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- Aparna Baskaran, M. Cristina Marchetti
- Proceedings of the National Academy of Sciencesâ€¦
- 2009

Unicellular living organisms, such as bacteria and algae, propel themselves through a medium via cyclic strokes involving the motion of cilia and flagella. Dense populations of such "activeâ€¦ (More)

- Gabriel S Redner, Michael F. Hagan, Aparna Baskaran
- Physical review letters
- 2013

We examine a minimal model for an active colloidal fluid in the form of self-propelled Brownian spheres that interact purely through excluded volume with no aligning interaction. Using simulationsâ€¦ (More)

Using tools of nonequilibirum mechanics, we study a model of self-propelled hard rods on a substrate in two dimensions to quantify the interplay of self-propulsion and excluded-volume effects. Weâ€¦ (More)

- Aparna Baskaran, M. Cristina Marchetti
- The European physical journal. E, Soft matter
- 2012

We consider the hydrodynamic theory of an active fluid of self-propelled particles with nematic aligning interactions. This class of materials has polar symmetry at the microscopic level, but formsâ€¦ (More)

- Yaouen Fily, Aparna Baskaran, Michael F. Hagan
- Physical review. E, Statistical, nonlinear, andâ€¦
- 2015

We study the dynamics of nonaligning, noninteracting self-propelled particles confined to a box in two dimensions. In the strong confinement limit, when the persistence length of the active particlesâ€¦ (More)

- James W. Dufty, Aparna Baskaran, JosÃ© Javier Brey
- Physical review. E, Statistical, nonlinear, andâ€¦
- 2008

A formal derivation of linear hydrodynamics for a granular fluid is given. The linear response to small spatial perturbations of a homogeneous reference state is studied in detail, using methods ofâ€¦ (More)

- Aparna Baskaran, M. Cristina Marchetti
- Physical review. E, Statistical, nonlinear, andâ€¦
- 2008

Motivated by recent simulations and by experiments on aggregation of gliding bacteria, we study a model of the collective dynamics of self-propelled hard rods on a substrate in two dimensions. Theâ€¦ (More)

- Aparna Baskaran, M. Cristina Marchetti
- Physical review letters
- 2008

Starting from a minimal physical model of self-propelled hard rods on a substrate in two dimensions, we derive a modified Smoluchowski equation for the system. Self-propulsion enhances longitudinalâ€¦ (More)

We study mixtures of self-propelled and passive rod-like particles in two dimensions using Brownian dynamics simulations. The simulations demonstrate that the two species spontaneously segregate toâ€¦ (More)

- Arvind Gopinath, Michael F. Hagan, M. Cristina Marchetti, Aparna Baskaran
- Physical review. E, Statistical, nonlinear, andâ€¦
- 2012

We study a continuum model of overdamped self-propelled particles with aligning interactions in two dimensions. Combining analytical theory and computations, we map out the phase diagram for theâ€¦ (More)