We review recent work on feedback control of one-dimensional colloidal systems, both with instantaneous feedback and with time delay. The feedback schemes are based on measurement of the average particle position, a natural control target for an ensemble of colloidal particles, and the systems are investigated via the Fokker-Planck equation for overdamped Brownian particles. Topics include the reversal of current and the emergence of current oscillations, transport in ratchet systems, and the enhancement of mobility by a co-moving trap. Beyond the commonly considered case of non-interacting systems, we also discuss the treatment of colloidal interactions via (dynamical) density functional theory and provide new results for systems with attractive interactions.
CITATION STYLE
Gernert, R., Loos, S. A. M., Lichtner, K., & Klapp, S. H. L. (2016). Feedback control of Colloidal transport. In Understanding Complex Systems (Vol. 0, pp. 375–392). Springer Verlag. https://doi.org/10.1007/978-3-319-28028-8_19
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