6 papers
Ion Flow Dynamics with Higher-Order Permanent Charge
Hamid Mofidi
In this research, we explore how permanent charges affect the movement of ionic currents through ion channels. We use a quasi-one-dimensional classical Poisson-Nernst-Planck (PNP)…
Bifurcation of Flux Ratio in Ionic Flows via a PNP model
Hamid Mofidi
This study investigates the flux ratios of ionic flows using Poisson-Nernst-Planck (PNP) models. The flux ratio measures the effect of permanent charge on the ion fluxes and can ex…
Local Hard-Sphere Poisson-Nernst-Planck Models for Ionic Channels with Permanent Charges
Weishi Liu, Hamid Mofidi
The main goal of this work is to examine the qualitative effect of ion sizes via a steady-state boundary value problem. We study a one-dimensional version of a Poisson-Nernst-Planc…
Geometric Mean of Concentrations and Reversal Permanent Charge in Zero-Current Ionic Flows via Poisson-Nernst-Planck Models
Hamid Mofidi
This work examines the geometric mean of concentrations and its behavior in various situations, as well as the reversal permanent charge problem, the charge sharing seen in x-ray d…
Effects of diffusion coefficients on reversal potentials in ionic channels
Bob Eisenberg, Weishi Liu, Hamid Mofidi
In this work, the dependence of reversal potentials and zero-current fluxes on diffusion coefficients are examined for ionic flows through membrane channels. The study is conducted…
Reversal potential and reversal permanent charge with unequal diffusion coefficients via classical Poisson-Nernst-Planck models
Hamid Mofidi, Weishi Liu
In this paper, based on geometric singular perturbation analysis of a quasi-one dimensional Poisson-Nernst-Planck model for ionic flows, we study the problem of zero current condit…