Molecular pumping and separation in a symmetric channel

D. Fleishman*, A. E. Filippov, M. Urbakh

*Corresponding author for this work

Research output: Contribution to journalConference articlepeer-review


A mechanism responsible for directed transport and molecular separation in a symmetric channel is proposed. We found that under the action of spatial harmonic oscillations of the channel, the system exhibits a directed transport in either direction, presenting multiple current reversals as the amplitude and/or frequency of the oscillations are varied. The particles of different masses may be forced to move with different velocities in the same or in the opposite directions by properly adjusting driving parameters. The directed transport can be produced in both directions even in the absence of thermal noise, the latter can speed up or slow down the transport depending on the system parameters.

Original languageEnglish
Pages (from-to)209-214
Number of pages6
JournalMaterials Research Society Symposium - Proceedings
StatePublished - 2003
EventDynamics in Small Confining Systems - 2003 - Boston, MA, United States
Duration: 1 Dec 20034 Dec 2003


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