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Surface charge — is the electric charge present at an interface, for instance on the surface of a semiconductor material, or for example, on the surface of a protein in water.There are multiple factors generating surface charge. First of all, surface charge… … Wikipedia
Electric surface charge — appears practically always on an object surface when it is placed into a fluid. All fluids contain ions, positive (cations) and negative (anions). These ions interact with the object surface. This interaction might lead to adsorption some of them … Wikipedia
Surface science — is the study of physical and chemical phenomena that occur at the interface of two phases, including solid liquid interfaces, solid gas interfaces, solid vacuum interfaces, and liquid gas interfaces. It includes the fields of surface chemistry… … Wikipedia
Surface conductivity — is an additional electric conductivity of fluid in the vicinity of the charged surface. Fluid conductivity is associated with ions motion in electric field. Concentration of ions is higher close to the charged surfaces. They are attracted there… … Wikipedia
Charge density — The linear, surface, or volume charge density is the amount of electric charge in a line, surface, or volume, respectively. It is measured in coulombs per meter (C/m), square meter (C/m²), or cubic meter (C/m³), respectively, and represented by… … Wikipedia
Surface enhanced Raman spectroscopy — Surface Enhanced Raman Spectroscopy, or Surface Enhanced Raman Scattering, often abbreviated SERS, is a surface sensitive technique that results in the enhancement of Raman scattering by molecules adsorbed on rough metal surfaces. The enhancement … Wikipedia
Surface photovoltage — (SPV) measurements are a widely used method to determine the minority carrier diffusion length of semiconductors. Since the transport of minority carriers determines the behavior of the p n junctions that are ubiquitous in semiconductor devices,… … Wikipedia
Surface reconstruction — refers to the process by which atoms at the surface of a crystal assume a different structure than that of the bulk. Surface reconstructions are important in that they help in the understanding of surface chemistry for various materials,… … Wikipedia
Surface plasmon — Surface plasmons, also referred to in the literature as surface plasma polaritons, are fluctuations in the electron density at the boundary of two materials. Plasmons are the collective vibrations of an electron gas (or plasma) surrounding the… … Wikipedia
Charge Creuse — Une charge creuse moderne contient un cylindre doté d une charge en forme de cône inversé (3) recouverte d une coiffe métallique (1) améliorant l aérodynamisme et déterminant la distance de déclenchement optimale. Cette coiffe porte à son… … Wikipédia en Français
Charge D'espace — La charge d espace est un nuage d électrons, situé dans un espace qui peut être, un vide, un gaz, un liquide ou un solide. Bien que le plus souvent cet effet soit rencontré dans le vide avec les tubes électroniques. Dans le vide Lorsqu un objet… … Wikipédia en Français
