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|Title:||Re-grown aligned carbon nanotubes with improved field emission||Authors:||Lim, X.
|Issue Date:||2012||Citation:||Lim, X., Zhu, Y., Varghese, B., Gao, X., Wee, A.T.S., Sow, C.-H. (2012). Re-grown aligned carbon nanotubes with improved field emission. Journal of Nanoscience and Nanotechnology 12 (1) : 258-266. ScholarBank@NUS Repository. https://doi.org/10.1166/jnn.2012.5146||Abstract:||In this work, a simple technique to improve the field emission property of multi-walled carbon nanotubes is presented. Re-grown multi-walled carbon nanotubes are grown on the same substrates after the as-grown multi-walled carbon nanotubes are transferred to other substrates using polydimethylsiloxane as intermediation. For the duration of the synthesis of the re-grown multi-walled carbon nanotubes, similar synthesis parameters used in growing the as-grown multi-walled carbon nanotubes are utilized. As a form of possible application, field emission studies show ∼2.6 times improvement in field enhancement factor and more uniform emission for the re-grown multi-walled carbon nanotubes. In addition, the turn-on field is reduced from 2.85 V/μm to 1.40 V/μm. Such significant improvements are attributed to new emission sites comprising of sharp carbonaceous impurities encompassing both tip and upper portion of the multi-walled carbon nanotubes. As such, this technique presents a viable route for the production of multi-walled carbon nanotubes with better field emission quality. Copyright © 2012 American Scientific Publishers All rights reserved.||Source Title:||Journal of Nanoscience and Nanotechnology||URI:||http://scholarbank.nus.edu.sg/handle/10635/112671||ISSN:||15334880||DOI:||10.1166/jnn.2012.5146|
|Appears in Collections:||Staff Publications|
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