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Letter

Chemical and Dielectric Manipulation of the Plasmonic Band Gap of Metallodielectric Arrays

Cristin E. Moran^†

Department of Chemistry, Rice University, Houston, Texas 77005

Jennifer M. Steele

Department of Physics and Astronomy, Rice University, Houston, Texas 77005

N. J. Halas*

Departments of Chemistry and Electrical and Computer Engineering, Rice University, Houston, Texas 77005

Nano Letters, 2004, 4 (8), pp 1497–1500

DOI: 10.1021/nl049635c

Publication Date (Web): July 21, 2004

†

Current address: Air Force Research Laboratory, Wright-Patterson AFB, Dayton, Ohio.

Corresponding author. E-mail: halas@rice.edu.

Abstract

The propagation characteristics of surface plasmons (SPs) on metallodielectric 1-D arrays are studied as a function of dielectric environment. Metallodielectric gratings are immersed in solvent media and, alternatively, functionalized with alkanethiol self-assembled monolayers (SAMs). While the two approaches induce shifts of the SP to lower energies and reduce the group velocity, the plasmonic band gap decreases with increasing refractive index but increases with SAM functionalization. This is the first reported study of chemically controlled manipulation of a plasmonic band gap.

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Published In Issue August 11, 2004
Received March 5, 2004
Revised Manuscript Received June 7, 2004

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Letter

Chemical and Dielectric Manipulation of the Plasmonic Band Gap of Metallodielectric Arrays

Abstract

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