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Tuning the plasmon resonances of gold nanoparticles by controlling their size and shape

F. TODERAS1,* , M. BAIA1, D. MANIU1, S. ASTILEAN1

Affiliation

  1. Faculty of Physics, Nanobiophotonics Laboratory, Institute for Interdisciplinary Experimental Research, Babes-Bolyai University, Treboniu Laurian 42, 400271, Cluj-Napoca, Romania

Abstract

The optical properties of noble metal nanoparticles are tunable throughout the visible and near-infrared region of the spectrum as a function of their size, shape, aggregation state, and local environment. In this work, we report the synthesis of gold nanoparticles of different size (from 18 to around 100 nm) and shape (spheres, rods, stars) and demonstrate the tunability of their surface plasmon resonances. Transmission electron microscopy and UV-VIS absorption spectroscopy were employed for characterization..

Keywords

Gold nanoparticles, Surface plasmon resonance, TEM, UN-VIS spectroscopy.

Submitted at: Feb. 25, 2008
Accepted at: Aug. 28, 2008

Citation

F. TODERAS, M. BAIA, D. MANIU, S. ASTILEAN, Tuning the plasmon resonances of gold nanoparticles by controlling their size and shape, Journal of Optoelectronics and Advanced Materials Vol. 10, Iss. 9, pp. 2282-2284 (2008)