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1 December 2009 Study of a colloidal sphere near flat walls using oscillating optical tweezers
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Proceedings Volume 7507, 2009 International Conference on Optical Instruments and Technology: Optical Trapping and Microscopic Imaging; 750702 (2009) https://doi.org/10.1117/12.843376
Event: International Conference on Optical Instrumentation and Technology, 2009, Shanghai, China
Abstract
We study the dynamics of a micron-sized colloidal sphere in two cases; one is for a particle near a single flat wall and the other is for a particle confined between two parallel flat walls. In this geometry, the force felt by a moving particle is quite different from that of a moving particle in unbounded space. Even though the presence of wall(s) complicates the flow field surrounding the colloidal sphere, the dynamics of a colloidal sphere near flat walls provides a model system with which to understand the phenomenon of more complex systems whose boundaries can be modeled as effective walls.[1] In this work, hydrodynamic interactions of colloidal sphere with nearby plat wall(s) are studied by using oscillating optical tweezers and compared with known theories and other experimental results using different techniques.
© (2009) COPYRIGHT Society of Photo-Optical Instrumentation Engineers (SPIE). Downloading of the abstract is permitted for personal use only.
Chungil Ha, H. Daniel Ou-Yang, and Hyuk Kyu Pak "Study of a colloidal sphere near flat walls using oscillating optical tweezers", Proc. SPIE 7507, 2009 International Conference on Optical Instruments and Technology: Optical Trapping and Microscopic Imaging, 750702 (1 December 2009); https://doi.org/10.1117/12.843376
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