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Measurement of the Optical Trap Stiffness
- 1.0205425 - UPT-D 20010065 RIV CZ eng C - Conference Paper (international conference)
Jákl, Petr - Jonáš, Alexandr - Zemánek, Pavel - Liška, M.
Measurement of the Optical Trap Stiffness.
Sborník příspěvků konference Nové trendy ve fyzice. Vol. 2. Brno: Vysoké učení technické v Brně, 2001 - (Štrunc, M.; Hradilová, E.), s. 352-357. ISBN 80-214-1992-X.
[Nové trendy ve fyzice. Brno (CZ), 15.11.2001-16.11.2001]
R&D Projects: GA ČR GA202/99/0959; GA ČR GA101/00/0974
Institutional research plan: CEZ:AV0Z2065902
Keywords : Optical tweezers * trap stiffness measurement * Brownian motion
Subject RIV: BH - Optics, Masers, Lasers
An optical trap for dielectric microparticles is usually approximated by a parabolic potential well, whose profile is characterized by a single constant - trap stiffness. This stiffness can be estimated using several methods, including Fourier spectral analysis of the thermal noise of the trapped particle position, or method based on equipartition theorem. The principles of the trap calibration and experimental results are presented.
Permanent Link: http://hdl.handle.net/11104/0101038
Number of the records: 1