Optical tweezers escape forces

Bui, Ann A. M., Stilgoe, Alexander B., Khatibzadeh, Nima, Nieminen, Timo A., Rubinsztein-Dunlop, Halina and Berns, Michael W. (2014). Optical tweezers escape forces. In: Kishan Dholakia and Gabriel C. Spalding, Optical Trapping and Optical Micromanipulation XI. Conference on Optical Trapping and Optical Micromanipulation XI, San Diego, CA United States, (). 17-21 August 2014. doi:10.1117/12.2062805

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Author Bui, Ann A. M.
Stilgoe, Alexander B.
Khatibzadeh, Nima
Nieminen, Timo A.
Rubinsztein-Dunlop, Halina
Berns, Michael W.
Title of paper Optical tweezers escape forces
Conference name Conference on Optical Trapping and Optical Micromanipulation XI
Conference location San Diego, CA United States
Conference dates 17-21 August 2014
Proceedings title Optical Trapping and Optical Micromanipulation XI   Check publisher's open access policy
Journal name Proceedings of SPIE - The International Society for Optical Engineering   Check publisher's open access policy
Place of Publication Bellingham, WA United States
Publisher S P I E - International Society for Optical Engineering
Publication Year 2014
Year available 2014
Sub-type Fully published paper
DOI 10.1117/12.2062805
Open Access Status File (Publisher version)
ISBN 9781628411911
ISSN 0277-786X
Editor Kishan Dholakia
Gabriel C. Spalding
Volume 9164
Total pages 7
Collection year 2015
Language eng
Formatted Abstract/Summary
With suitable calibration, optical tweezers can be used to measure forces. If the maximum force that can be exerted is of interest, calibration can be performed using viscous drag to remove a particle from the trap, typically by moving the stage. The stage velocity required to remove the particle then gives the escape force. However, the escape force can vary by up to 30% or more, depending on the particle trajectory. This can have significant quantitative impact on measurements. We describe the variation of escape force and escape trajectory, using both experimental measurements and simulations, and discuss implications for experimental measurement of forces.
Keyword Optical tweezers
Optical force
Q-Index Code E1
Q-Index Status Confirmed Code
Institutional Status UQ

Document type: Conference Paper
Collections: School of Mathematics and Physics
Official 2015 Collection
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Citation counts: TR Web of Science Citation Count  Cited 1 times in Thomson Reuters Web of Science Article | Citations
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