Periodic structures of organic-titania hybrid materials rRecorded by multi-beam laser interference technique

Hiroyo Segawa, Junichi Tabuchi, Kazuaki Yoshida, Shigeki Matsuo, Hiroaki Misawa

Research output: Contribution to journalArticle

1 Citation (Scopus)

Abstract

Photosensitive organic-titania hybrid materials have been prepared from metal alkoxides and various organic ester compounds with $C{=}C$ double bonds. The refractive index of the film increases with the decrease of the concentration of the organic ester compound, and the highest refractive index of 1.62 is obtained when 2-hydroxymethyl acrylate (HOA) is used as the organic ester and the molar ratio of HOA to Ti is 0.5. The material with the highest refractive index is exposed to femtosecond pulse using the multi-beam laser interference technique. After laser irradiation, the irradiated parts of the material are photopolymerized and periodic structures can be obtained by development of the unirradiated parts. In the case of laser irradiation of 120 μ J total energy for 5 min, the periodic structure obtained corresponds to 2D photonic crystal structure which is composed of two parts; the material with the highest refractive index and the air.

Original languageEnglish
Pages (from-to)287-291
Number of pages5
JournalJournal of Sol-Gel Science and Technology
Volume32
Issue number1-3
DOIs
Publication statusPublished - 2004 Dec 1

    Fingerprint

Keywords

  • Multi-beam laser interference
  • Organic-titania hybrid material
  • Periodic structure
  • Photonic crystal
  • Photopolymerization

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Ceramics and Composites
  • Chemistry(all)
  • Biomaterials
  • Condensed Matter Physics
  • Materials Chemistry

Cite this