Numerical study of diffusion induced transport in 2D systems

✍ Scribed by M. Kostur; L. Schimansky-Geier

• Publisher: Elsevier Science
• Year: 2000
• Tongue: English
• Weight: 431 KB
• Volume: 265
• Category: Article
• ISSN: 0375-9601
• DOI: 10.1016/s0375-9601(99)00906-8

✦ Synopsis

Transport in a two-dimensional 2D diffusive system with a 'ratchet-like' potential is studied. An additive constant force is applied perpendicularly to the direction where the reflection symmetry of the potential is broken. It is demonstrated that a flow of Brownian particles orthogonally to the applied force is induced. Finite element method has been used as a tool for the solution of the corresponding Smoluchowski-equation. The results have been compared to Monte Carlo simulations and show good agreement. We also present the comparison of the 2D system with an 1D flashing ratchet.