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
Keywords: Light scattering
Multipolar resonance
Optical angular momentum
Optical manipulation
Optical torque
Surface plasmon
Issue Date: 2014
Publisher: De Gruyter
Source: Nanophotonics, 2014, v. 3, no. 6, p. 343-350 How to cite?
Journal: Nanophotonics 
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.
URI: http://hdl.handle.net/10397/36393
ISSN: 2192-8606 (print)
2192-8614 (online)
DOI: 10.1515/nanoph-2014-0005
Appears in Collections:Journal/Magazine Article

Access
View full-text via PolyU eLinks SFX Query
Show full item record

SCOPUSTM   
Citations

2
Citations as of Feb 25, 2017

WEB OF SCIENCETM
Citations

3
Last Week
0
Last month
Citations as of Jul 19, 2017

Page view(s)

215
Last Week
1
Last month
Checked on Jul 9, 2017

Google ScholarTM

Check

Altmetric



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