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

doi:10.1088/0957-4484/21/33/335702

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 journal › Article › peer-review

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 R^4.8, 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 language	English
Article number	335702
Journal	Nanotechnology
Volume	21
Issue number	33
DOIs	https://doi.org/10.1088/0957-4484/21/33/335702
Publication status	Published - 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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title = "Influence of electrical contacts on the 1 /f noise in individual multi-walled carbon nanotubes",

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.",

author = "Kanghyun Kim and Doyoung Jang and Kangho Lee and Haeyong Kang and Yu, {Byung Yong} and Lee, {Jung Il} and Kim, {Gyu Tae}",

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AU - Kim, Kanghyun

AU - Jang, Doyoung

AU - Lee, Kangho

AU - Kang, Haeyong

AU - Yu, Byung Yong

AU - Lee, Jung Il

AU - Kim, Gyu Tae

PY - 2010/8/20

Y1 - 2010/8/20

N2 - 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.

AB - 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.

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JO - Nanotechnology

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

Abstract

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