OSA's Digital Library

Optics Letters

Optics Letters


  • Vol. 27, Iss. 10 — May. 15, 2002
  • pp: 836–838

Fast position measurements with scanning line optical tweezers

Rajalakshmi Nambiar and Jens-Christian Meiners  »View Author Affiliations

Optics Letters, Vol. 27, Issue 10, pp. 836-838 (2002)

View Full Text Article

Acrobat PDF (80 KB)

Browse Journals / Lookup Meetings

Browse by Journal and Year


Lookup Conference Papers

Close Browse Journals / Lookup Meetings

Article Tools



Scanning line optical tweezers are a powerful tool for the study of colloidal or biomolecular systems in the low-force regime. We present a fast, high-resolution particle position measurement scheme that extends the capabilities of these instruments into the realm of dynamic measurements. The technique is based on synchronous detection of forward-scattered laser light during a line scan. We demonstrate a position resolution of better than 50 nm for bandwidths of as much as 40 kHz for pairs of microspheres trapped in a flat line potential at center-to-center separations of 1.7–6 µm.

© 2002 Optical Society of America

OCIS Codes
(170.4520) Medical optics and biotechnology : Optical confinement and manipulation
(170.6920) Medical optics and biotechnology : Time-resolved imaging

Rajalakshmi Nambiar and Jens-Christian Meiners, "Fast position measurements with scanning line optical tweezers," Opt. Lett. 27, 836-838 (2002)

Sort:  Author  |  Year  |  Journal  |  Reset


  1. S. B. Smith, Y. Cui, and C. Bustamante, Science 271, 795 (1996).
  2. K. Svoboda and S. M. Block, Annu. Rev. Biophys. Biomol. Struct. 23, 247 (1994).
  3. F. Gittes and C. F. Schmidt, Eur. Biophys. J. 27, 75 (1998).
  4. J. C. Meiners and S. R. Quake, Phys. Rev. Lett. 84, 5014 (2000).
  5. J. C. Crocker, J. A. Matteo, A. D. Dinsmore, and A. G. Yodh, Phys. Rev. Lett. 82, 4352 (1999).
  6. L. P. Faucheux, L. S. Bourdieu, P. D. Kaplan, and A. J. Libchaber, Phys. Rev. Lett. 74, 1504 (1995).
  7. K. Visscher, S. P. Gross, and S. M. Block, IEEE J. Sel. Top. Quantum Electron. 2, 1066 (1996).
  8. A. Pralle, M. Prummer, E. L. Florin, E. H. K. Stelzer, and J. K. H. Hörber, Microsc. Res. Tech. 44, 378 (1999).

Cited By

Alert me when this paper is cited

OSA is able to provide readers links to articles that cite this paper by participating in CrossRef's Cited-By Linking service. CrossRef includes content from more than 3000 publishers and societies. In addition to listing OSA journal articles that cite this paper, citing articles from other participating publishers will also be listed.

« Previous Article  |  Next Article »

OSA is a member of CrossRef.

CrossCheck Deposited