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Resistivity and Field Electron Emission of Nanowires Formed by Electron Beam Induced Chemical Vapor Deposition
| Content Provider | Semantic Scholar |
|---|---|
| Author | Che, Renchao Liang, Chong-Yun Zhou, Xin-Gui Shi, Honglong Feng, Jian Li, Jianqi |
| Copyright Year | 2007 |
| Abstract | Self-standing iron nanowires were fabricated at the apex of a tungsten needle tip by electron beam induced deposition. This sharp needle tip which adhered to the nanowire can be moved with a stepping motor and piezo-driving device, and was attached inside a specially designed transmission electron microscope specimen holder. A copper conductor substrate, with which the approaching nanowires will build up a closed electric circuit, was set on the holder. The tungsten needle tip accompanied with the EBICVD nanowires made contact with the substrate and then a voltage was applied between the two electrodes. Resistivity values of the examined nanowires, by a devised Lock-in-Amplifier circuit, range from 0.1 Ωm to 10−3 Ωm. Our investigation might have implications in the fabrication and characterization of nano-electronics device. Precursor with phenanthrene (C4H10) was used and the deposition experiment was done using a scanning electron microscope at room temperature. It was found that the surface structure at the top of the nanorod, such as a small protrusion within only several nanometers scale, has significant influence on the field emission property. An emission current of several tens of nano-ampere flowing through this nanorod could induce resistance heating. In several minutes, this thermal energy could transform the original amorphous carbon into a graphite-like structure embedded with fullerenes. The turn-on voltage of the graphite-like nanorod was about 11 V less than that of the original amorphous case. |
| Starting Page | 680 |
| Ending Page | 684 |
| Page Count | 5 |
| File Format | PDF HTM / HTML |
| DOI | 10.1088/1674-0068/20/06/680-684 |
| Alternate Webpage(s) | http://cjcp.ustc.edu.cn/hxwlxb_cn/ch/reader/create_pdf.aspx?falg=1&file_no=070827181&quarter_id=6&year_id=2007 |
| Alternate Webpage(s) | https://doi.org/10.1088/1674-0068%2F20%2F06%2F680-684 |
| Volume Number | 20 |
| Language | English |
| Access Restriction | Open |
| Content Type | Text |
| Resource Type | Article |
