Results 221 to 230 of about 194,846 (262)
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Potentiostatically controlled transient diffusion on solid electrodes with rough surface
Collection of Czechoslovak Chemical Communications, 1987Transient limiting diffusion currents were measured under potentiostatic conditions on several platinum electrodes for various solutions of sucrose with profoundly different diffusivities of a depolarizer. Systematic increase of the current densities against a Cottrellian (penetration) asymptote is correlated with parameters of roughness description.
Ondřej Wein, Fawzi Hassan Assaf
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Diffusion‐Controlled Solid State Reactions
20101. Non-equilibrium Vacancies and Diffusion-controlled Processes at Nano-level (A. Gusak) 2. Diffusive Phase Competition: Fundamentals (A.Gusak) 3. Nucleation in a Concentration Gradient (A. Gusak) 4. Modeling of the Initial Stages of Reactive Diffusion (M. Pasichnyy, A. Gusak) 5. Flux-driven Morphology Evolution (A. Gusak) 6.
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Physical Review E, 2005
A lattice Boltzmann model for the dissolution of solid structures of arbitrary shape in multi-component liquids is developed. To model diffusion-controlled dissolution, a multicomponent boundary condition is presented to impose a fixed concentration on an arbitrarily located boundary.
F, Verhaeghe +3 more
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A lattice Boltzmann model for the dissolution of solid structures of arbitrary shape in multi-component liquids is developed. To model diffusion-controlled dissolution, a multicomponent boundary condition is presented to impose a fixed concentration on an arbitrarily located boundary.
F, Verhaeghe +3 more
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Solid lipid particles in lipid films to control the diffusive release of 2‐heptanone
Pest Management Science, 2013AbstractBackgroundControlled‐release formulations of bioactive agents are of increasing interest for effective pest control. Volatile 2‐heptanone is a bioactive agent that has shown potential as a pesticide. The aim of this study was to investigate the kinetics of release of 2‐heptanone incorporated into lipid films or composite solid lipid particle ...
Cristina, Bilbao-Sáinz +7 more
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Journal of Physics C: Solid State Physics, 1984
For pt.III see ibid., vol.16, no.11, p.2087 (1983). The well-known relations for the total amount W of material that diffuses in time t into or out of a semi-infinite solid when the surface y=0 is held at some constant concentration, are to be multiplied by a factor (1+ epsilon 2U) when the solid contains dislocations.
A D Le Claire, A Rabinovitch
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For pt.III see ibid., vol.16, no.11, p.2087 (1983). The well-known relations for the total amount W of material that diffuses in time t into or out of a semi-infinite solid when the surface y=0 is held at some constant concentration, are to be multiplied by a factor (1+ epsilon 2U) when the solid contains dislocations.
A D Le Claire, A Rabinovitch
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A Controlled Solid State Diffusion Process to form Cermet Anodes for Solid Oxide Fuel Cells
MRS Proceedings, 1998ABSTRACTThe interfacing of thin film vapor deposition technologies and solid state electrochemistry has led to the recent development of polarized electrochemical vapor deposition (PEVD). In this study, PEVD was applied to deposit a thin layer of yttria stabilized zirconia (YSZ) over a porous metallic electrode to form the cermet anode of a solid oxide
Eric Z. Tang +2 more
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Application of a rotary drum reactor to a diffusion-controlled liquid—solid reaction
Powder Technology, 1991Abstract A rotary drum reactor has been used to promote the diffusion-controlled reaction between a liquid and a solid, for which the density difference is more than 5 000 kg·m −3 . Using the cementation of cuprous ion aqueous solution by iron particles, the performance of the reactor was investigated in terms of an apparent mass transfer coefficient
Y. Miwa +4 more
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Wigner solids and diffusion controlled reactions in a regular array of spheres
Physica A: Statistical Mechanics and its Applications, 1985Abstract We consider particles diffusing independently in the interstitial space of a regular array of perfectly absorbing spheres. We present exact results for the steady state rate coefficient. We show that the rate coefficient may be related to the field energy of a corresponding Wigner solid which is calculated using methods developed by Nijboer ...
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Control of a Metal-Electrode Work Function by Solid-State Diffusion of Nitrogen
MRS Proceedings, 2002AbstractThe work function of a metal gate electrode has been adjusted with the introduction of nitrogen by solid-source diffusion from an over-stoichiometric TiN1+x layer. RBS measurements have shown that measurable concentrations of nitrogen can be diffused into a 10nm Ta layer at moderate anneal temperatures (>500°C), and that this concentration ...
R.J.P. Lander +6 more
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Diffusion-controlled solid-state reactive sintering of Nd:YAG transparent ceramics
Ceramics International, 2015Diffusion-controlled solid-state reactive sintering is one of the most important steps in fabrication of highly transparent Nd:YAG ceramics using commercial oxide powders as starting materials. The difference in raw powders, especially for the characteristic of Y2O3 powder, will seriously influence the sintering behavior and finally lead to the large ...
Binglong Liu +9 more
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