Jump to ContentJump to Main Navigation
Molecular MachinesA Materials Science Approach$
Users without a subscription are not able to see the full content.

Giovanni Zocchi

Print publication date: 2018

Print ISBN-13: 9780691173863

Published to Princeton Scholarship Online: January 2019

DOI: 10.23943/princeton/9780691173863.001.0001

Show Summary Details
Page of

PRINTED FROM PRINCETON SCHOLARSHIP ONLINE (www.princeton.universitypressscholarship.com). (c) Copyright Princeton University Press, 2022. All Rights Reserved. An individual user may print out a PDF of a single chapter of a monograph in PRSO for personal use.date: 17 May 2022

Brownian Motion

Brownian Motion

(p.1) 1 Brownian Motion
Molecular Machines

Giovanni Zocchi

Princeton University Press

This chapter provides an introduction to the main ideas of Brownian motion. Brownian motion connects equilibrium and nonequilibrium statistical mechanics. It connects diffusion—a nonequilibrium phenomenon—with thermal fluctuations—an equilibrium concept. More precisely, diffusion with a net flow of particles, driven by a concentration gradient, pertains to a nonequilibrium system, since there is a net current. Without a concentration gradient, the system is macroscopically in equilibrium, but each individual particle undergoes self-diffusion just the same. In this sense, Brownian motion is at the border of equilibrium and nonequilibrium statistical mechanics.

Keywords:   Brownian motion, statistical mechanics, diffusion, thermal fluctuation, equilibrium

Princeton Scholarship Online requires a subscription or purchase to access the full text of books within the service. Public users can however freely search the site and view the abstracts and keywords for each book and chapter.

Please, subscribe or login to access full text content.

If you think you should have access to this title, please contact your librarian.

To troubleshoot, please check our FAQs , and if you can't find the answer there, please contact us.