Manipulation of microparticles and biological cells using light-induced Marangoni flow

S. N. Varanakkottu, S. D. George, T. Baier, S. Hardt, M. Ewald, M. Biesalski

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract

We report a novel technique for the manipulation of biological cells and microparticles using light-actuated Marangoni tweezers (LAMT). Yeast cells and microparticles were trapped at a light intensity of 103-10 4 W/cm2 which is much lower than that required for optical tweezers. Particle manipulation using LAMT offers several advantages such as low power requirements, a trapping force scaling with the particle diameter d (instead of d3 as with conventional optical methods), and operation at vanishing refractive index contrast between the particle and the liquid.

Original languageEnglish
Title of host publication17th International Conference on Miniaturized Systems for Chemistry and Life Sciences, MicroTAS 2013
PublisherChemical and Biological Microsystems Society
Pages748-750
Number of pages3
Volume2
ISBN (Print)9781632666246
Publication statusPublished - 01-01-2013
Event17th International Conference on Miniaturized Systems for Chemistry and Life Sciences, MicroTAS 2013 - Freiburg, Germany
Duration: 27-10-201331-10-2013

Conference

Conference17th International Conference on Miniaturized Systems for Chemistry and Life Sciences, MicroTAS 2013
CountryGermany
CityFreiburg
Period27-10-1331-10-13

Fingerprint

Optical tweezers
Yeast
Refractive index
Cells
Liquids

All Science Journal Classification (ASJC) codes

  • Bioengineering

Cite this

Varanakkottu, S. N., George, S. D., Baier, T., Hardt, S., Ewald, M., & Biesalski, M. (2013). Manipulation of microparticles and biological cells using light-induced Marangoni flow. In 17th International Conference on Miniaturized Systems for Chemistry and Life Sciences, MicroTAS 2013 (Vol. 2, pp. 748-750). Chemical and Biological Microsystems Society.
Varanakkottu, S. N. ; George, S. D. ; Baier, T. ; Hardt, S. ; Ewald, M. ; Biesalski, M. / Manipulation of microparticles and biological cells using light-induced Marangoni flow. 17th International Conference on Miniaturized Systems for Chemistry and Life Sciences, MicroTAS 2013. Vol. 2 Chemical and Biological Microsystems Society, 2013. pp. 748-750
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Varanakkottu, SN, George, SD, Baier, T, Hardt, S, Ewald, M & Biesalski, M 2013, Manipulation of microparticles and biological cells using light-induced Marangoni flow. in 17th International Conference on Miniaturized Systems for Chemistry and Life Sciences, MicroTAS 2013. vol. 2, Chemical and Biological Microsystems Society, pp. 748-750, 17th International Conference on Miniaturized Systems for Chemistry and Life Sciences, MicroTAS 2013, Freiburg, Germany, 27-10-13.

Manipulation of microparticles and biological cells using light-induced Marangoni flow. / Varanakkottu, S. N.; George, S. D.; Baier, T.; Hardt, S.; Ewald, M.; Biesalski, M.

17th International Conference on Miniaturized Systems for Chemistry and Life Sciences, MicroTAS 2013. Vol. 2 Chemical and Biological Microsystems Society, 2013. p. 748-750.

Research output: Chapter in Book/Report/Conference proceedingConference contribution

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AB - We report a novel technique for the manipulation of biological cells and microparticles using light-actuated Marangoni tweezers (LAMT). Yeast cells and microparticles were trapped at a light intensity of 103-10 4 W/cm2 which is much lower than that required for optical tweezers. Particle manipulation using LAMT offers several advantages such as low power requirements, a trapping force scaling with the particle diameter d (instead of d3 as with conventional optical methods), and operation at vanishing refractive index contrast between the particle and the liquid.

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Varanakkottu SN, George SD, Baier T, Hardt S, Ewald M, Biesalski M. Manipulation of microparticles and biological cells using light-induced Marangoni flow. In 17th International Conference on Miniaturized Systems for Chemistry and Life Sciences, MicroTAS 2013. Vol. 2. Chemical and Biological Microsystems Society. 2013. p. 748-750