Finite size effect on hydrogen gas sensing performance in single Pd nanowires

Kye Jin Jeon, Minhong Jeun, Eunsongyi Lee, Jun Min Lee, Kyoung Il Lee, Paul Von Allmen, Wooyoung Lee

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47 Citations (Scopus)

Abstract

We present the hydrogen sensing performance of individual Pd nanowires grown by electrodeposition into nanochannels of anodized aluminum oxide (AAO) templates investigated as a function of the nanowire diameter. Four-terminal devices based on individual Pd nanowires were found to successfully detect hydrogen gas (H2). Our experimental results show that the H 2 sensing sensitivity increases and the response time decreases with decreasing diameter of Pd nanowires with d = 400, 200, 80 and 20 nm, due to the high surface-to-volume ratio and short diffusion paths, respectively. This is in qualitatively good agreement with simulated results obtained from a theoretical model based on a combination of the rate equation and diffusion equation.

Original languageEnglish
Article number495501
JournalNanotechnology
Volume19
Issue number49
DOIs
Publication statusPublished - 2008 Dec 10

All Science Journal Classification (ASJC) codes

  • Bioengineering
  • Chemistry(all)
  • Materials Science(all)
  • Mechanics of Materials
  • Mechanical Engineering
  • Electrical and Electronic Engineering

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    Jeon, K. J., Jeun, M., Lee, E., Lee, J. M., Lee, K. I., Von Allmen, P., & Lee, W. (2008). Finite size effect on hydrogen gas sensing performance in single Pd nanowires. Nanotechnology, 19(49), [495501]. https://doi.org/10.1088/0957-4484/19/49/495501