Size distribution, mechanical and electrical properties of cuo nanowires grown by modified thermal oxidation methods

Raitis Sondors, Jelena Kosmaca, Gunta Kunakova, Liga Jasulaneca, Matiss Martins Ramma, Raimonds Meija, Edijs Kauranens, Mikk Antsov, Donats Erts (Coresponding Author)

Research output: Contribution to journalArticlepeer-review

1 Citation (Scopus)

Abstract

Size distribution, Young’s moduli and electrical resistivity are investigated for CuO nanowires synthesized by different thermal oxidation methods. Oxidation in dry and wet air were applied for synthesis both with and without an external electrical field. An increased yield of high aspect ratio nanowires with diameters below 100 nm is achieved by combining applied electric field and growth conditions with additional water vapour at the first stage of synthesis. Young’s moduli determined from resonance and bending experiments show similar diameter dependencies and increase above 200 GPa for nanowires with diameters narrower than 50 nm. The nanowires synthesized by simple thermal oxidation possess electrical resistivities about one order of magnitude lower than the nanowires synthesized by electric field assisted approach in wet air. The high aspect ratio, mechanical strength and robust electrical properties suggest CuO nanowires as promising candidates for NEMS actuators.

Original languageEnglish
Article number1051
JournalNanomaterials
Volume10
Issue number6
DOIs
Publication statusPublished - Jun 2020
Externally publishedYes

Keywords

  • CuO
  • Electrical resistivity
  • Nanowire
  • NEMS
  • Synthesis
  • Thermal oxidation
  • Young’s modulus

Field of Science

  • 1.3 Physical sciences

Publication Type

  • 1.1. Scientific article indexed in Web of Science and/or Scopus database

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