Wide contact structures for low-noise nanochannel devices based on a carbon nanotube network

Hyungwoo Lee, Minbaek Lee, Seon Namgung, Seunghun Hong

Research output: Contribution to journalArticlepeer-review

10 Scopus citations

Abstract

We have developed a wide contact structure for low-noise nanochannel devices based on a carbon nanotube (CNT) network. This low-noise CNT network-based device has a dumbbell-shaped channel, which has wide CNT/electrode contact regions and, in effect, reduces the contact noise. We also performed a systematic analysis of structured CNT networks and established an empirical formula that can explain the noise behavior of arbitrary-shaped CNT network-based devices including the effect of contact regions and CNT alignment. Interestingly, our analysis revealed that the noise amplitude of aligned CNT networks behaves quite differently compared with that of randomly oriented CNT networks. Our results should be an important guideline in designing low-noise nanoscale devices based on a CNT network for various applications such as a highly sensitive low-noise sensor.

Original languageEnglish (US)
Pages (from-to)7612-7618
Number of pages7
JournalACS nano
Volume4
Issue number12
DOIs
StatePublished - Dec 28 2010

Keywords

  • 1/f noise
  • aligned network
  • carbon nanotube
  • contact resistance
  • low frequency noise

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