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We study the local and global roughness scaling in growth models with grains at the film surfaces. The local roughness, measured as a function of window size r, shows a crossover at a characteristic length r_c, from a rapid increase with…

统计力学 · 物理学 2007-05-23 T. J. Oliveira , F. D. A. Aarao Reis

The adsorption of metal atoms on nanostructures, such as graphene and nanotubes, plays an important role in catalysis, electronic doping, and tuning material properties. Quantum chemical calculations permit the investigation of this process…

介观与纳米尺度物理 · 物理学 2020-02-18 Christoph Rohmann , Maicol A. Ochoa , Michael Zwolak

In this report, we scrutinize the thickness dependent resistivity data from the recent literature on electrical transport measurements in topological insulators. A linear increase in resistivity with increase in thickness is expected in the…

强关联电子 · 物理学 2014-09-12 Sourabh Barua , K. P. Rajeev

This paper reports the study of growth kinetics of ion beam sputtered aluminum thin films. Dynamic scaling theory was used to derive the kinetics from AFM measurements. AFM imaging revealed that surface incorporates distinctly different…

材料科学 · 物理学 2015-06-23 Neha Sharma , K. Prabakar , S. Dash , A. K. Tyagi

Precision measurements of the microwave surface resistance $R_{s}$ of in situ $MgB_{2}$ films directly reveal an exponential behavior of $R_{s}$ at low temperature indicating a fully-gapped order parameter. The entire temperature dependence…

超导电性 · 物理学 2009-11-07 N. Hakim , C. Kusko , S. Sridhar , A. Soukiassian , X. H. Zeng , X. X. Xi , .

The electron inertia term and the off-diagonal electron pressure terms are well-known for the frozen-in condition breakdown in collisionless magnetic reconnection, which are naturally kinetic and difficult to be employed in…

等离子体物理 · 物理学 2025-06-12 H. W. Zhang , Z. W. Ma , T. Chen

We present results from molecular dynamics simulations of strictly two-dimensional (2D) polymer melts and thin polymer films in a slit geometry of thickness of the order of the radius of gyration. We find that the dynamics of the 2D melt is…

软凝聚态物质 · 物理学 2007-05-23 H. Meyer , T. Kreer , A. Cavallo , J. P. Wittmer , J. Baschnagel

Polymeric films with greater impact and ballistic resistance are highly desired for numerous applications, but molecular configurations that best address this need remain subject to debate. We study the resistance to ballistic impact of…

软凝聚态物质 · 物理学 2020-09-28 Andrea Giuntoli , Nitin K. Hansoge , Sinan Keten

The reflectance difference (RD) as a function of film thickness was measured during Pb deposition on Si(111)-(6x6)Au surface at 105 K. The oblique incident s- and p-polarized light with energy range 0.25-0.60 eV was used. The component of…

介观与纳米尺度物理 · 物理学 2016-08-15 M Stróżak , V Hnatyuk , M Jałochowski

In limited mobility (LM) models of thin film deposition, the final position of each atom or molecule is chosen according to a set of stochastic rules before the incidence of another atom or molecule. Here we investigate the possibility of a…

统计力学 · 物理学 2020-05-12 Tung B. T. To , Vitor B. de Sousa , Fábio D. A. Aarão Reis

Film boiling has practical applications in the current technology including steam power plants, cooling of electronic devices and emergency cooling systems. A finite difference/front tracking method is used to simulate film boiling at high…

流体动力学 · 物理学 2024-09-05 Saeed Mortazavi , Iman Yaali

We present results of molecular dynamics (MD) simulations for a non-entangled polymer melt confined between two completely smooth and repulsive walls, interacting with inner particles via the potential $U_{\rm wall}\myeq (\sigma/z)^9$,…

软凝聚态物质 · 物理学 2009-11-07 F. Varnik , J. Baschnagel , K. Binder

By studying the temperature-dependent behavior of electron thermal conductivity (k) in a 3.2 nm-thin film, we quantify the extremely confined defect-electron scattering and reveal the intrinsic phonon-electron scattering that is shared by…

介观与纳米尺度物理 · 物理学 2015-01-16 Zhe Cheng , Zaoli Xu , Shen Xu , Xinwei Wang

Direct Numerical Simulations (DNS) of turbulent channel flow at a shear Reynolds number of $Re_{*}=360$ for Newtonian and Herschel-Bulkley fluids in smooth and rough channels has been performed. The rough surface was made of irregular…

流体动力学 · 物理学 2023-12-11 C. Narayanan , S. Nauer , J. -S. Singh , R. Belt , T. Palermo , D. Lakehal

Striking features have been found in the nonlinear microwave (8 GHz) surface impedance $Z_s=R_s + jX_s$ of high-quality YBaCuO thin films with comparable low power characteristics [$R_{res}\sim 35--60 \mu\Omega$ and $\lambda_L(15 K)\sim…

超导电性 · 物理学 2009-10-31 A. P. Kharel , Anton V. Velichko , J. R. Powell , A. Porch , M. J. Lancaster , R. G. Humphreys

We numerically investigate the effects of fiber aspect ratio, roughness, flexibility, and flow inertia on the rheology of concentrated suspensions. We perform direct numerical simulations modeling the fibers, suspended in an incompressible…

流体动力学 · 物理学 2025-01-23 Monsurul Khan , Rishabh V. More , Arash Alizad Banaei , Luca Brandt , Arezoo M. Ardekani

At the molecular scale there are strong attractive interactions between surfaces, yet few macroscopic surfaces are sticky. Extensive simulations of contact by adhesive surfaces with roughness on nanometer to micrometer scales are used to…

材料科学 · 物理学 2014-03-05 Lars Pastewka , Mark O. Robbins

In this paper we give a survey of methods used to calculate values of resistance distance (also known as effective resistance) in graphs. Resistance distance has played a prominent role not only in circuit theory and chemistry, but also in…

组合数学 · 数学 2021-09-15 E. J. Evans , A. E. Francis

In this work, we have applied the self-compressed stabilized jellium model to predict the equilibrium properties of isolated thin Al, Na, and Cs slabs. To make a direct correspondence to atomic slabs, we have considered only those $L$…

材料科学 · 物理学 2015-05-13 T. Mahmoodi , M. Payami

Particles traveling at high velocities through microfluidic channels migrate from their starting streamlines due to inertial lift forces. Theories predict different scaling laws for these forces and there is little experimental evidence by…

流体动力学 · 物理学 2017-07-06 Kaitlyn Hood , Soroush Kahkeshani , Dino Di Carlo , Marcus Roper