Trace detection of multiwalled carbon nanotubes using Raman-enhancing silver nanocap arrays

Research output: Journal Publications and Reviews (RGC: 21, 22, 62)21_Publication in refereed journalpeer-review

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Author(s)

  • Xianzhong Lang
  • Teng Qiu
  • Wenjun Zhang
  • Cheng Ji
  • Jun Wang

Detail(s)

Original languageEnglish
Article number455302
Journal / PublicationJournal of Physics D: Applied Physics
Volume43
Issue number45
Publication statusPublished - 17 Nov 2010

Abstract

A convenient strategy is demonstrated for trace detection of multiwalled carbon nanotubes (MWNTs) using Raman-enhancing silver nanocap arrays. Microstructural analysis indicates that the hot spots are evenly distributed on the substrate. A brief analytical methodology to evaluate the dispersity of adsorbed MWNTs with different ultra-low concentrations by 2D point-by-point Raman mapping is proposed. The detection limit of this method was found to be 3 ppb. Our results open new possibilities for applying surface-enhanced Raman scattering to trace detection of an inorganic probe. © 2010 IOP Publishing Ltd.

Citation Format(s)

Trace detection of multiwalled carbon nanotubes using Raman-enhancing silver nanocap arrays. / Lang, Xianzhong; Qiu, Teng; Zhang, Wenjun; Ji, Cheng; Wang, Jun; Chu, Paul K.

In: Journal of Physics D: Applied Physics, Vol. 43, No. 45, 455302, 17.11.2010.

Research output: Journal Publications and Reviews (RGC: 21, 22, 62)21_Publication in refereed journalpeer-review