TY - JOUR
T1 - Ionic diffusion in dynamically-disordered materials
T2 - Motion on a renewing, percolative lattice
AU - Lonergan, Mark C.
AU - Nitzan, A.
AU - Ratner, Mark A.
N1 - Funding Information:
We thank S. Druger, D.F. &river, and J.W. Perram for helpful remarks. This work was supported by the AR0 (Grant No. DAAL 03 90 G0044) and by DOE (Grant No. DEFG 02 85ER45220). MCL gratefully acknowledges the National Science Foundation for a predoctoral fellowship, Teresa Fonseca’s insight, and her courage, have been inspirational in this work.
PY - 1994/7
Y1 - 1994/7
N2 - Diffusion in concentrated ionic solutions involves ionic motion subject both to interionic Coulomb forces and to the fluctuating potentials arising from solvent motion. To study how these reflect themselves in the ion transport, we examine a problem in which Coulomb particles hop on a lattice that is percolative (some jumps are forbidden) and renewing (the forbidden jumps evolve in time). Diffusivity and tracer correlation are both effected by both renewal and Coulomb interaction. Coulomb effects can destroy the validity of the dynamic percolation result that the diffusivity is proportional to the renewal rate; non-exponential decay of the energy fluctuation correlation function is observed.
AB - Diffusion in concentrated ionic solutions involves ionic motion subject both to interionic Coulomb forces and to the fluctuating potentials arising from solvent motion. To study how these reflect themselves in the ion transport, we examine a problem in which Coulomb particles hop on a lattice that is percolative (some jumps are forbidden) and renewing (the forbidden jumps evolve in time). Diffusivity and tracer correlation are both effected by both renewal and Coulomb interaction. Coulomb effects can destroy the validity of the dynamic percolation result that the diffusivity is proportional to the renewal rate; non-exponential decay of the energy fluctuation correlation function is observed.
UR - http://www.scopus.com/inward/record.url?scp=0028462431&partnerID=8YFLogxK
U2 - 10.1016/0167-7322(94)00749-7
DO - 10.1016/0167-7322(94)00749-7
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AN - SCOPUS:0028462431
SN - 0167-7322
VL - 60
SP - 269
EP - 288
JO - Journal of Molecular Liquids
JF - Journal of Molecular Liquids
IS - 1-3
ER -