GROWTH OF 3-DIMENSIONAL SILVER FRACTAL ELECTRODEPOSITS UNDER DAMPED FREE-CONVECTION

被引:28
作者
CARRO, P [1 ]
MARCHIANO, SL [1 ]
CREUS, AH [1 ]
GONZALEZ, S [1 ]
SALVAREZZA, RC [1 ]
ARVIA, AJ [1 ]
机构
[1] NATL UNIV LA PLATA, INST INVEST FISCOQUIM TEOR & APLICADAS, RA-1900 LA PLATA, ARGENTINA
关键词
D O I
10.1103/PhysRevE.48.R2374
中图分类号
O35 [流体力学]; O53 [等离子体物理学];
学科分类号
070204 ; 080103 ; 080704 ;
摘要
Quasispherical three-dimensional Ag electrodeposits grown at constant potential and damped free convection exhibit a quasi-isotropic radial growth up to a critical radius r(c) congruent-to 0.3 cm and a mass fractal dimension D(M)=2.5. For r much greater than r(c), D(M)-->3. The product nu(r)eta' is nearly constant, nu(r) being the radial growth velocity, and eta' the apparent medium viscosity. It appears that v(r) is determined by the Laplacian field operating between cathode and anode.
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页码:R2374 / R2377
页数:4
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