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Biomedical Optics Express

Biomedical Optics Express

  • Editor: Joseph A. Izatt
  • Vol. 3, Iss. 10 — Oct. 1, 2012
  • pp: 2419–2427

Optical stretching of giant unilamellar vesicles with an integrated dual-beam optical trap

Mehmet E. Solmaz, Roshni Biswas, Shalene Sankhagowit, James R. Thompson, Camilo A. Mejia, Noah Malmstadt, and Michelle L. Povinelli  »View Author Affiliations


Biomedical Optics Express, Vol. 3, Issue 10, pp. 2419-2427 (2012)
http://dx.doi.org/10.1364/BOE.3.002419


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Abstract

We have integrated a dual-beam optical trap into a microfluidic platform and used it to study membrane mechanics in giant unilamellar vesicles (GUVs). We demonstrate the trapping and stretching of GUVs and characterize the membrane response to a step stress. We then measure area strain as a function of applied stress to extract the bending modulus of the lipid bilayer in the low-tension regime.

© 2012 OSA

OCIS Codes
(000.1430) General : Biology and medicine
(350.4855) Other areas of optics : Optical tweezers or optical manipulation

ToC Category:
Optical Traps, Manipulation, and Tracking

History
Original Manuscript: June 11, 2012
Revised Manuscript: August 14, 2012
Manuscript Accepted: August 16, 2012
Published: September 7, 2012

Citation
Mehmet E. Solmaz, Roshni Biswas, Shalene Sankhagowit, James R. Thompson, Camilo A. Mejia, Noah Malmstadt, and Michelle L. Povinelli, "Optical stretching of giant unilamellar vesicles with an integrated dual-beam optical trap," Biomed. Opt. Express 3, 2419-2427 (2012)
http://www.opticsinfobase.org/boe/abstract.cfm?URI=boe-3-10-2419


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