# Entropy Production in an Elementary, Light Driven Micro-Machine

@inproceedings{Box2020EntropyPI, title={Entropy Production in an Elementary, Light Driven Micro-Machine}, author={Stuart J. Box and Michael P. Allen and David B. Phillips and Stephen H. Simpson}, booktitle={Frontiers of Physics}, year={2020} }

We consider the basic, thermodynamic properties of an elementary micro-machine operating at colloidal length scales. In particular, we track and analyze the driven stochastic motion of a carefully designed micro-propeller rotating unevenly in an optical tweezers, in water. In this intermediate regime, the second law of macroscopic thermodynamics is satisfied only as an ensemble average, and individual trajectories can be temporarily associated with decreases in entropy. We show that our light…

## 2 Citations

### A topological fluctuation theorem

- PhysicsNature communications
- 2022

Fluctuation theorems specify the non-zero probability to observe negative entropy production, contrary to a naive expectation from the second law of thermodynamics. For closed particle trajectories…

### Stochastic Hopf bifurcations in vacuum optical tweezers

- PhysicsPhysical Review A
- 2021

Funding: We acknowledge the support from the Engineering and Physical Sciences Research Council (Grant No. EP/P030017/1), the European Regional Development Fund (Grant No.…

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