Low-Power Optical Trapping of Nanoparticles and Proteins with Resonant Coaxial Nanoaperture Using 10 nm Gap

Nano Letters
Daehan YooSang-Hyun Oh

Abstract

We present optical trapping with a 10 nm gap resonant coaxial nanoaperture in a gold film. Large arrays of 600 resonant plasmonic coaxial nanoaperture traps are produced on a single chip via atomic layer lithography with each aperture tuned to match a 785 nm laser source. We show that these single coaxial apertures can act as efficient nanotweezers with a sharp potential well, capable of trapping 30 nm polystyrene nanoparticles and streptavidin molecules with a laser power as low as 4.7 mW. Furthermore, the resonant coaxial nanoaperture enables real-time label-free detection of the trapping events via simple transmission measurements. Our fabrication technique is scalable and reproducible, since the critical nanogap dimension is defined by atomic layer deposition. Thus our platform shows significant potential to push the limit of optical trapping technologies.

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Citations

Feb 7, 2019·Wiley Interdisciplinary Reviews. Systems Biology and Medicine·Benjamin CroopKyu Young Han
Mar 14, 2019·Nanotechnology·Reuven Gordon
Sep 2, 2020·Journal of Physics. Condensed Matter : an Institute of Physics Journal·Jiachen ZhangJianlin Zhao
Sep 15, 2019·Nature Communications·Souvik Ghosh, Ambarish Ghosh
Dec 12, 2018·Nature Communications·Sang-Hyun Oh, Hatice Altug
Jun 6, 2019·Optics Express·Adarsh Lalitha RavindranathReuven Gordon
Nov 2, 2019·Optics Letters·Neuton LiKenneth Crozier
Nov 2, 2019·Optics Letters·Xiaoyun TangLibo Yuan
Apr 3, 2020·Optics Letters·Lin WangWeiqiang Ding
Feb 13, 2021·Nanoscale·Quanbo JiangJérôme Wenger
Nov 27, 2020·Frontiers in Chemistry·Elisa Ortiz-RiveroPatricia Haro-González
Mar 18, 2021·Optics Express·Xiaoshan LiuZhengqi Liu
Mar 19, 2021·Light, Science & Applications·Yuquan ZhangXiaocong Yuan
Apr 11, 2020·Nano Letters·Domna G KotsifakiSíle Nic Chormaic
Apr 3, 2021·Chemphyschem : a European Journal of Chemical Physics and Physical Chemistry·Joshua D KolbowSang-Hyun Oh
Mar 1, 2019·Nanophotonics·Abhay Kotnala, Yuebing Zheng
Mar 19, 2019·Langmuir : the ACS Journal of Surfaces and Colloids·Ye YuAndreas Fery
Aug 20, 2020·ACS Nano·Sophia Katharine LaneyIoannis Papakonstantinou
Sep 21, 2019·ACS Nano·Hyeon-Ho JeongPeer Fischer
May 10, 2020·Langmuir : the ACS Journal of Surfaces and Colloids·Souvik Ghosh, Ambarish Ghosh
Jan 9, 2020·Accounts of Chemical Research·Michelle L SolomonJennifer A Dionne

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