Title: Enhanced localized surface plasmon resonance sensing on three-dimensional gold nanoparticles assemblies
Authors: Ye, Jian
Bonroy, Kristien
Nelis, Daniel
Frederix, Filip
D'Haen, Jan
Maes, Guido
Borghs, Gustaaf #
Issue Date: May-2008
Publisher: Elsevier science bv
Series Title: Colloids and Surfaces A, Physicochemical and Engineering Aspects vol:321 issue:1-3 pages:313-317
Conference: International Conference on Organized Molecular edition:12 location:Cracow (Poland) date:01-05 July 2007
Abstract: Three-dimensional (313) self-assemblies of metal nanoparticles (NPs) are attracting intense attention for sensing applications since they display unique optical properties which are distinct from their respective bulk and individual NP characteristics. In this paper, 3D self-assembled gold (Au) NPs multilayer structures have been fabricated by the alternate deposition of a bifunctional cross-linker and Au NPs, to improve the refractive index sensitivity of the localized surface plasmon resonance sensor. UV-vis spectroscopy, atomic force microscopy (AFM) and cross-section transmission electron microscopy (TEM) have been used to characterize the obtained multilayer structures. The investigations show that the number of Au NP deposition cycles has a strong effect on the sensitivity of the sensor and the multilayer structure fabricated from four NP deposition cycles exhibits maximum sensitivity to the change of the environmental refractive index. (C) 2008 Elsevier B.V. All rights reserved.
ISSN: 0927-7757
Publication status: published
KU Leuven publication type: IT
Appears in Collections:Quantum Chemistry and Physical Chemistry Section
Solid State Physics and Magnetism Section
Semiconductor Physics Section
# (joint) last author

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