@inproceedings{b2c8153fbdda48c3a420c530acbac654,
title = "High-resolution and massive trapping and separation of dielectric nanoparticles in an optical potential well array",
abstract = "Optical tweezers are versatile tools capable to separate microparticles, yet present formidable challenges in the separation of nanoparticles smaller than 200 nm. The difficulties arise from the controversy on the requirement of a tightly focused light spot in order to create strong optical forces while a large area is kept for the sorting. To overcome this problem, we create a near-field potential well array with connected tiny hotspots in a large-scale. This can separate nanoparticles with sizes from 100 to 500 nm, based on the differentiated energy depths of each potential well. In this way, nanoparticles of 200, 300 and 500 nm can be selectively trapped in this microchannel by appropriately tuning the laser power. Our approach provides a unprecedent solution for optical trapping and separation of nanoparticles and biomolecules, so that it presents a huge potential in the physical and biomedical sciences. ",
keywords = "lab on a chip, nanophotonics, optical forces, optical sorting, potential wells, silicon photonics",
author = "Yuzhi Shi and Tsai, {Din Ping} and Yi Zhang and Liu, {Ai Qun}",
note = "Publisher Copyright: {\textcopyright} 2021 SPIE.; Complex Light and Optical Forces XV 2021 ; Conference date: 06-03-2021 Through 11-03-2021",
year = "2021",
month = mar,
doi = "10.1117/12.2578002",
language = "English",
series = "Proceedings of SPIE - The International Society for Optical Engineering",
publisher = "SPIE",
editor = "Galvez, {Enrique J.} and Halina Rubinsztein-Dunlop and Andrews, {David L.}",
booktitle = "Complex Light and Optical Forces XV",
address = "United States",
}