Please use this identifier to cite or link to this item: http://hdl.handle.net/1942/8407
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: 2008
Publisher: ELSEVIER SCIENCE BV
Source: COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS, 321(1-3). p. 313-317
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.
Notes: Interuniv Microelect Ctr, NEXT, B-3001 Louvain, Belgium. Katholieke Univ Leuven, Dept Chem, B-3001 Louvain, Belgium. Hasselt Univ, Inst Mat Res, B-3590 Diepenbeek, Belgium.
Keywords: sensor; gold nanoparticle; surface plasmon resonance; self-assembly; three-dimensional multilayer
Document URI: http://hdl.handle.net/1942/8407
ISSN: 0927-7757
e-ISSN: 1873-4359
DOI: 10.1016/j.colsurfa.2008.01.028
ISI #: 000257046300060
Category: A1
Type: Journal Contribution
Validations: ecoom 2009
Appears in Collections:Research publications

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