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cond-mat.soft2005
Flux reversal in a two-state symmetric optical thermal ratchet
Sang-Hyuk Lee, David G. Grier
A Brownian particle's random motions can be rectified by a periodic potential energy landscape that alternates between two states, even if both states are spatially symmetric. If t…
cond-mat.soft2005
Optimized holographic optical traps
Marco Polin, Kosta Ladavac, Sang-Hyuk Lee +2
Holographic optical traps use the forces exerted by computer-generated holograms to trap, move and otherwise transform mesoscopically textured materials. This article introduces me…
cond-mat.soft2004
Observation of Flux Reversal in a Symmetric Optical Thermal Ratchet
Sang-Hyuk Lee, Kosta Ladavac, Marco Polin +1
We demonstrate that a cycle of three holographic optical trapping patterns can implement a thermal ratchet for diffusing colloidal spheres, and that the ratchet-driven transport di…