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Dynamic Control of Plasmon-Exciton Coupling in Au Nanodisk–J-Aggregate Hybrid Nanostructure Arrays

Published online by Cambridge University Press:  31 January 2011

Yue Bing Zheng
Affiliation:
[email protected], The Pennsylvania State University, Department of Engineering Science and Mechanics, University Park, Pennsylvania, United States
Bala Krishna Juluri
Affiliation:
Linlin Jensen
Affiliation:
[email protected], The Pennsylvania State University, Department of Chemistry, University Park, Pennsylvania, United States
Lasse Jensen
Affiliation:
[email protected], The Pennsylvania State University, Department of Chemistry, University Park, Pennsylvania, United States
Tony Jun Huang
Affiliation:
[email protected], The Pennsylvania State University, Department of Engineering Science and Mechanics, University Park, Pennsylvania, United States
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Abstract

We report the dynamic control of plasmon-exciton coupling in Au nanodisk arrays adsorbed with J-aggregate molecules by incident angle of light. The angle-resolved spectra of an array of bare Au nanodisks exhibit continuous shifting of localized surface plasmon resonances. This characteristic enables the production of real-time, controllable spectral overlaps between molecular and plasmonic resonances, and the efficient measurement of plasmon-exciton coupling as a function of wavelength with one or fewer nanodisk arrays. Experimental observations of varying plasmon-exciton coupling match with coupled dipole approximation calculations.

Type
Research Article
Copyright
Copyright © Materials Research Society 2010

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