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      Synergistic modulation of surface interaction to assemble metal nanoparticles into two-dimensional arrays with tunable plasmonic properties

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      Author
      Jiang, Lin
      Zou, Changji
      Zhang, Zhonghan
      Sun, Yinghui
      Jiang, Yueyue
      Leow, Wanru
      Liedberg, Bo
      Li, Shuzhou
      Chen, Xiaodong
      Date of Issue
      2013
      School
      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.
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      • MSE Journal Articles
      http://dx.doi.org/10.1002/smll.201302126
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