Results 231 to 240 of about 5,064,148 (288)
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Surface Conduction in a Microchannel
Langmuir, 2018Ionic current through a microchannel has drawn significant attention not only for fundamental electrokinetic research but also for the development of novel micro/nanofluidic applications. Among various ion transport mechanisms, surface conduction, which is a predominant mechanism in micro/nanofluidic devices, has been theoretically characterized based ...
Seoyun Sohn +4 more
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Surface barriers and surface conductance
Physica, 1954Synopsis A brief review is given of the effect of a space-charge barrier layer at the free surface of a semiconductor on various properties: (1) contact potential, (2) change in contact potential with illumination, (ΔC.P.) L , (3) rectification, (4) electron transfer reactions, including adsorption, (5) surface life-time and photo conductivity, (7)
J BARDEEN, S MORRISON
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Origin of Surface Conductivity in Diamond
Physical Review Letters, 2000Hydrogen-terminated diamond exhibits a high surface conductivity (SC) that is commonly attributed to the direct action of hydrogen-related acceptors. We give experimental evidence that hydrogen is only a necessary requirement for SC; exposure to air is also essential.
, Maier +4 more
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Surface-sensitive conductance measurements
Journal of Physics: Condensed Matter, 2008Several approaches for surface-sensitive conductance measurements are reviewed. Particular emphasis is placed on nanoscale multi-point probe techniques. The results for two model systems, which have given rise to some dispute, are discussed in detail: Si(111)(7 × 7) and ([Formula: see text])Ag-Si(111).
Hofmann, Philip; id_orcid 0000-0002-7367-5821 +1 more
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Journal of Physics: Condensed Matter, 2001
This paper deals with the dynamics of liquids, water in particular, at hard surfaces. The stacking of the first adjacent molecules leads to a thin layer which upon shear appears phenomenologically stagnant. Electrokinetic phenomena are particularly suited to study such layers. We shall show how surface conduction studies contribute to the understanding
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This paper deals with the dynamics of liquids, water in particular, at hard surfaces. The stacking of the first adjacent molecules leads to a thin layer which upon shear appears phenomenologically stagnant. Electrokinetic phenomena are particularly suited to study such layers. We shall show how surface conduction studies contribute to the understanding
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Surface charge, surface dipoles and membrane conductance
Biochimica et Biophysica Acta (BBA) - Biomembranes, 1973Abstract The conductance of lipid membranes in the presence of nonactin is changed by the adsorption of small amounts of ionic and zwitterionic surfactants. The conductance changes are, in many instances, not accounted for by the variation in surface charge or diffuse double layer potential as calculated from Gouy-Chapman theory.
D A, Haydon, V B, Myers
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The electrical conductivity and surface conduction of consolidated rock cores
Journal of Colloid and Interface Science, 2007A fully computerized high-pressure and high-temperature core holder device is simultaneously used to determine the electrical conductivity, zeta potential, and surface conductivity of consolidated rock cores in aqueous and nonaqueous systems. The total electrical conductivity of rock cores was determined by coupling streaming current and potential ...
Saad F, Alkafeef, Abdullah F, Alajmi
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Surface conductivity measurements at an ionogenic surface
Journal of Colloid and Interface Science, 1973Abstract The formation factor F , required for the determination of the surface conductivity at a solid/liquid interface, has been measured for an ionogenic surface, and for the same surface rendered non-ionogenic by chemical treatment. The values of F for both types of surface are coincident, but are lower at all volume fractions of solid than ...
D.T Pechey, A.M James
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Surface conductance of cleaved germanium surfaces
Surface Science, 1966Abstract The surface states of germanium have been investigated by measuring the change in conductance occurring upon cleavage along a (111) plane, in liquid nitrogen. Experiments were carried out with n-type samples whose donor concentrations varied from 10 13 to 10 18 /cm 3 .
Francoise Proix, Paul Handler
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Surface Conductivity of Cleaved Germanium Surfaces
Journal of Applied Physics, 1968The surface conductivity of clean germanium surfaces obtained by partial cleavage in ultrahigh vacuum has been measured for 2.0Ω·cm n-type material at room temperature by a channel technique and found to be within ±50% of 290 μmho/square. Allowing for variations in the published values of the surface hole mobility, the position of the upper edge of the
J. T. P. Grant, D. S. Webster
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