Results 151 to 160 of about 6,887,616 (203)

Multicritical behaviour at surfaces

Zeitschrift f�r Physik B Condensed Matter, 1983
The critical behaviour of a semi-infiniten-vector model with a surface term (c/2) ∫dSφ2 is studied in 4-e dimensions near the special transition. It is shown that all critical surface exponents derive from bulk exponents and η∥, the anomalous dimension of the order parameter at the surface.
Diehl, Hans-Werner, Dietrich, Siegfried
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Amontonian frictional behaviour of nanostructured surfaces

Physical Chemistry Chemical Physics, 2011
With nanotextured surfaces and interfaces increasingly being encountered in technological and biomedical applications, there is a need for a better understanding of frictional properties involving such surfaces. Here we report friction measurements of several nanostructured surfaces using an Atomic Force Microscope (AFM).
Pilkington, G.A, Thormann, E, Claesson, P.M, Fuge, G.M, Fox, O.J.L, Ashfold, MNR, Leese, H, Mattia, M, Briscoe, W.H   +8 more
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Surface behaviour of Bacterium coli - I. The nature of the surface

Proceedings of the Royal Society of London. Series B - Biological Sciences, 1956
Abstract Using a microelectrophoretic method the zeta potentials of Bacterium coli suspended in a series of inorganic electrolytes having either a common anion or cation have been determined. By experiment, or extrapolation to zero potential of the curve of zeta potential against log10 [electrolyte concentration], it has been possible
J T, DAVIES, D A, HAYDON, E, RIDEAL
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Effect of the surface free energy on the behaviour of surface and guided waves

Ultrasonics, 2006
The aim of this paper is to evaluate the influence of the surface free energy upon the propagation of the eigenmodes of structures, by studying successively (a) the Rayleigh wave for an elastic half-space, (b) the Lamb waves for an elastic layer, and (c) the guided modes for a tri-layer structure (e.g., metal/adhesive/metal). The surface free energy is
Valentina Vlasie, Belloncle, Martine, Rousseau   +1 more
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Scaling behaviour of polished surfaces

Europhysics Letters (EPL), 1999
The polished surface of polycrystalline silver has been investigated using Scanning Tunneling Microscopy technique. The analysis of surface roughness shows anisotropic scaling behaviour. Different moments of height-height correlation indicate multifractality along the direction of grooves in contrast to self-affine behaviour in other directions.
C. V Dharmadhikari, R. B Kshirsagar, S. V Ghaisas   +2 more
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Deposition behaviour of progeny on surfaces

Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment, 2000
Abstract There are many publications on the deposition of radon progeny on surfaces, but majority of these works measured the airborne radon progeny concentration and then deduced the deposited progeny concentrations indirectly. In this work, direct depositions of 222 Rn progeny loaded aerosols on different wall coatings were monitored by ...
J.K.C. Leung, C.W. Ho, M.Y.W. Tso
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Behaviour of doubly connected minimal surfaces at the edges of the support surface

Archiv der Mathematik, 2001
The author investigates the properties of two-dimensional minimal surfaces in \(\mathbb{R}^3\) which are graphs over an annular region \(G\) in the \((x,y)\)-plane and which solve the following boundary problem: The outer boundary is a given fixed Jordan curve \(\Gamma\) which is a generalized graph over the outer boundary of \(G\), i.e.
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Cell behaviour on micropatterned surfaces

Biosensors and Bioelectronics, 1994
Abstract The local microenvironment of tissue cells has a profound influence on cell behaviour such as cell shape, guidance of movement, and so on. One approach to understanding this phenomenon, which is being applied by a number of groups, is to model possible cues using microfabrication technology.
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Singular behaviour of convex surfaces

2010
In the next two sections we shall see some results showing that, roughly speaking, the convexity properties of a surface evolving by mean curvature flow improve when a singularity is formed. We begin with the case of convex surfaces.
Manuel Ritoré, Carlo Sinestrari
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Ripples settle surface behaviour

Physics World, 2000
During one of his frequent trips to England, the 18th-century American author, scientist and diplomat, Benjamin Franklin, conducted a simple experiment on the pond at Clapham Common. One windy day, he poured a teaspoon of oil on the choppy water and saw that it had an instant calming effect as it spread over the surface.
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