6 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…
Thickness effects in the electromechanical stability of charged biological membranes
Sirui Ning, Yannick A. D. Omar, Karthik Shekhar +1
Understanding how electric fields destabilize biological membranes is important for electroporation-based technologies and bioelectronic interfaces. However, theoretical descriptio…
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…
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…
Odd Viscodiffusive Fluids
Alhad Deshpande, Cory Hargus, Karthik Shekhar +1
We introduce a theory of "odd viscodiffusive fluids," which exhibit three-dimensional odd transport phenomena through the coupling of viscous and diffusive transport. In these flui…
Spatiotemporal dynamics of ionic reorganization near biological membrane interfaces
Hyeongjoo Row, Joshua B. Fernandes, Kranthi K. Mandadapu +1
Electrical signals in excitable cells involve spatially localized ionic fluxes through ion channels and pumps on cellular lipid membranes. Common approaches to understand how these…