Quasi-radial growth of metal tube on si nanowires template
1 Functional Molecular Materials Centre, Scientific Research Academy, Jiangsu University, Zhenjiang 212013, P. R. China
2 Max Planck Institute of Microstructure Physics, Weinberg 2, D-06120 Halle/Saale, Germany
Nanoscale Research Letters 2011, 6:165 doi:10.1186/1556-276X-6-165Published: 23 February 2011
It is reported in this article that Si nanowires can be employed as a positive template for the controllable electrochemical deposition of noble metal tube. The deposited tube exhibits good crystallinity. Scanning electron microscope and transmission electron microscope characterizations are conducted to reveal the growth process of metal tube, showing that the metal tube grows quasi-radially on the wall of Si nanowire. The quasi-radial growth of metal enables the fabrication of thickness-defined metal tube via changing deposition time. Inner-diameter-defined metal tube is achieved by choosing Si nanowires with desired diameter as a template. Metal tubes with inner diameters ranging from 1 μm to sub-50 nm are fabricated.