Diffusion enhancement in on/off ratchets
2013 (English)In: Applied Physics Letters, ISSN 0003-6951, E-ISSN 1077-3118, Vol. 102, no 7, 073104Article in journal (Refereed) Published
We show a diffusion enhancement of suspended polystyrene particles in an electrical on/off ratchet. The enhancement can be described by a simple master equation model. Furthermore, we find that the diffusion enhancement can be described by a general curve whose shape is only determined by the asymmetry of the ratchet repeat unit. The scaling of this curve can be explained from an analytical expression valid for small off-times. Finally, we demonstrate how the master equation model can be used to find the driving parameters for optimal particle separation.
Place, publisher, year, edition, pages
American Institute of Physics (AIP) , 2013. Vol. 102, no 7, 073104
IdentifiersURN: urn:nbn:se:liu:diva-118134DOI: 10.1063/1.4793198ISI: 000315596700059OAI: oai:DiVA.org:liu-118134DiVA: diva2:813754
Funding Agencies|Dutch Organization for Scientific Research NWO [VIDI7575]2015-05-252015-05-222015-06-04