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Simulation of Active Liquid Crystals from Self-Propelled Spheres

This study explores the behavior of self-propelled spheres using computer simulations in 2D to predict a novel form of matter: active liquid crystals. By examining the structure factor of these active crystals, the authors highlight the unique characteristics of crystallinity within the system. They demonstrate the inhomogeneous motion of particles and their diffusion patterns, analogous to a fluorescence recovery after photobleaching (FRAP) experiment. These findings provide insights into the dynamics of active matter and its potential applications in materials science.

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Simulation of Active Liquid Crystals from Self-Propelled Spheres

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  1. Active Crystals of Self Propelled Spheres G. Redner, A. Baskaran, and M. F. Hagan, Brandeis MRSEC (0820492) (b) (a) Computer simulations of self propelled spheres in 2d predict a new form of matter: an active liquid crystal. (a) The structure factor for an example active crystal showing crystallinity. (b) Instantaneous speed of particles within the system, illustrating the inhomogeneous motion within the crystal. (c) Particles in the active crystal undergo diffusion. The image shows the analog of a FRAP experiment. The particles which start in the center are labeled blue; the image to the right shows a snapshot after evolution of the dynamics. (c)

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