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Intensity‐Gradient Force: Kerker‐Type Intensity‐Gradient Force of Light (Laser Photonics Rev. 14(4)/2020)
Author(s) -
Xu Xiaohao,
NietoVesperinas Manuel,
Qiu ChengWei,
Liu Xiaoshuai,
Gao Dongliang,
Zhang Yao,
Li Baojun
Publication year - 2020
Publication title -
laser and photonics reviews
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 3.778
H-Index - 116
eISSN - 1863-8899
pISSN - 1863-8880
DOI - 10.1002/lpor.202070025
Subject(s) - pressure gradient force , optical tweezers , optical force , intensity (physics) , photonics , optics , physics , anisotropy , laser , materials science , light intensity
In article number 1900265 by Yao Zhang and co‐workers, a nontrivial optical intensity‐gradient force is uncovered in conventional optical tweezers set‐ups. This force is excited by the Kerker effects inside high‐index dielectric nanoparticles. Its non‐conservative and anisotropic properties are in sharp contrast to the classical widespread picture of optical intensity‐gradient forces. Its repulsive effects, moreover, could be exploited for high‐resolution all‐optical sorting.