Results 41 to 50 of about 27,652 (282)

Quantum states and specific heat of low-density He gas adsorbed within the carbon nanotube interstitial channels: Band structure effects and potential dependence [PDF]

, 2002
We calculate the energy-band structure of a He atom trapped within the interstitial channel between close-packed nanotubes within a bundle and its influence on the specific heat of the adsorbed gas.
A. Thess, Antonio Šiber, E. Anglaret, F. Toigo, G. Stan, G. Stan, G. Stan, Hrvoje Buljan, J. Hone, J.C. Lasjaunias, J.W.G. Wildoer, M. Boninsegni, M.C. Vargas, M.M. Calbi, M.W. Cole, M.W. Cole, N. Garcia, N. Hamada, R.L. Siddon, W. Teizer, W. Teizer, W.E. Carlos, Y.H. Kahng   +22 more
core   +4 more sources

(In)commensurability, scaling and multiplicity of friction in nanocrystals and application to gold nanocrystals on graphite

, 2012
The scaling of friction with the contact size $A$ and (in)commensurabilty of nanoscopic and mesoscopic crystals on a regular substrate are investigated analytically for triangular nanocrystals on hexagonal substrates. The crystals are assumed to be stiff,
A. S. de Wijn, S. Aubry, Y. I. Frenkel
core   +1 more source

Static and dynamic friction in sliding colloidal monolayers [PDF]

, 2012
In a pioneer experiment, Bohlein et al. realized the controlled sliding of two-dimensional colloidal crystals over laser-generated periodic or quasi-periodic potentials.
A. Vanossi, Bohlein, Bohlein, Bruschi, Bruschi, Carpick, Castelli, Cieplak, Coffey, Dienwiebel, E. Tosatti, Filippov, Krim, Lomdahl, Mangold, Mikhael, N. Manini, Reichhardt, Reichhardt, Rubinstein, Urbakh, Vanossi, Vanossi, Vanossi   +23 more
core   +1 more source

The Realization of Multidirectional, Free‐Standing 3D Plasmonic Nanostructures via 3D Nanoprinting: A Case Study of Fractal Antennas

Advanced Functional Materials, EarlyView.
Free‐standing plasmonic gold‐based fractal antennas are fabricated by 3D nanoprinting, employing focused electron beam induced deposition and an optimized purification method to remove carbon while conserving structural fidelity. Simulation and experiment show broadband plasmonic activity, including customizable polarizability, thereby paving the way ...
Verena Reisecker, Robert Winkler, Ulrich Hohenester, Evelin Fisslthaler, Daniel Knez, Gerald Kothleitner, Georg Haberfehlner   +6 more
wiley   +1 more source

Cause Analysis of Rail Corrugation in Metro Lines Based on System Vibration Characteristics

Chinese Journal of Mechanical Engineering
The mechanism of rail corrugation remains unclear, and the research methods require improvement. The vibration characteristics represent the system’s external manifestations, but a comprehensive analysis is still lacking.
Zhiqiang Wang, Zhenyu Lei, Yanyun Luo
doaj   +1 more source

New Insights into the Short Pitch Corrugation Enigma Based on 3D-FE Coupled Dynamic Vehicle-Track Modeling of Frictional Rolling Contact

Applied Sciences, 2017
A three-dimensional (3D) finite element (FE) dynamic frictional rolling contact model is presented for the study of short pitch corrugation that considers direct and instantaneous coupling between the contact mechanics and the structural dynamics in a ...
Shaoguang Li, Zili Li, Alfredo Núñez, Rolf Dollevoet   +3 more
doaj   +1 more source

Measurement methods and analysis tools for rail irregularities. A case study for urban tram track [PDF]

, 2015
Rail irregularities, in particular for urban railway infrastructures, are one of the main causes for the generation of noise and vibrations. In addition, repetitive loading may also lead to decay of the structural elements of the rolling stock.
Chiacchiari, Laura, Loprencipe, Giuseppe
core   +2 more sources

Local Thermal Conductivity Patterning in Rotating Lattice Crystals of Anisotropic Sb2S3

Advanced Functional Materials, EarlyView.
Microscale control of thermal conductivity in Sb2S3 is demonstrated via laser‐induced rotating lattice crystals. Thermal conductivity imaging reveals marked thermal transport anisotropy, with the c axis featuring amorphous‐like transport, whereas in‐plane directions (a, b) exhibit 3.5x and 1.7x larger thermal conductivity.
Eleonora Isotta, Rosemary Wynnychenko, Binayak Mukherjee, Jack Kaman, Hrushikesh Sahasrabuddhe, Jiongzhi Zheng, Anubhav Jain, Geoffroy Hautier, Alexandra Zevalkink, Evan Musterman, Volkmar Dierolf, Himanshu Jain, G. Jeffrey Snyder, Oluwaseyi Balogun   +13 more
wiley   +1 more source

Effect of solid phase corrugation on the thermo-mechanical properties of low density flexible cellular polymers

Materials & Design, 2019
This manuscript presents the effect of the solid phase corrugation of low density flexible cellular polymers on both their mechanical and thermal properties.
S. Pérez-Tamarit, E. Solórzano, A. Hilger, I. Manke, M.A. Rodríguez-Pérez   +4 more
doaj   +1 more source

Parallel and Perpendicular Lamellae on Corrugated Surfaces

, 2003
We consider the relative stability of parallel and perpendicular lamellar layers on corrugated surfaces. The model can be applied to smectic phases of liquid crystals, to lamellar phases of short-chain amphiphiles and to lamellar phases of long-chain ...
Andelman, David, Tsori, Yoav
core   +1 more source