Title: Impact of electric quadrupolar coupling on the optical response of an array of nano-objects
Authors: Lin, Chien Y.
Wang, Yun H.
Huang, Jung Y.
Liu, Yongjun
Zhao, Yiping
光電工程學系
Department of Photonics
Issue Date: 9-Jun-2010
Abstract: Intra- and inter-particle coupling effects are important but have not been properly taken into account in modeling the optical response of an array of nano-objects. In this paper, we present a method to analyze the impact of electric quadrupolar coupling on the optical response of a layer of silver nanorods fabricated with oblique-angle deposition (OAD). Our technique can render the non-locally coupled nano-objects into an array of coarse-grained induced charges. The retrieved polarizability tensor of the silver nanorods exhibits non-zero off-diagonal components, revealing information about the array structure and inter-particle quadrupolar couplings. Thus, a more transparent picture of the correlation between the function and structure of an optical metamaterial can be yielded.
URI: http://dx.doi.org/10.1088/0953-8984/22/22/225301
http://hdl.handle.net/11536/5274
ISSN: 0953-8984
DOI: 10.1088/0953-8984/22/22/225301
Journal: JOURNAL OF PHYSICS-CONDENSED MATTER
Volume: 22
Issue: 22
End Page: 
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