The effect of silicon-oxide interface roughness on the weak-localization magnetoconductance of a silicon metal-oxide-semiconductor field-effect transistor in a magnetic field, tilted with respect to the interface, is studied. It is shown that an electron picks up a random Berry’s phase as it traverses a closed orbit. Effectively, due to roughness, the electron sees a uniform field parallel to t...

Surface roughness amplifies the water-repellency of hydrophobic materials. If the roughness geometry is, on average, isotropic then the shape of a sessile drop is almost spherical and the apparent contact angle of the drop on the rough surface is nearly uniform along the contact line. If the roughness geometry is not isotropic, e.g., parallel grooves, then the apparent contact angle is no longe...

Mean wind velocity profiles were measured by means of radio-windsondes over the Landes region in southwestern France, which consists primarily of pine forests with scattered villages and clearings with various crops. Analysis of neutral profiles indicated the existence of a logarithmic layer between approximately .z 4 = 67(*18)z, and 128(*32)z, (z is the height above the ground, z0 the surface ...

Determination of terrain data features in a high resolution terrain data model are required in a large variety of applications where visualization is an important aspect. This is a complex problem because a terrain model is generally a mapping of the reality into a continuous 3D surface model of arbitrary shape, requiring an extremely large amount of data especially when a high resolution is re...

Abstract This chapter attempts to provide an account of works that have attempted to characterize protein–protein interaction interfaces, with fractal dimension. However, such characterization of interfaces is not solely dependent upon interface roughness. Without involving the biophysical factors, we will concentrate only on geometric characterization of these interfaces. To be specific, we wi...

Abstract This chapter attempts to provide an account of works that have attempted to characterize protein–protein interaction interfaces, with fractal dimension. However, such characterization of interfaces is not solely dependent upon interface roughness. Without involving the biophysical factors, we will concentrate only on geometric characterization of these interfaces. To be specific, we wi...

Changes in the extent of local concavity along with changes in surface roughness of binding sites of proteins have long been considered as useful markers to identify functional sites of proteins. However, an algorithm that describes the connection between the simultaneous changes of these important parameters - eludes the students of structural biology. Here a simple yet general mathematical sc...

Miniature concave hollows, made by wet etching silicon through a circular mask, can be used as mirror substrates for building optical micro-cavities on a chip. In this paper we investigate how ICP polishing improves both shape and roughness of the mirror substrates. We characterise the evolution of the surfaces during the ICP polishing using white-light optical profilometry and atomic force mic...

Rough terrain control optimization for space rovers has become a popular and challenging research field. Improvements can be achieved concerning power consumption, reducing the risk of wheels digging in and increasing ability of overcoming obstacles. In this paper, we propose a terrain profiling and wheel speed adjustment approach based on terrain shape estimation. This terrain estimation is pe...