منابع مشابه
Drift ratchet
We consider a silicon wafer, pierced by millions of identical pores with periodically varying diameters but without spatial inversion symmetry (ratchet profile). When a liquid is periodically pumped back and forth through the pores, our theory predicts a net transport of suspended micrometer-sized particles (drift ratchet). The direction of this particle current depends very sensitively on the ...
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We derive the explicit analytic expression for the Stokes' drift in one dimension in the presence of a dichotomic Markov forcing. For small amplitudes of the forcing, the drift is enhanced, but the enhancement is reduced with increasing frequency of the forcing. On the other hand, a reduction of the drift or even a flux reversal can be induced at larger amplitudes, while the flux is now found t...
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متن کاملNumerical Simulation of Particle Transport in a Drift Ratchet
The directed transport of micro-particles depending on their size is the basis for particle sorting methods that are of utmost importance in life sciences, e.g. A drift ratchet is a Brownian motor that allows for such a directed transport. Hereby, the particle motion is induced by a combination of the Brownian motion and asymmetries stemming for example from the domain’s geometry, electrical fi...
متن کامل4 A ug 1 99 9 Stokes ’ drift : a rocking ratchet
We derive the explicit analytic expression for the Stokes' drift in one dimension in the presence of a dichotomic Markov forcing. For small amplitudes of the forcing, the drift is enhanced, but the enhancement in reduced with increasing frequency of the forcing. On the other hand, a reduction of the drift or even a flux reversal can be induced at larger amplitudes, while the flux is now found t...
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ژورنال
عنوان ژورنال: AIChE Journal
سال: 2016
ISSN: 0001-1541,1547-5905
DOI: 10.1002/aic.15569