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Roughness measurement of paper using speckle
(2011-09-02)
We present a method of measure of the roughness of the paper based on the analysis of a speckle pattern on the surface. Images of speckle over the surface of paper are captured by means of a simple configuration using a ...
Influence of the sign of the refractive index in the reflectivity of a metamaterial surface with localized roughness
(Springer, 2011-06)
To study the scattering properties of metamaterials, we generalize two scattering methods developed for conventional (non-magnetic) isotropic materials to the case of materials with arbitrary values (positive or negative) ...
Effect of concurrent geometry and roughness in interacting surfaces
(American Physical Society, 2015-02)
We study the interaction energy between two surfaces, one of them flat, the other describable as the composition of a small-amplitude roughness and a slightly curved, smooth surface. The roughness, represented by a spatially ...
Influence of roughness on the tribological behavior of a steel- steel couple lubricated with thread compound
(Planta Piloto de Ingeniería Química, 2019-07-31)
The purpose of this study is to determinate the influence of surface roughness on the tribological behavior of a lubricated steel against steel tribosystem. Tests were carried out at high pressure and slow sliding speed, ...
Degradation of the soil surface roughness by rainfall in two loess soils
(Elsevier Science, 2011-08)
The soil surface roughness is one of the main factors affecting wind erosion. Little is known about the influence of rains on the degradation rate of the soil surface roughness in different tillage systems and soil types. ...
Increased surface roughness in polydimethylsiloxane films by physical and chemical methods
(MDPI, 2017-08)
Two methods, the first physical and the other chemical, were investigated to modify the surface roughness of polydimethylsiloxane (PDMS) films. The physical method consisted of dispersing multi-walled carbon nanotubes ...
Effects of Spatial Sampling Interval on Roughness Parameters and Microwave Backscatter over Agricultural Soil Surfaces
(MDPI, 2016-05)
The spatial sampling interval, as related to the ability to digitize a soil profile with a certain number of features per unit length, depends on the profiling technique itself. From a variety of profiling techniques, ...
Far-field angular distribution of the mean scattered intensity from strong diffusers by means of a near-field intensity pattern
(Optical Society of America, 2010-04-01)
The speckle grain close to a diffuser medium carries information about the angles at which light is scattered. We propose the extension of a technique that allows obtaining the angular distribution of the scattered intensity ...
Methane Transport through Distorted Nanochannels: Surface Roughness Beats Tortuosity
(American Chemical Society, 2019-03)
Fluid transport through carbon nanotubes have shown remarkable flow properties, with measured flow rates orders of magnitude larger than the expected from standard continuum flow theories. Related studies have indicated ...