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Structure and dynamics of a phase-separating active colloidal fluid.
Origin of nanomechanical cantilever motion generated from biomolecular interactions.
- G. Wu, H. Ji, A. Majumdar
- Biology, EngineeringProceedings of the National Academy of Sciences…
- 13 February 2001
The origin of motion lies in the interplay between changes in configurational entropy and intermolecular energetics induced by specific biomolecular interactions, and by controlling entropy change during DNA hybridization, the direction of cantilever motion can be manipulated.
Nanomechanical Forces Generated by Surface Grafted DNA
It is argued that self-assembly of probe molecules on the cantilever surface must be carefully controlled and characterized for the realization of microdevices for pathogen detection that rely on nanomechanical forces generated by molecular recognition.
Dynamic pathways for viral capsid assembly.
A class of models with which the assembly of particles into T1 capsidlike objects using Newtonian dynamics is simulated, allowing for statistically meaningful conclusions about capsid assembly processes.
Modeling Viral Capsid Assembly.
- M. Hagan
- BiologyAdvances in chemical physics
- 8 January 2013
The capabilities and limitations of approaches ranging from equilibrium continuum theories to molecular dynamics simulations are discussed, and some of the important conclusions about virus assembly that have resulted from modeling efforts are given.
Orientational order of motile defects in active nematics.
- Stephen J. DeCamp, Gabriel S Redner, A. Baskaran, M. Hagan, Z. Dogic
- Materials ScienceNature materials
- 26 January 2015
By tracking thousands of defects over centimetre-scale distances in microtubule-based active nematics, this work identifies a non-equilibrium phase characterized by a system-spanning orientational order of defects that persists over hours despite defect lifetimes of only seconds.
Encapsulation of a polymer by an icosahedral virus
This work performs Brownian dynamics on a coarse-grained model that describes the dynamics of icosahedral capsid assembly around a flexible polymer and identifies several mechanisms by which the polymer plays an active role in its encapsulation, including cooperative polymer–protein motions.
Dynamics of self-propelled particles under strong confinement.
A statistical theory for the dynamics of non-aligning, non-interacting self-propelled particles confined in a convex box in two dimensions finds that when the size of the box is small compared to the persistence length of a particle's trajectory, the steady-state density is zero in the bulk and proportional to the local curvature on the boundary.
An examination of the electrostatic interactions between the N-terminal tail of the Brome Mosaic Virus coat protein and encapsidated RNAs.
Reentrant phase behavior in active colloids with attraction.
- Gabriel S Redner, A. Baskaran, M. Hagan
- PhysicsPhysical review. E, Statistical, nonlinear, and…
- 13 March 2013
A kinetic model is developed for the system's steady-state dynamics whose solution captures the main features of the phase behavior and the varied kinetics of phase separation, which range from the familiar nucleation and growth of clusters to the complex coarsening of active particle gels.