Design of micro-optical tweezers

Chen Liu; Zhihai Liu

doi:10.1117/12.906996

28 November 2011 Design of micro-optical tweezers

Chen Liu, Zhihai Liu

Proceedings Volume 8202, 2011 International Conference on Optical Instruments and Technology: Solid State Lighting and Display Technologies, Holography, Speckle Pattern Interferometry, and Micro/Nano Manufacturing and Metrology; 820212 (2011) https://doi.org/10.1117/12.906996
Event: International Conference on Optical Instruments and Technology (OIT2011), 2011, Beijing, Beijing, China

Abstract

Conventional optical fiber tweezers are unsuitable for operation inside cells, due to their big-size fiber tip to realize beam focusing. In this letter, new micro-optical tweezers with no focusing are demonstrated, which only demand a uniform thin-fiber to realize 3D capture and manipulation. The fused biconical taper method is adopted to produce micro-optical tweezers with a diameter of 0.75 μm, the finite-difference time-domain (FDTD) calculation method is used in the simulation and in the discussion of trapping ability, and the possibility of using this method is confirmed with experiments. These optical tweezers have a small size, tight structure, and simple production method, and it is hoped that they will become an effective tool in cell capture and manipulation.

Citation Download Citation

Chen Liu and Zhihai Liu "Design of micro-optical tweezers", Proc. SPIE 8202, 2011 International Conference on Optical Instruments and Technology: Solid State Lighting and Display Technologies, Holography, Speckle Pattern Interferometry, and Micro/Nano Manufacturing and Metrology, 820212 (28 November 2011); https://doi.org/10.1117/12.906996

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KEYWORDS

Optical tweezers

Particles

Optical fibers

Finite-difference time-domain method

Microscopes

Refractive index

Structured optical fibers

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