Ratchet Effects in Active Matter Systems

@article{Reichhardt2016RatchetEI,
  title={Ratchet Effects in Active Matter Systems},
  author={C. J. O. Reichhardt and C. J. O. Reichhardt},
  journal={arXiv: Soft Condensed Matter},
  year={2016}
}
Ratchet effects can arise for single or collectively interacting Brownian particles on an asymmetric substrate when a net dc transport is produced by an externally applied ac driving force or by periodically flashing the substrate. Recently, a new class of active ratchet systems has been realized through the use of active matter, which are self-propelled units that can be biological or non-biological in nature. When active materials such as swimming bacteria interact with an asymmetric… 
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