Open Access Nano Express

Fabrication and spectroscopic investigation of branched silver nanowires and nanomeshworks

Xiao-Yang Zhang123, Tong Zhang123*, Sheng-Qing Zhu123, Long-De Wang123, Xuefeng Liu4, Qi-Long Wang1 and Yuan-Jun Song12

Author Affiliations

1 School of Electronic Science and Engineering, Southeast University, Nanjing 210096, People's Republic of China

2 Key Laboratory of Micro-Inertial Instrument and Advanced Navigation Technology, Ministry of Education, Nanjing 210096, People's Republic of China

3 Suzhou Key Laboratory of Metal Nano-Optoelectronic Technology, Suzhou Research Institute of Southeast University, Suzhou, 215123, People's Republic of China

4 Institute of Optics and Electronics, CAS, PO Box 350, Shuangliu, Chengdu, 610209, China

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Nanoscale Research Letters 2012, 7:596  doi:10.1186/1556-276X-7-596

Published: 27 October 2012

Abstract

Wide wavelength ranges of light localization and scattering characteristics can be attributed to shape-dependent longitude surface plasmon resonance in complicated nanostructures. We have studied this phenomenon by spectroscopic measurement and a three-dimensional numerical simulation, for the first time, on the high-density branched silver nanowires and nanomeshworks at room temperature. These nanostructures were fabricated with simple light-induced colloidal method. In the range from the visible to the near-infrared wavelengths, light has been found effectively trapped in those trapping sites which were randomly distributed at the corners, the branches, and the junctions of the nanostructures in those nanostructures in three dimensions. The broadened bandwidth electromagnetic field enhancement property makes these branched nanostructures useful in optical processing and photovoltaic applications.

Keywords:
Silver Nanowires; Nanomeshworks; Branched nanostructures; Localized surface plasmon resonance; Hot spots; Bandwidth