Influence of electrical contacts on the 1 /f noise in individual multi-walled carbon nanotubes

Kanghyun Kim, Doyoung Jang, Kangho Lee, Haeyong Kang, Byung Yong Yu, Jung Il Lee, Gyu Tae Kim

Research output: Contribution to journalArticle

10 Citations (Scopus)

Abstract

Low-frequency noise of individual MWNTs was investigated with different metal electrodes. Irrespective of the ohmic or non-ohmic voltage-current characteristics, a strong dependence of the noise on the metal contacts was observed. The good electrical contacts with Pd or Pt electrodes enable a quasi-ballistic transport with a bigger exponent in the relation of S I α R4.8, similar to 2D metallic film or graphene. On the other hand, the noise in the case of Cr or Ti electrodes is almost linear with the resistance of the nanotubes, which may be an index of the influence of the contacts in the CNTs.

Original languageEnglish
Article number335702
JournalNanotechnology
Volume21
Issue number33
DOIs
Publication statusPublished - 2010 Aug 20

ASJC Scopus subject areas

  • Bioengineering
  • Chemistry(all)
  • Materials Science(all)
  • Mechanics of Materials
  • Mechanical Engineering
  • Electrical and Electronic Engineering

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