Next Article in Journal
Fabrication of Super-Hydrophobic Microchannels via Strain-Recovery Deformations of Polystyrene and Oxygen Reactive Ion Etch
Next Article in Special Issue
The Mechanism of Pseudomorphic Transformation of Spherical Silica Gel into MCM-41 Studied by PFG NMR Diffusometry
Previous Article in Journal
Hydrothermal Growth of Vertically Aligned ZnO Nanorods Using a Biocomposite Seed Layer of ZnO Nanoparticles
Previous Article in Special Issue
Charged Polymers Transport under Applied Electric Fields in Periodic Channels
Article Menu

Export Article

Open AccessArticle
Materials 2013, 6(8), 3598-3609; doi:10.3390/ma6083598

Drift in Diffusion Gradients

Department of Physics, University of Camerino, Camerino I-62032, Italy
Received: 27 June 2013 / Revised: 23 July 2013 / Accepted: 13 August 2013 / Published: 19 August 2013
(This article belongs to the Special Issue Diffusion in Micropores and Mesopores 2013)
View Full-Text   |   Download PDF [393 KB, uploaded 19 August 2013]   |  

Abstract

The longstanding problem of Brownian transport in a heterogeneous quasi one-dimensional medium with space-dependent self-diffusion coefficient is addressed in the overdamped (zero mass) limit. A satisfactory mesoscopic description is obtained in the Langevin equation formalism by introducing an appropriate drift term, which depends on the system macroscopic observables, namely the diffuser concentration and current. The drift term is related to the microscopic properties of the medium. The paradoxical existence of a finite drift at zero current suggests the possibility of designing a Maxwell demon operating between two equilibrium reservoirs at the same temperature.
Keywords: diffusion; Brownian transport; energy harvesting diffusion; Brownian transport; energy harvesting
This is an open access article distributed under the Creative Commons Attribution License (CC BY 3.0).

Scifeed alert for new publications

Never miss any articles matching your research from any publisher
  • Get alerts for new papers matching your research
  • Find out the new papers from selected authors
  • Updated daily for 49'000+ journals and 6000+ publishers
  • Define your Scifeed now

SciFeed Share & Cite This Article

MDPI and ACS Style

Marchesoni, F. Drift in Diffusion Gradients. Materials 2013, 6, 3598-3609.

Show more citation formats Show less citations formats

Related Articles

Article Metrics

Article Access Statistics

1

Comments

[Return to top]
Materials EISSN 1996-1944 Published by MDPI AG, Basel, Switzerland RSS E-Mail Table of Contents Alert
Back to Top