Investigation of the resistance dependence on temperature of single carbon nanotube in different environments

Naoki Inomata, Fumihito Arai

Research output: Contribution to journalArticle

3 Citations (Scopus)

Abstract

We investigated the electrical resistance dependence on temperature of a single carbon nanotube (CNT) in vacuum, air, and water by heating the end of the CNT locally. The device used for investigation consisted of a microheater for local heating, four electrodes for measuring resistance on a silicon-on-insulator wafer, and a trench for further heat insulation. Then, the resistance of a single CNT assembled on the device was measured as a function of added heat quantity. The temperature coefficients of resistance of the CNT were 0:214 × 10-3, 0:422 × 10-3, and 0:735 × 10-3/°C in vacuum, air, and water, respectively. Moreover, the heat quantities required to raise the temperature of a CNT in air and water are 1.2- and 1.3-fold that in vacuum, respectively. Thus, CNTs, mainly used as thermal sensors in vacuum, may also be suitable for use in air and water.

Original languageEnglish
Article number125101
JournalJapanese journal of applied physics
Volume50
Issue number12
DOIs
Publication statusPublished - 2011 Dec 1

ASJC Scopus subject areas

  • Engineering(all)
  • Physics and Astronomy(all)

Fingerprint Dive into the research topics of 'Investigation of the resistance dependence on temperature of single carbon nanotube in different environments'. Together they form a unique fingerprint.

  • Cite this