Paper Title:
Ultrafast Nonlinear Optical Response in Multilayer Silica-Capped Gold Nanoparticle Films
  Abstract

Gold nanoparticles were prepared by NaBH4 reduction method, and homogeneous SiO2 were coated on gold nanoparticles and assembled into densely-packed 3-dimensional arrays by the layer-by-layer self-assembly (LBL) technique. Every layer of films exhibited densely packed 2-dimensional arrays of Au@SiO2 composite nanoparticles and the film thickness was controllable through the number of deposition cycles. These multilayer films exhibited high volume fraction of gold nanoparticles (0.047). The imaginary part of the third-order nonlinear optical susceptibility (Imχ(3)) with different deposition layer have been investigated by femtosecond pump and probe spectroscopy. The Imχ(3) value is about (-8.7±3.3)×10-11 esu and almost not dependent with the layer numbers which indicates every layer of our films has the same structural and optical properties.

  Info
Periodical
Advanced Materials Research (Volumes 11-12)
Main Theme
Edited by
Masayuki Nogami, Riguang Jin, Toshihiro Kasuga and Wantai Yang
Pages
591-594
DOI
10.4028/www.scientific.net/AMR.11-12.591
Citation
Y. Yang, M. Nogami, A. Nakamura, "Ultrafast Nonlinear Optical Response in Multilayer Silica-Capped Gold Nanoparticle Films", Advanced Materials Research, Vols. 11-12, pp. 591-594, 2006
Online since
February 2006
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Price
$32.00
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