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Published on: May 13, 2013
A simple approach for large-area fabrication of Ag nanorings
Zhi-Hao Yuan1, Wei Zhou, Yue-Qin Duan
1Nanomaterials and Nanotechnology Research Center, Tianjin University of Technology, Tianjin 300191, People's Republic of China. Tianjin Key Lab for Photoelectric Materials and Devices, Tianjin 300191, People's Republic of China.
Abstract:
A simple and low-cost method based on a two-step heat treatment of AgNO(3)/SiO(2) film has been developed for fabricating metal Ag nanoring arrays. The as-prepared nanorings have an inner diameter of 70-250 nm and an average wall thickness (namely wire diameter) of approximately 30 nm with a number density of approximately 10(9) cm(-2) on the surface of the SiO(2) matrix. X-ray diffraction (XRD) results reveal that these nanorings exhibit a face-centered cubic crystal structure. Furthermore, a new growth mechanism, namely a molten metal bubble as a self-template, is tentatively proposed for Ag nanorings.
