2026-09-19T05:14:29Zhttps://dspace.mit.edu/server/oai/requestoai:dspace.mit.edu:1721.1/1003412022-01-13T07:54:07Zcom_1721.1_7582com_1721.1_7581col_1721.1_131024
Alfredo Alexander-Katz and Jeremy England.
Choi, Sang Hyun
Massachusetts Institute of Technology. Department of Physics.
Massachusetts Institute of Technology. Department of Physics
2015-12-16T16:33:08Z
2015-12-16T16:33:08Z
2015
2015
http://hdl.handle.net/1721.1/100341
930619527
Thesis: S.B., Massachusetts Institute of Technology, Department of Physics, 2015.
Cataloged from PDF version of thesis.
Includes bibliographical references (pages 45-46).
The particle localization in ratchet potentials with segments of reverse directions, or kinked ratchets, is computationally studied. Kinks localize a particle on on-off pulsating ratchet potentials, forming stable points in the effective potential. Analogous Kramers rate for transition between kinks is derived through simulations under different values of parameters defining the system. Adding tilting to the system with a proper choice of tilting frequency induces stochastic resonance. Delocalization of a particle is observed in the resonant activation regime.
by Sang Hyun Choi.
S.B.
51 pages
eng
Massachusetts Institute of Technology
M.I.T. theses are protected by copyright. They may be viewed from this source for any purpose, but reproduction or distribution in any format is prohibited without written permission. See provided URL for inquiries about permission.
http://dspace.mit.edu/handle/1721.1/7582
Physics.
Localization, escape rate and delocalization in kinked ratchet potentials
Thesis
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