Please use this identifier to cite or link to this item:
|Title:||Improving the morphological stability of a polycrystalline tungsten nanowire with a carbon shell|
|Citation:||You, G.F., Gong, H., Thong, J.T.L. (2010). Improving the morphological stability of a polycrystalline tungsten nanowire with a carbon shell. Nanotechnology 21 (19) : -. ScholarBank@NUS Repository. https://doi.org/10.1088/0957-4484/21/19/195701|
|Abstract:||Polycrystalline tungsten nanowire is studied for its potential as an interconnect for nanodevices. At elevated temperatures arising from Joule heating at high current densities, a bare 40nm nanowire was observed in situ in a transmission electron microscope to undergo grain grooving that eventually led to its breakage. By overcoating a carbonaceous layer onto the nanowire surface, the tungsten-carbon core-shell structure was found to sustain a much higher current density of about 3 × 107Acm-2 before failure, despite significantly higher peak temperature as a result of Joule heating. Failure occurred as a result of a different form of morphological transformation leading finally to breakage by electromigration. These findings suggest that the metal-carbon core-shell structure provides a solution to circumvent morphological instability and increase the current-carrying capability of metallic polycrystalline nanowires. © 2010 IOP Publishing Ltd.|
|Appears in Collections:||Staff Publications|
Show full item record
Files in This Item:
There are no files associated with this item.
checked on Feb 20, 2019
WEB OF SCIENCETM
checked on Feb 12, 2019
checked on Feb 2, 2019
Items in DSpace are protected by copyright, with all rights reserved, unless otherwise indicated.