5 papers
Voltage dynamics of spherical membranes from single ion channel currents
Sirui Ning, Joshua B. Fernandes, Karthik Shekhar +1
Ion channels and pumps drive ion-selective currents through cell membranes at localized sites, yet a cell's electrical state is routinely summarized by a single transmembrane volta…
Interfacial mass transfer resistance at fluid-fluid interfaces
Hyeongjoo Row, Brandon J. Wallace, Joshua B. Fernandes +2
Complex chemistry in nano- and microscale compartments is often governed by how quickly reagents transit a fluid-fluid interface. Mass transport across interfaces is commonly model…
Electrochemical response of biological membranes to localized currents and external electric fields
Joshua B. Fernandes, Hyeongjoo Row, Kranthi K. Mandadapu +1
Electrochemical phenomena in biology often unfold in confined geometries where micrometer- to millimeter-scale domains coexist with nanometer-scale interfacial diffuse charge layer…
A Hereditary Integral, Transient Network Approach to Modeling Permanent Set and Viscoelastic Response in Polymers
Stephen T. Castonguay, Joshua B. Fernandes, Michael A. Puso +1
An efficient numerical framework is presented for modeling viscoelasticity and permanent set of polymers. It is based on the hereditary integral form of transient network theory, i…
Capacitive response of biological membranes
Jafar Farhadi, Joshua B. Fernandes, Karthik Shekhar +1
We present a minimal model to analyze the capacitive response of a biological membrane subjected to a step voltage via blocking electrodes. Through a perturbative analysis of the u…