Fabrication and spectroscopic investigation of branched silver nanowires and nanomeshworks
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
Nanoscale Research Letters 2012, 7:596 doi:10.1186/1556-276X-7-596Published: 27 October 2012
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.