Synergistic modulation of surface interaction to assemble metal nanoparticles into two-dimensional arrays with tunable plasmonic properties
Author
Jiang, Lin
Zou, Changji
Zhang, Zhonghan
Sun, Yinghui
Jiang, Yueyue
Leow, Wanru
Liedberg, Bo
Li, Shuzhou
Chen, Xiaodong
Date of Issue
2013School
School of Materials Science and Engineering
Abstract
A simple strategy based on the synergistic modulation of inter-particle and substrate-particle interaction is applied for the large-scale fabrication of two-dimensional (2D) Au and Ag nanoparticle arrays. The surface charge of the substrate is used to redistribute the double layer electric charges on the particles and to modulate the inter-particle distance within the 2D nanoparticle arrays on the substrate. The resultant arrays, with a wide range of inter-particle distances, display tunable plasmonic properties. It can be foreseen that such 2D nanoparticle arrays possess potential applications as multiplexed colorimetric sensors, integrated devices and antennas. Herein, it is demonstrated that these arrays can be employed as wavelength-selective substrates for multiplexed acquisition of surface-enhanced Raman scattering (SERS) spectra. This simple one step process provides an attractive and low cost strategy to produce high quality and large area 2D ordered arrays with tunable properties.
Subject
DRNTU::Engineering::Materials::Nanostructured materials
Type
Journal Article
Series/Journal Title
Small
Rights
© 2013 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim.
Collections
http://dx.doi.org/10.1002/smll.201302126
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