Calibration of trap stiffness and viscoelasticity in polymer solutions

Susan H. Roelofs; Martha B. Alvarez-Elizondo; Timo A. Nieminen; Martin Persson; Norman Heckenberg; Halina Rubinsztein-Dunlop

doi:10.1117/12.793577

29 August 2008 Calibration of trap stiffness and viscoelasticity in polymer solutions

Susan H. Roelofs, Martha B. Alvarez-Elizondo, Timo A. Nieminen, Martin Persson, Norman Heckenberg, Halina Rubinsztein-Dunlop

Author Affiliations +

Proceedings Volume 7038, Optical Trapping and Optical Micromanipulation V; 703823 (2008) https://doi.org/10.1117/12.793577
Event: NanoScience + Engineering, 2008, San Diego, California, United States

Abstract

We present an experimental demonstration of a method using optical tweezers proposed by Fischer and Berg-Sorensen for measuring viscoelasticity using optical tweezers. It is based on a sinusoidal oscillation of the liquid in combination with force measurements using optical tweezers. We verify the method by applying it to measurements in water, glycerol and polyethylene oxide (PEO).

Citation Download Citation

Susan H. Roelofs, Martha B. Alvarez-Elizondo, Timo A. Nieminen, Martin Persson, Norman Heckenberg, and Halina Rubinsztein-Dunlop "Calibration of trap stiffness and viscoelasticity in polymer solutions", Proc. SPIE 7038, Optical Trapping and Optical Micromanipulation V, 703823 (29 August 2008); https://doi.org/10.1117/12.793577

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