Please use this identifier to cite or link to this item: http://hdl.handle.net/10397/36393
Title: Optical torque from enhanced scattering by multipolar plasmonic resonance
Authors: Lee, YE
Fung, KH 
Jin, D
Fang, NX
Issue Date: 2014
Source: Nanophotonics, 2014, v. 3, no. 6, p. 343-350
Abstract: We present a theoretical study of the optical angular momentum transfer from a circularly polarized plane wave to thin metal nanoparticles of different rotational symmetries. While absorption has been regarded as the predominant mechanism of torque generation on the nanoscale, we demonstrate numerically how the contribution from scattering can be enhanced by using multipolar plasmon resonance. The multipolar modes in non-circular particles can convert the angular momentum carried by the scattered field and thereby produce scattering-dominant optical torque, while a circularly symmetric particle cannot. Our results show that the optical torque induced by resonant scattering can contribute to 80% of the total optical torque in gold particles. This scattering-dominant torque generation is extremely mode-specific, and deserves to be distinguished from the absorption-dominant mechanism. Our findings might have applications in optical manipulation on the nanoscale as well as new designs in plasmonics and metamaterials.
Keywords: Light scattering
Multipolar resonance
Optical angular momentum
Optical manipulation
Optical torque
Surface plasmon
Publisher: De Gruyter
Journal: Nanophotonics 
ISSN: 2192-8606
EISSN: 2192-8614
DOI: 10.1515/nanoph-2014-0005
Rights: © 2014 Science Wise Publishing & De Gruyter
The following publication Lee, Yoonkyung E., Fung, Kin Hung, Jin, Dafei and Fang, Nicholas X.. "Optical torque from enhanced scattering by multipolar plasmonic resonance" Nanophotonics, vol. 3, no. 6, 2014, pp. 343-350 is available at https://doi.org/10.1515/nanoph-2014-0005.
Appears in Collections:Journal/Magazine Article

Open Access Information
Status open access
File Version Version of Record
Access
View full-text via PolyU eLinks SFX Query
Show full item record

Page views

260
Last Week
0
Last month
Citations as of Jan 29, 2023

SCOPUSTM   
Citations

19
Last Week
1
Last month
Citations as of Jan 27, 2023

WEB OF SCIENCETM
Citations

18
Last Week
0
Last month
Citations as of Jan 26, 2023

Google ScholarTM

Check

Altmetric


Items in DSpace are protected by copyright, with all rights reserved, unless otherwise indicated.