u = v/E = eT/m (average drift velocity per unit field) Conductivity o = neu Diffusion current density J = -e * particle flux or J=eD(dn/dx) where D is the diffusion coefficient Particle flux particle flux = (1/A)*(dN/dt) ...
(2) and (3), (4) When D ( in the unit of cm2/sec) is constant with respect to 13、x, (5) .(2) q Formed in two-step process 1)Predeposition : impurities are introduced into silicon at a very shallow depth 2)Drive-in diffusion : impurities are diffused deeper into silicon ...
where F is the mass flux of solute per unit time, Dd is the diffusion coefficient, C is the solute concentration, and dC/dx is the concentration gradient. Mechanical dispersion is a process by which a solute in the groundwater becomes spread out through a larger volume. This is because gr...
Skyrmions recently discovered in chiral magnets are a promising candidate for magnetic storage devices because of their topological stability, small size (～3-100 nm), and ultralow threshold current density (～10~6 A/m~2) to drive their motion. However, the time-dependent dynamics has hitherto...
The subgraph is then divided up into a few random walk pathways, and its embedding vector is learned using a gated recursive unit (GRU). The magnitude of the upcoming cascade is thus projected using the embedding vector of this subgraph. Alternative node embedding and graph embedding techniques,...
The unit cell can have either Ta or Mo-centered pattern. Because of the high concentration of Nb in the equimolar NbMoTa alloy, we characterize a unit as B2 when 3/4 of the Ta nearest neighbors are Mo, or 3/4 of the Mo nearest neighbors are Ta. To analyze the B2 cluster, the ...
Fig. 3: Energy density inside the random medium. Profiles of the normalized energy within a medium excited from the left with unit flux in all channels in a single configuration (red curve) and averaged over 2000 configurations (blue curve) for a medium with \(N=8\), \(L=600a\), and...
limiting currentdistribution of current densitynumerical solutionfinite-element methodThe work is devoted to the calculation of effective diffusion coefficient of ions from the bulk solution to the electrode through a mask and the calculation of the distribution of the limiting current density over the ...
A light condensing film includes a reflective unit, a light-transmissive substrate, a plurality of lenses, and a plurality of refractive units. The reflective unit has a plurality of holes passing through the reflective unit, wherein the... FM Chuang,HW Tsai,TK Shiau - US 被引量: 5发表:...
It is hypothesized that the unit impulse response of a linearized kinematic diffusion (KD) model is a probability distribution suitable for frequency analysis of hydrologic samples with zero values. Such samples may include data on monthly precipitation in dry seasons, annual low flow, and annual ma...