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A New Method to Prepare Ordered Silver Nanoparticle Arrays

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5 Author(s)
Zhongtao Shi ; College of Sciences, Ningbo University of Technology, China; National Laboratory of Solid State Microstructures and Department of Physics, Nanjing University, China. ; Jianfeng Zhou ; Min Han ; Jianguo Wan
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Poly (styrene-b-butadiene-b-styrene) (SBS) triblock copolymer templates which present in-plane cylinder pattern have been prepared by solvent-induced order-disorder phase transition method. Then silver clusters have been deposited onto the SBS copolymer templates by low energy clusters beam deposition (LECBD) apparatus. The characterization of samples by AFM with tapping-mode has shown that silver nanoparticles form ordered linear arrays, the interparticle distance of the same linear array is comparable to the particle size. Optical absorption spectra reveal that the surface plasmon resonance (SPR) of silver nanoparticles linear arrays occurs at 500 nm. It is mainly due to electrodynamic interactions between silver nanoclusters. The surface-enhanced Raman spectroscopy (SERS) spectrum shows the electric field enhancement that occurs in the vicinity of interacting silver nanoparticles. Hence the assembly of metal-copolymer nanostructure provides a promising route to achieve well ordered nanostructures

Published in:

2006 1st IEEE International Conference on Nano/Micro Engineered and Molecular Systems

Date of Conference:

18-21 Jan. 2006