Optical Microrheology Using Rotating Laser-Trapped Particles
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- 14 May 2004
- journal article
- research article
- Published by American Physical Society (APS) in Physical Review Letters
- Vol. 92 (19) , 198104
- https://doi.org/10.1103/physrevlett.92.198104
Abstract
We demonstrate an optical system that can apply and accurately measure the torque exerted by the trapping beam on a rotating birefringent probe particle. This allows the viscosity and surface effects within liquid media to be measured quantitatively on a micron-size scale using a trapped rotating spherical probe particle. We use the system to measure the viscosity inside a prototype cellular structure.Keywords
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This publication has 24 references indexed in Scilit:
- Optical application and measurement of torque on microparticles of isotropic nonabsorbing materialPhysical Review A, 2003
- Rotational Diffusion MicrorheologyPhysical Review Letters, 2003
- Orientation of biological cells using plane-polarized Gaussian beam optical tweezersJournal of Modern Optics, 2003
- Light Streak Tracking of Optically Trapped Thin MicrodisksPhysical Review Letters, 2002
- Micro- and nanorheologyCurrent Opinion in Colloid & Interface Science, 2001
- Controlled Rotation of Optically Trapped Microscopic ParticlesScience, 2001
- Optical measurement of microscopic torquesJournal of Modern Optics, 2001
- Optically induced angular alignment of trapped birefringent micro-objects by linearly polarized lightPhysical Review E, 1999
- Optical angular-momentum transfer to trapped absorbing particlesPhysical Review A, 1996
- Mechanical Detection and Measurement of the Angular Momentum of LightPhysical Review B, 1936