Characterization of femtosecond-laser-induced periodic structures on SiC substrates

Reina Miyagawa, Yutaka Ohno, Momoko Deura, Ichiro Yonenaga, Osamu Eryu

Research output: Contribution to journalArticle

4 Citations (Scopus)

Abstract

We investigated the crystalline state of femtosecond-laser-induced periodic structures using a transmission electron microscope (TEM). The core of the 200-nm-pitch periodic nanostructures on SiC retained a high crystalline quality continued from the SiC substrate, where the crystal orientation was aligned with that of the SiC substrate. These results suggest that the periodic nanostructures were formed by periodic etching and not by rearrangement. At high laser power, microstructures with sizes larger than 2 μm were formed on the periodic nanostructures. The microstructures were amorphous and extended from the amorphous SiC layer that covered the periodic nanostructures.

Original languageEnglish
Article number025602
JournalJapanese journal of applied physics
Volume57
Issue number2
DOIs
Publication statusPublished - 2018 Feb

ASJC Scopus subject areas

  • Engineering(all)
  • Physics and Astronomy(all)

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