Study of Net Current of Particles in 2D Pulsated Potential Landscape

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Kargaran, Amir | 2011

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Type of Document: M.Sc. Thesis
Language: Farsi
Document No: 42160 (04)
University: Sharif University of Technology
Department: Physics
Advisor(s): Ejtehadi, Mohammad Reza
Abstract:
In systems possessing spatial or dynamical symmetry breaking, Brownian motion combined with unbiased external input signals, deterministic and random alike, can assist directed motion of particles at nanoscale. “Brownian motors” are devices by whi thermally or extrinsically activated processes are controlled and used to generate directed motion in space. Rectification devices involving asymmetric substrates are termed ratets and if the potential priodically turns on and off in time, it is called “Pulsated Ratet.“ In this resear net current of particles in 2D pulsated asymmetric potential landscapes is surveyed theoretically and by
Monte Carlo method simulation
Keywords:
Monte Carlo Method ; Energy Landscape ; Brownian Motors ; Ratchet Potential