Sub-10  nm particle trapping enabled by a plasmonic dark mode

Optics Letters
Fajun XiaoJianlin Zhao

Abstract

We demonstrate that a highly localized plasmonic dark mode with radial symmetry, termed quadrupole-bonded radial breathing mode, can be used for optically trapping the dielectric nanoparticles. In particular, the annular potential well produced by this dark mode shows a sufficiently large depth to stably trap the 5 nm particles under a relatively low optical power. Our results address the quest for precisely trapping sub-10 nm particles with high yield and pave the way for placing sub-10 nm particles conforming to a specific geometric pattern.

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Citations

Sep 2, 2020·Journal of Physics. Condensed Matter : an Institute of Physics Journal·Jiachen ZhangJianlin Zhao
Mar 17, 2019·Optics Express·Fajun XiaoJianlin Zhao
Mar 19, 2021·Light, Science & Applications·Yuquan ZhangXiaocong Yuan

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