OSA's Digital Library

Optics Letters

Optics Letters

| RAPID, SHORT PUBLICATIONS ON THE LATEST IN OPTICAL DISCOVERIES

  • Editor: Alan E. Willner
  • Vol. 37, Iss. 9 — May. 1, 2012
  • pp: 1469–1471

Thermally activated state transition technique for femto-Newton-level force measurement

Feng-Jung Chen, Jhih-Sian Wong, Ken Y. Hsu, and Long Hsu  »View Author Affiliations


Optics Letters, Vol. 37, Issue 9, pp. 1469-1471 (2012)
http://dx.doi.org/10.1364/OL.37.001469


View Full Text Article

Enhanced HTML    Acrobat PDF (469 KB)





Browse Journals / Lookup Meetings

Browse by Journal and Year


   


Lookup Conference Papers

Close Browse Journals / Lookup Meetings

Article Tools

Share
Citations

Abstract

We develop and test a thermally activated state transition technique for ultraweak force measurement. As a force sensor, the technique was demonstrated on a classical Brownian bead immersed in water and restrained by a bistable optical trap. A femto-Newton-level flow force imposed on this sensor was measured by monitoring changes in the transition rates of the bead hopping between two energy states. The treatment of thermal disturbances as a requirement instead of a limiting factor is the major feature of the technique, and provides a new strategy by which to measure other ultraweak forces beyond the thermal noise limit.

© 2012 Optical Society of America

OCIS Codes
(120.3940) Instrumentation, measurement, and metrology : Metrology
(170.4520) Medical optics and biotechnology : Optical confinement and manipulation
(350.4855) Other areas of optics : Optical tweezers or optical manipulation
(120.4880) Instrumentation, measurement, and metrology : Optomechanics

ToC Category:
Medical Optics and Biotechnology

History
Original Manuscript: December 15, 2011
Revised Manuscript: February 17, 2012
Manuscript Accepted: February 21, 2012
Published: April 24, 2012

Citation
Feng-Jung Chen, Jhih-Sian Wong, Ken Y. Hsu, and Long Hsu, "Thermally activated state transition technique for femto-Newton-level force measurement," Opt. Lett. 37, 1469-1471 (2012)
http://www.opticsinfobase.org/ol/abstract.cfm?URI=ol-37-9-1469

You do not have subscription access to this journal. Citation lists with outbound citation links are available to subscribers only. You may subscribe either as an OSA member, or as an authorized user of your institution.

Contact your librarian or system administrator
or
Log in to access OSA Member Subscription

You do not have subscription access to this journal. Cited by links are available to subscribers only. You may subscribe either as an OSA member, or as an authorized user of your institution.

Contact your librarian or system administrator
or
Log in to access OSA Member Subscription

You do not have subscription access to this journal. Figure files are available to subscribers only. You may subscribe either as an OSA member, or as an authorized user of your institution.

Contact your librarian or system administrator
or
Log in to access OSA Member Subscription

You do not have subscription access to this journal. Article level metrics are available to subscribers only. You may subscribe either as an OSA member, or as an authorized user of your institution.

Contact your librarian or system administrator
or
Log in to access OSA Member Subscription

« Previous Article  |  Next Article »

OSA is a member of CrossRef.

CrossCheck Deposited