thermal properties of bulk Td-WTe2 have been studied by using first-principles calculations. We find that the lattice thermal conductivity of WTe2 is anisotropic, with the highest value along a-axis and lowest one along…

介观与纳米尺度物理 · 物理学 2016-03-23 Gang Liu , Hong Yi Sun , Jian Zhou , Qing Fang Li , X. G. Wan

Extensive Langevin dynamics simulations are used to characterize the adsorption transition of a flexible magnetic filament grafted onto an attractive planar surface. Our results identify different structural transitions at different ratios…

In this first-principles study, we investigated the thermoelectric properties of the full-Heusler compound CsK$_2$Sb at different compressive strains. This material exhibits a valence band structure with significant effective mass…

材料科学 · 物理学 2025-05-14 Øven A. Grimenes , G. Jeffrey Snyder , Ole M. Løvvik , Kristian Berland

We have studied the magnetotransport of conical and disk-shaped nanocarbon particles in magnetic fields $\left|B\right|\leq9\:\mathrm{T}$ at temperatures $2\leq T\leq300\:\mathrm{K}$ to characterize electron scattering in a three…

介观与纳米尺度物理 · 物理学 2014-07-28 Jozef Černák , Geir Helgesen , Fredrik Sydow Hage , Jozef Kováč

The thermophysical properties of supported and free-standing nanomaterials would be different due to the substrate effect. To determine the thermophysical properties of supported 2D nanomaterials, this paper developed a two-step…

仪器与探测器 · 物理学 2021-09-02 Aoran Fan , Haidong Wang , Weigang Ma , Xing Zhang

In this article we discuss in detail the effective approaches to enhance the thermal conductivity in polymer composites. It is shown from numerical simulations that maximizing interfacial area between filler and polymer enhances very…

应用物理 · 物理学 2020-06-02 Vijendra Kumar , Abhishek Barnwal , R. K. Shukla , Jyoti Shakya

Characterizing the surface material of an asteroid is important for understanding its geology and for informing mission decisions, such as the selection of a sample site. Diurnal surface temperature amplitudes are directly related to the…

地球与行星天体物理 · 物理学 2020-02-25 Andrew J. Ryan , Daniel Pino Muñoz , Marc Bernacki , Marco Delbo

Magnetic proximity effect of a topological insulator in contact with a ferromagnet is reported in thin film bilayers of 15 nm thick $BiSbTe_3$ on either 15 or 40 nm thick $SrRuO_3$ on (100) $SrTiO_3$ wafers. Magneto transport results of the…

强关联电子 · 物理学 2018-02-14 Gad Koren

The multiscale flow structure in the solar convection zone - the coexistence of such features as the granules, mesogranules, supergranules and giant cells - has not yet been properly understood. Here, the possible role of one physical…

太阳与恒星天体物理 · 物理学 2018-02-15 O. V. Shcheritsa , A. V. Getling , O. S. Mazhorova

We present experiments on several distinct effective temperatures in a granular system at a sequence of increasing packing densities and at a sequence of decreasing driving rates. This includes single-grain measurements based on the…

软凝聚态物质 · 物理学 2009-01-05 A. R. Abate , D. J. Durian