BROWSE

Related Researcher

Author's Photo

Pak, Hyuk Kyu
Soft Condensed Matter Physics Lab (SCMP)
Research Interests
  • Soft matter, liquids, fluctuations, interfacial energy, energy harvesting, optical tweezers

ITEM VIEW & DOWNLOAD

Nonequilibrium fluctuations for a single-particle analog of gas in a soft wall

Cited 1 times inthomson ciCited 1 times inthomson ci
Title
Nonequilibrium fluctuations for a single-particle analog of gas in a soft wall
Author
Lee, Dong YunKwon, ChulanPak, Hyuk Kyu
Issue Date
2015-02
Publisher
AMER PHYSICAL SOC
Citation
PHYSICAL REVIEW LETTERS, v.114, no.6, pp.060603-1
Abstract
We investigate the motion of a colloidal particle driven out of equilibrium by a time-varying stiffness of the optical trap that produces persistent nonequilibrium work. Measurements of work production for repeated cycles composed of the compression and expansion processes for the optical potential show huge fluctuations due to thermal motion. Using a precise technique to modulate the stiffness in time, we accurately estimate the probability distributions of work produced for the compression and expansion processes. We confirm the fluctuation theorem from the ratio of the two distributions. We also show that the average values of work for the two processes comply with the Jarzynski equality. This system has an analogy with a gas in a breathing soft wall. We discuss about its applicability to a heat engine and an information engine operated by feedback control.
URI
https://scholarworks.unist.ac.kr/handle/201301/10742
URL
http://journals.aps.org/prl/abstract/10.1103/PhysRevLett.114.060603#authors
DOI
10.1103/PhysRevLett.114.060603
ISSN
0031-9007
Appears in Collections:
PHY_Journal Papers
Files in This Item:
There are no files associated with this item.

find_unist can give you direct access to the published full text of this article. (UNISTARs only)

Show full item record

qrcode

  • mendeley

    citeulike

Items in DSpace are protected by copyright, with all rights reserved, unless otherwise indicated.

MENU