Results 41 to 50 of about 99,809 (151)

An Analysis on Factors of Surface Transversal Cracks of Steel 65Mn 2.5 mm x 10 mm Flat Wire and Process Improvement

Teshugang, 2017
The surface transversal cracks occur on steel 65Mn (/%： 0.65C, 0.24Si, 1. 00Mn, 0.014P, 0.006S) 2.5mm X 10mm flat wire cold-drawn and rolled by φ6.5mm Coil.
贾旭岗, 杨晓奇, 梁世勇
doaj  

Dissipative Van der Waals interaction between a small particle and a metal surface

, 2006
We use a general theory of the fluctuating electromagnetic field to calculate the friction force acting on a small neutral particle, e.g., a physisorbed molecule, or a nanoscale object with arbitrary dispersive and absorptive dielectric properties ...
A. A. Kyasov, A. Dayo, A. I. Volokitin, A. I. Volokitin, A. I. Volokitin, A. I. Volokitin, A. I. Volokitin, A. I. Volokitin, A. Majumdar, B. C. Stipe, B. Gotsmann, B. N. J. Persson, B. N. J. Persson, B. N. J. Persson, B. N. J. Persson, D. Polder, E. M. Lifshitz, E. T. Watts, G. V. Dedkov, I. Dorofeyev, I. Dorofeyev, J. B. Pendry, J. B. Pendry, M. L. Levin, P. Johansson, S. Tomassone, T. J. Gramila, T. J. Gramila, T. J. Gramila, T. J. Gramila, U. Hartmann, U. Hartmann   +31 more
core   +1 more source

Fluctuating shells under pressure

, 2012
Thermal fluctuations strongly modify the large length-scale elastic behavior of crosslinked membranes, giving rise to scale-dependent elastic moduli. While thermal effects in flat membranes are well understood, many natural and artificial microstructures
Gompper, Gerhard, Nelson, David R., Paulose, Jayson, Vliegenthart, Gerard A.   +3 more
core   +1 more source

Entropic forces exerted on a rough wall by a grafted semiflexible polymer

, 2014
We study the entropic force due to a fluctuating semiflexible polymer that is grafted from one end and confined by a rigid and rough wall from the other end. We show how roughness of the wall modifies the entropic force.
Bayati, Parvin, Ghassab, Leila, Najafi, Ali   +2 more
core   +1 more source

Rubber friction on smooth surfaces

, 2006
We study the sliding friction for viscoelastic solids, e.g., rubber, on hard flat substrate surfaces. We consider first the fluctuating shear stress inside a viscoelastic solid which results from the thermal motion of the atoms or molecules in the solid.
A. I. Volokitin, B. N. J. Persson, Baumberger, Casoli, Chernyak, Filippov, Gal, Grosch, Klüppel, Persson, Persson, Persson, Persson, Persson, Persson, Persson, Persson, Roberts, Schallamach, Schallamach, Tartaglino, vibrations, Vorvolakos, Williams   +23 more
core   +1 more source

The XY Model on a Dynamical Random Lattice [PDF]

, 1993
We study the XY model on a lattice with fluctuating connectivity. The expectation is that at an appropriate critical point such a system corresponds to a compactified boson coupled to 2d quantum gravity.
Ambjørn, Boulatov, Boulatov, Catterall, Catterall, David, Distler, Gross, Gross, Gupta, Itzykson, John B. Kogut, Knizhnik, Kosterlitz, Kosterlitz, Ray L. Renken, Simon M. Catterall, Teper, Thorleifsson, Wolff, Wolff   +20 more
core   +4 more sources

Near-field heat transfer in a scanning thermal microscope

, 2011
We present measurements of the near-field heat transfer between the tip of a thermal profiler and planar material surfaces under ultrahigh vacuum conditions.
Achim Kittel, Daniel Reddig, E. M. Lifshitz, J. Bass, J.-P. Mulet, J. L. Pan, J. L. Pan, Jürgen Parisi, Martin Holthaus, N. W. Ashcroft, S. Adachi, S. M. Rytov, Svend-Age Biehs, V. Ginzburg, Wolfgang Müller-Hirsch   +14 more
core   +1 more source

Heating of trapped atoms near thermal surfaces [PDF]

, 1999
We study the electromagnetic coupling and concomitant heating of a particle in a miniaturized trap close to a solid surface. Two dominant heating mechanisms are identified: proximity fields generated by thermally excited currents in the absorbing solid ...
Henkel, Carsten, Wilkens, Martin
core   +5 more sources

Fluctuating pressures in flow fields of jets [PDF]

The powered lift configurations under present development for STOL aircraft are the externally blown flap (EBF), involving direct jet impingement on the aircraft flaps, and the upper surface blown (USB), where the jet flow is attached on the upper ...
Haviland, J. K., Schroeder, J. C.
core   +1 more source

An experimental investigation of the recirculation zone formed downstream of a forward facing step [PDF]

, 2010
An experimental investigation of the recirculation zone formed downstream of a forward facing step immersed in a turbulent boundary layer has been undertaken using particle image velocimetry.
Lo Jacono, David, Sheridan, John, Sherry, Michael   +2 more
core   +2 more sources