Mesoporous photonic crystals for sensor applications

Alexander Baryshev*, Rintaro Fujikawa, Alexander Khanikaev, Alexander Granovsky, Kwang Ho Shin, Pang Boey Lim, Mitsuteru Inoue

*Corresponding author for this work

Research output: Chapter in Book/Report/Conference proceedingConference proceeding contribution

4 Citations (Scopus)

Abstract

Optical properties of mesoporous three-dimensional photonic crystals (3D PCs) based on thin opal films were found to be extremely sensitive to a humidity of the surrounding air. It was manifested that the internal structure of a single SiO2 sphere together with the net of voids between them in a thin opal film acts as a sponge for wet steams. Our experimental data have shown that hydrophilic internal structure of a mesoporous film sponges up (and lose) water (dry or wet steams) that influences dielectric permittivity, the latter causes significant changes in transmission spectra. High sensitivity, quick response and possibility of contactless measurements makes sensors based on optical effects in mesoporous PCs to be very promising. It concerns not only humidity sensors, but also sensors of various gases, temperature, deformation and other environmental impacts.

Original languageEnglish
Title of host publicationPhotonic Crystals and Photonic Crystal Fibers for Sensing Applications II
Place of PublicationNew York
PublisherSPIE
Number of pages5
ISBN (Print)0819464678, 9780819464675
DOIs
Publication statusPublished - 2006
Externally publishedYes
EventPhotonic Crystals and Photonic Crystal Fibers for Sensing Applications II - Boston, MA, United States
Duration: 3 Oct 20063 Oct 2006

Publication series

NameProceedings of SPIE
PublisherSPIE
Volume6369

Other

OtherPhotonic Crystals and Photonic Crystal Fibers for Sensing Applications II
CountryUnited States
CityBoston, MA
Period3/10/063/10/06

Keywords

  • humidity sensors
  • mesoporous silica
  • photonic crystals

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