Higher-order spectra in nanoparticle gas sensors

J. M. Smulko, J. Ederth, L. B. Kish, P. Heszler, C. G. Granqvist

Research output: Contribution to journalArticle

9 Citations (Scopus)


It has previously been shown that resistance fluctuations in resistive sensors provide enhanced sensitivity and selectivity for gas detection. We report measurements and analysis of non-Gaussian components in nanoparticle Pdz(WO3)1-z film gas sensors, with z being 0.01 or 0.12, in different ambients. These components can be characterized by higher-order spectra. Contour plots are given of bispectra, and plots of integrated bispectra and trispectra. The phase of the integrated higher-order spectra is analyzed as well

Original languageEnglish
Pages (from-to)L597-L603
JournalFluctuation and Noise Letters
Issue number4
Publication statusPublished - Dec 1 2004


  • Gas detection
  • Gas sensor
  • Nanoparticle
  • Pattern generation
  • Resistance fluctuation
  • Signal processing
  • Tungsten oxide

ASJC Scopus subject areas

  • Mathematics(all)
  • Physics and Astronomy(all)

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    Smulko, J. M., Ederth, J., Kish, L. B., Heszler, P., & Granqvist, C. G. (2004). Higher-order spectra in nanoparticle gas sensors. Fluctuation and Noise Letters, 4(4), L597-L603. https://doi.org/10.1142/S0219477504002221