Fabrication of Ti-nanowires in sapphire single crystals

Atsutomo Nakamura, Katsuyuki Matsunaga, Takahisa Yamamoto, Yuichi Ikuhara

Research output: Contribution to journalArticlepeer-review

12 Citations (Scopus)


We report electrical conductivity of Ti-nanowires in sapphire fabricated by utilizing lattice dislocations. We evaporated metallic Ti on a sapphire plate containing high density of uniaxial dislocations, and annealed the plate at high temperatures. As a result, it was found that Ti atoms intensely segregated along the dislocations within about 5 nm in diameter, indicating the formation of Ti-nanowires inside sapphire. Furthermore, the nanowires were confirmed to have significant electrical conductivity even in sapphire insulator.

Original languageEnglish
Pages (from-to)38-42
Number of pages5
JournalApplied Surface Science
Issue number1-2 SPEC. ISS.
Publication statusPublished - 2005 Feb 28
Externally publishedYes


  • Dislocations
  • Electric conductivity
  • Quantum wires
  • Sapphire
  • Scanning probe microscope (SPM)

ASJC Scopus subject areas

  • Chemistry(all)
  • Condensed Matter Physics
  • Physics and Astronomy(all)
  • Surfaces and Interfaces
  • Surfaces, Coatings and Films


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