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Fluctuations and irreversibility: an experimental demonstration of a second-law-like theorem using a colloidal particle held in an optical trap

Carberry, David; Reid, James; Wang, Genmiao; Sevick, Edith M; Searles, Debra J; Evans, Denis

Description

The puzzle of how time-reversible microscopic equations of mechanics lead to the time-irreversible macroscopic equations of thermodynamics has been a paradox since the days of Boltzmann. Boltzmann simply sidestepped this enigma by stating “as soon as one looks at bodies of such small dimension that they contain only very few molecules, the validity of this theorem [the second law of thermodynamics and its description of irreversibility] must cease.” Today we can state that the transient...[Show more]

dc.contributor.authorCarberry, David
dc.contributor.authorReid, James
dc.contributor.authorWang, Genmiao
dc.contributor.authorSevick, Edith M
dc.contributor.authorSearles, Debra J
dc.contributor.authorEvans, Denis
dc.date.accessioned2009-09-17T00:13:12Z
dc.date.accessioned2010-12-20T06:04:13Z
dc.date.available2009-09-17T00:13:12Z
dc.date.available2010-12-20T06:04:13Z
dc.identifier.citationPhysical Review Letters 92.14 (2004): 140601/1-4
dc.identifier.issn0031-9007
dc.identifier.issn1079-7114
dc.identifier.urihttp://hdl.handle.net/10440/865
dc.identifier.urihttp://digitalcollections.anu.edu.au/handle/10440/865
dc.description.abstractThe puzzle of how time-reversible microscopic equations of mechanics lead to the time-irreversible macroscopic equations of thermodynamics has been a paradox since the days of Boltzmann. Boltzmann simply sidestepped this enigma by stating “as soon as one looks at bodies of such small dimension that they contain only very few molecules, the validity of this theorem [the second law of thermodynamics and its description of irreversibility] must cease.” Today we can state that the transient fluctuation theorem (TFT) of Evans and Searles is a generalized, second-law-like theorem that bridges the microscopic and macroscopic domains and links the time-reversible and irreversible descriptions. We apply this theorem to a colloidal particle in an optical trap. For the first time, we demonstrate the TFT in an experiment and show quantitative agreement with Langevin dynamics.
dc.format4 pages
dc.publisherAmerican Physical Society
dc.rightshttp://www.sherpa.ac.uk/romeo/index.php "Author can archive pre-print (ie pre-refereeing) … post-print (ie final draft post-refereeing) … [and] publisher's version/PDF. Link to publisher version … [and] Copyright notice required. Publisher's version/PDF can be used on … employers web site." - from SHERPA/RoMEO site (as at 25/02/10). ©2004 The American Physical Society
dc.sourcePhysical Review Letters
dc.source.urihttp://prola.aps.org/abstract/PRL/v92/i14/e140601
dc.subjectKeywords: Degrees of freedom (mechanics); Entropy; Functions; Probability; Random processes; Relaxation processes; Statistical methods; Theorem proving; Thermodynamics; Trajectories; Vectors; Finite systems; Irreversibility; Optical traps; Time-reversible equations
dc.titleFluctuations and irreversibility: an experimental demonstration of a second-law-like theorem using a colloidal particle held in an optical trap
dc.typeJournal article
local.description.refereedYes
local.identifier.citationvolume92
dc.date.issued2004-04-06
local.identifier.absfor030704
local.identifier.ariespublicationMigratedxPub15294
local.type.statusPublished Version
local.contributor.affiliationCarberry, David, Research School of Chemistry
local.contributor.affiliationReid, James, Research School of Chemistry
local.contributor.affiliationWang, Genmiao, Research School of Chemistry
local.contributor.affiliationSevick, Edith M, Research School of Chemistry
local.contributor.affiliationSearles, Debra, Griffith University
local.contributor.affiliationEvans, Denis, Research School of Chemistry
local.bibliographicCitation.issue14
local.bibliographicCitation.startpage140601-1 - 4
local.identifier.doi10.1103/PhysRevLett.92.140601
dc.date.updated2015-12-12T08:11:20Z
local.identifier.scopusID2-s2.0-2542460626
CollectionsANU Research Publications

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