Dispersion of quantum dots into gases toward their optical manipulation

Mitsutaka Kumakura; Asuka Kinan; Takeshi Moriyasu

doi:10.1117/12.2316339

24 April 2018 Dispersion of quantum dots into gases toward their optical manipulation

Mitsutaka Kumakura, Asuka Kinan, Takeshi Moriyasu

Proceedings Volume 10712, Optical Manipulation Conference; 107121I (2018) https://doi.org/10.1117/12.2316339
Event: SPIE Structured Light, 2018, Yokohama, Japan

Abstract

To realize optical manipulation and measurement for isolated quantum dots (QDs) in gaseous phase, we are developing experimental apparatus for dispersing QDs into a gas by using droplets of organic solvents. The droplet was generated with a nebulizer using a piezoelectric element and was monitored by observing the scattered light. The time variation of the QD density was also monitored by observing the fluorescence from the QDs. In the case of the diethyl ether solution of CdSe/ZnS core-shell type QDs, it was confirmed that the evaporation of the droplet was enhanced with a liquid-nitrogen trap and its typical lifetime was roughly 30 s, which was considered to be determined from the descent by the force of the gravity, the evaporation, and the diffusion.

Citation Download Citation

Mitsutaka Kumakura, Asuka Kinan, and Takeshi Moriyasu "Dispersion of quantum dots into gases toward their optical manipulation", Proc. SPIE 10712, Optical Manipulation Conference, 107121I (24 April 2018); https://doi.org/10.1117/12.2316339

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