Chemically driven carbon-nanotube-guided thermopower waves

Wonjoon Choi, Seunghyun Hong, Joel T. Abrahamson, Jae Hee Han, Changsik Song, Nitish Nair, Seunghyun Baik, Michael S. Strano

Research output: Contribution to journalArticle

142 Citations (Scopus)

Abstract

Theoretical calculations predict that by coupling an exothermic chemical reaction with a nanotube or nanowire possessing a high axial thermal conductivity, a self-propagating reactive wave can be driven along its length. Herein, such waves are realized using a 7-nm cyclotrimethylene trinitramine annular shell around a multiwalled carbon nanotube and are amplified by more than 104 times the bulk value, propagating faster than 2 m s -1, with an effective thermal conductivity of 1.2±80.2 kW m-1 K 1 at 2,860 K. This wave produces a concomitant electrical pulse of disproportionately high specific power, as large as 7 kW kg-1, which we identify as a thermopower wave. Thermally excited carriers flow in the direction of the propagating reaction with a specific power that scales inversely with system size. The reaction also evolves an anisotropic pressure wave of high total impulse per mass (300 N s kg-1). Such waves of high power density may find uses as unique energy sources.

Original languageEnglish
Pages (from-to)423-429
Number of pages7
JournalNature Materials
Volume9
Issue number5
DOIs
Publication statusPublished - 2010 May 1
Externally publishedYes

Fingerprint

Thermal Conductivity
Carbon Nanotubes
Thermoelectric power
Carbon nanotubes
carbon nanotubes
Nanowires
Nanotubes
Pressure
thermal conductivity
total impulse
high impulse
Thermal conductivity
RDX
energy sources
elastic waves
Multiwalled carbon nanotubes (MWCN)
radiant flux density
chemical reactions
nanotubes
nanowires

ASJC Scopus subject areas

  • Mechanical Engineering
  • Mechanics of Materials
  • Condensed Matter Physics
  • Materials Science(all)
  • Chemistry(all)

Cite this

Choi, W., Hong, S., Abrahamson, J. T., Han, J. H., Song, C., Nair, N., ... Strano, M. S. (2010). Chemically driven carbon-nanotube-guided thermopower waves. Nature Materials, 9(5), 423-429. https://doi.org/10.1038/nmat2714

Chemically driven carbon-nanotube-guided thermopower waves. / Choi, Wonjoon; Hong, Seunghyun; Abrahamson, Joel T.; Han, Jae Hee; Song, Changsik; Nair, Nitish; Baik, Seunghyun; Strano, Michael S.

In: Nature Materials, Vol. 9, No. 5, 01.05.2010, p. 423-429.

Research output: Contribution to journalArticle

Choi, W, Hong, S, Abrahamson, JT, Han, JH, Song, C, Nair, N, Baik, S & Strano, MS 2010, 'Chemically driven carbon-nanotube-guided thermopower waves', Nature Materials, vol. 9, no. 5, pp. 423-429. https://doi.org/10.1038/nmat2714
Choi W, Hong S, Abrahamson JT, Han JH, Song C, Nair N et al. Chemically driven carbon-nanotube-guided thermopower waves. Nature Materials. 2010 May 1;9(5):423-429. https://doi.org/10.1038/nmat2714
Choi, Wonjoon ; Hong, Seunghyun ; Abrahamson, Joel T. ; Han, Jae Hee ; Song, Changsik ; Nair, Nitish ; Baik, Seunghyun ; Strano, Michael S. / Chemically driven carbon-nanotube-guided thermopower waves. In: Nature Materials. 2010 ; Vol. 9, No. 5. pp. 423-429.
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