Ultralow refractive index coatings consisting of mesoporous silica nanoparticles

Masato Yamaguchi, Hiroyuki Nakayama, Kazuhiro Yamada, Hiroaki Imai

Research output: Contribution to journalArticlepeer-review

39 Citations (Scopus)


Highly porous coatings having ultralow refractive index (n = 1.07) and good transparency were obtained using mesoporous silica nanoparticles. Excellent antireflection performance was achieved with six antireflection layers including the mesoporous film as the top layer. The average reflectance in the entire visible wavelength region (380-780 nm) was 0.04-0.22 % at incident angle of 0°-40°. This facile technique for ultralow reflection coatings is potentially applicable to various optical devices to remove many problems caused by reflection.

Original languageEnglish
Pages (from-to)2060-2062
Number of pages3
JournalOptics Letters
Issue number13
Publication statusPublished - 2009 Jul 1

ASJC Scopus subject areas

  • Atomic and Molecular Physics, and Optics


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