Effect of the Degree of Petroleum Watering on the Composition of Paraffin Hydrocarbons from Interfacial Layers of Petroleum-Water Emulsions

Keyword(s):  
Author(s):  
A.M. Letsoalo ◽  
M.E. Lee ◽  
E.O. de Neijs

Semiconductor devices require metal contacts for efficient collection of electrical charge. The physics of these metal/semiconductor contacts assumes perfect, abrupt and continuous interfaces between the layers. However, in practice these layers are neither continuous nor abrupt due to poor nucleation conditions and the formation of interfacial layers. The effects of layer thickness, deposition rate and substrate stoichiometry have been previously reported. In this work we will compare the effects of a single deposition technique and multiple depositions on the morphology of indium layers grown on (100) CdTe substrates. The electrical characteristics and specific resistivities of the indium contacts were measured, and their relationships with indium layer morphologies were established.Semi-insulating (100) CdTe samples were cut from Bridgman grown single crystal ingots. The surface of the as-cut slices were mechanically polished using 5μm, 3μm, 1μm and 0,25μm diamond abrasive respectively. This was followed by two minutes immersion in a 5% bromine-methanol solution.


2021 ◽  
Author(s):  
Guanjie Lu ◽  
Zhencai Dong ◽  
Wei Liu ◽  
Xiaoping Jiang ◽  
Zuguang Yang ◽  
...  

1981 ◽  
Vol 102 (2-3) ◽  
pp. 518-526 ◽  
Author(s):  
L.J. Brillson ◽  
D.W. Kruger
Keyword(s):  

2006 ◽  
Vol 23 (2) ◽  
pp. 467-469 ◽  
Author(s):  
Xiang Wen-Feng ◽  
Lu Hui-Bin ◽  
Yan Lei ◽  
He Meng ◽  
Zhou Yue-Liang ◽  
...  

Author(s):  
Xin Wang ◽  
Dengwei Jing

Abstract Understanding of the diffusio-osmosis, the flow induced by a solute gradient acting in narrow interfacial layers at nanoscale solid-liquid interface, is of great value in view of the increasing importance of micro- and nano-fluidic devices and self-propelling particle. Here, using molecular dynamics simulations, we develop a numerical method for direct simulation of diffusio-osmosis flows mimicking the realistic experiment without any assumed external forces. It allows us to obtain reliable flow details which is however hard to get in experiments. We found that the solvent-wall interaction, previously overlooked in classical paradigm, plays a critical role in diffusio-osmosis process. In particular, diffusio-osmosis is controlled by the interaction difference between solute-wall and solvent-wall. When solute-than solvent-wall, a surface excess (depletion) of solute particles on solid-liquid interface is formed which induces diffusio-osmosis flow towards low (high) concentration. We modified the classical Derjaguin expression to include the effect of nanoscale hydrodynamics boundary conditions for the accurate prediction of diffusio-osmosis characteristics. Overall, our results provide the clear guidance for controlling fluids flow and manipulating motion of colloids under tunable solute concentrations.


RSC Advances ◽  
2017 ◽  
Vol 7 (50) ◽  
pp. 31158-31163 ◽  
Author(s):  
Mingguang Li ◽  
Wen Zhang ◽  
Honglei Wang ◽  
Lingfeng Chen ◽  
Chao Zheng ◽  
...  

Simultaneously enhanced efficiency and stability can be achieved by using an organic cathode interfacial layer with high mobility and coarse morphology.


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