Optical transport and sorting of fluorescent nanodiamonds inside a tapered glass capillary

Christophe Pin; Ryohei Otsuka; Keiji Sasaki

doi:10.1117/12.2573776

15 June 2020 Optical transport and sorting of fluorescent nanodiamonds inside a tapered glass capillary

Christophe Pin, Ryohei Otsuka, Keiji Sasaki

Proceedings Volume 11522, Optical Manipulation and Structured Materials Conference 2020; 115220N (2020) https://doi.org/10.1117/12.2573776
Event: SPIE Technologies and Applications of Structured Light, 2020, Yokohama, Japan

Abstract

Optical forces may provide an elegant solution to achieve optical sorting of nanoparticles according to their optical properties. Yet, efficient nanoparticle optical sorting would require all the nanoparticles to be gathered and kept inside the light path for a sufficient time. In order to overcome nanoparticle diffusion, we investigate the use of tapered glass capillaries as optofluidic waveguides. We demonstrate size-dependent optical transport of fluorescent nanodiamonds inside a tapered capillary. Particle velocities reaching few tens of micrometers per second were achieved, and size estimations are performed based on the nanoparticles’ velocities. Nanoparticle sorting is also demonstrated by balancing the optical transport of the nanodiamonds with a liquid flow in the opposite direction.

Citation Download Citation

Christophe Pin, Ryohei Otsuka, and Keiji Sasaki "Optical transport and sorting of fluorescent nanodiamonds inside a tapered glass capillary", Proc. SPIE 11522, Optical Manipulation and Structured Materials Conference 2020, 115220N (15 June 2020); https://doi.org/10.1117/12.2573776

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