85 citations · 118 across the 13 of their papers we have counts for
14 papers
Self-organization of active rod suspensions on fluid membranes and thin viscous films
Arijit Mahapatra, Ronit Freeman, Ehssan Nazockdast
Many biological processes involve transport and organization of inclusions in thin fluid interfaces. A key aspect of these assemblies is the active dissipative stresses applied fro…
Using Activity to Compartmentalize Binary Mixtures
Nicholas J Lauersdorf, Ehssan Nazockdast, Daphne Klotsa
We computationally study suspensions of slow and fast active Brownian particles that have undergone motility induced phase separation and are at steady state. Such mixtures, of var…
Reciprocal theorem for linear poro-viscoelastic materials
Moslem Moradi, Wenzheng Shi, Ehssan Nazockdast
In studying the transport of particles and inclusions in multi-phase systems we are often interested in integrated quantities such as the total force and the net velocity of the pa…
The drag of a filament moving in a supported spherical bilayer
Wenzheng Shi, Moslem Moradi, Ehssan Nazockdast
Many of the cell membrane vital functions are achieved by the self-organization of the proteins and biopolymers embedded in it. The protein dynamics are in part determined by its d…
Hydrodynamics of a single filament moving in a fluid spherical membrane
Wenzheng Shi, Moslem Moradi, Ehssan Nazockdast
Dynamic organization of the cytoskeletal filaments and rod-like proteins in the cell membrane and other biological interfaces occurs in many cellular processes. Previous modeling s…
The Projection Extension Method: A Spectrally Accurate Technique for Complex Domains
Saad Qadeer, Ehssan Nazockdast, Boyce E. Griffith
An essential ingredient of a spectral method is the choice of suitable bases for test and trial spaces. On complex domains, these bases are harder to devise, necessitating the use…
General solutions of poroelastic equations with viscous stress
Moslem Moradi, Wenzheng Shi, Ehssan Nazockdast
Mechanical properties of cellular structures, including the cell cytoskeleton, are increasingly used as biomarkers for disease diagnosis and fundamental studies in cell biology. Re…
Dependence of phase behavior and surface tension on particle stiffness for active Brownian particles
Nicholas Lauersdorf, Thomas Kolb, Moslem Moradi +2
We study quasi two-dimensional, monodisperse systems of active Brownian particles (ABPs) for a range of activities, stiffnesses, and densities. We develop a microscopic, analytical…
Cell nucleus as a microrheological probe to study the rheology of the cytoskeleton
Moslem Moradi, Ehssan Nazockdast
Mechanical properties of the cell are important biomarkers for probing its architectural changes caused by cellular processes and/or pathologies. The development of microfluidic te…
An integral equation method for the simulation of doubly-periodic suspensions of rigid bodies in a shearing viscous flow
Jun Wang, Ehssan Nazockdast, Alex Barnett
With rheology applications in mind, we present a fast solver for the time-dependent effective viscosity of an infinite lattice containing one or more neutrally buoyant smooth rigid…
Dynamics of flexible fibers in viscous flows and fluids
O. du Roure, A. Lindner, E. N. Nazockdast +1
The dynamics and deformations of immersed flexible fibers are at the heart of important industrial and biological processes, induce peculiar mechanical and transport properties in…
A fast platform for simulating flexible fiber suspensions applied to cell mechanics
Ehssan Nazockdast, Abtin Rahimian, Denis Zorin +1
We present a novel platform for the large-scale simulation of fibrous structures immersed in a Stokesian fluid and evolving under confinement or in free-space. One of the main moti…
Cytoplasmic flows as signatures for the mechanics of mitotic positioning
Ehssan Nazockdast, Abtin Rahimian, Daniel Needleman +1
The proper positioning of the mitotic spindle is crucial for asymmetric cell division and generating cell diversity during development. Proper position in the single-cell embryo of…
Active microrheology of colloidal suspensions: simulation and microstructural theory
Ehssan Nazockdast, Jeffrey F. Morris
Accelerated Stokesian Dynamics (ASD) simulation and a microstructural theory are applied to study structure and the viscosity of hard-sphere Brownian suspensions in active microrhe…