Please use this identifier to cite or link to this item: https://hdl.handle.net/10356/84470
Title: Elastic light-scattering measurements of single biological cells in an optical trap
Authors: Doornbos, Richard M. P.
Schaeffer, Michiel.
Hoekstra, Alfons G.
Sloot, Peter M. A.
Grooth, Bart G. de.
Greve, Jan.
Keywords: DRNTU::Engineering::Computer science and engineering
Issue Date: 1996
Source: Doornbos, R. M. P., Schaeffer, M., Hoekstra, A. G., Sloot, P. M. A., Grooth, B. G. d., & Greve, J. (1996). Elastic light-scattering measurements of single biological cells in an optical trap. Applied Optics, 35(4), 729-734.
Series/Report no.: Applied optics
Abstract: We have developed an instrument for determination of the angular light scattering of beads and biological cells. The instrument uses radiation pressure for levitation of particles inside a cuvette. The setup consists of two 780-nm diode lasers in a vertical double-beam trapping configuration. In the horizontal direction a weakly focused 633-nm probe beam is used to illuminate the trapped particle. One can detect scattered light over the range of from - 150 to 150 deg with an angular resolution of 0.9 deg using an avalanche photodiode. With this setup light scattering from polystyrene beads was measured, and the obtained scattering patterns were compared with theoretical scattering patterns from Lorenz-Mie theory. The results show that the setup is stable, gives reproducible patterns, and qualitatively agrees with the calculations. Trapping of biological cells is more difficult than trapping of beads, because smaller forces result from smaller refractive indices. We present an angular scattering pattern measured from a human lymphocyte measured from 20 to 60 deg.
URI: https://hdl.handle.net/10356/84470
http://hdl.handle.net/10220/10193
ISSN: 0003-6935
DOI: 10.1364/AO.35.000729
Schools: School of Computer Engineering 
Rights: © 1996 Optical Society of America. This paper was published in Applied Optics and is made available as an electronic reprint (preprint) with permission of Optical Society of America. The paper can be found at the following official DOI: [http://dx.doi.org/10.1364/AO.35.000729].  One print or electronic copy may be made for personal use only. Systematic or multiple reproduction, distribution to multiple locations via electronic or other means, duplication of any material in this paper for a fee or for commercial purposes, or modification of the content of the paper is prohibited and is subject to penalties under law.
Fulltext Permission: open
Fulltext Availability: With Fulltext
Appears in Collections:SCSE Journal Articles

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