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IJAT Vol.8 No.1 pp. 74-82
doi: 10.20965/ijat.2014.p0074
(2014)

Paper:

Effects of Morphology of Nanodots on Localized Surface Plasmon Resonance Property

Truong Duc Phuc*, Masahiko Yoshino*, Akinori Yamanaka**,
and Takatoki Yamamoto*

*Department of Mechanical and Control Engineering, Tokyo Institute of Technology, 2-12-1 Ookayama, Meguro-ku, Tokyo 152-8550, Japan

**Department of Mechanical Systems Engineering, Tokyo University of Agriculture and Technology, 2-24-16 Nakacho, Koganei-shi, Tokyo 184-8588, Japan

Received:
June 30, 2013
Accepted:
December 5, 2013
Published:
January 5, 2014
Keywords:
gold nanodot, thermal dewetting, nanodot morphology, LSPR
Abstract

In this paper, authors report the effects of process parameters of thermal annealing method on the morphologyand Localized Surface Plasmon Resonance (LSPR) property of gold nanodots. Results show that the nanodots aggregated on a quartz glass substrate are large and sparse, while the nanodots aggregated on a silicon substrate are small and dense. The peak of the absorbance spectra is shifted to a longer wavelength and becomes broader when the gold film is thicker. The absorbance intensity increases with the increase in the gold film thickness. Increase the annealing temperature and/or the annealing time result in a blue shift of the absorbance peak and a decrease in the peak intensity. It is found that the variation in the absorbance peak wavelength and peak intensity closely correlates to the variation in the average circularity of the nanodots. This result suggests that the LSPR of nanodots can be tuned by controlling themorphology, specifically the circularity, of the nanodots.

Cite this article as:
T. Phuc, M. Yoshino, A. Yamanaka, and <. Yamamoto, “Effects of Morphology of Nanodots on Localized Surface Plasmon Resonance Property,” Int. J. Automation Technol., Vol.8, No.1, pp. 74-82, 2014.
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Last updated on Dec. 05, 2019