Transparent microporous silica by the sol-gel process

L. C. Klein, T. A. Gallo, G. J. Garvey

Research output: Contribution to journalArticlepeer-review

1 Scopus citations


The sol-gel process is a chemical approach to making optical materials at low temperature. Through hydrolysis and condensation reactions, a metal alkoxide such as tetraethyl-orthosilicate (TEOS) is converted largely to high surface area silica gel at room tempera-ture. After drying, the result is a rigid monolithic shape of bulk density about half that of conventional fused silica. The reduced weight of the shape is due to interconnected microporosity. The average pore size is generally smaller than 10 nm, and the material is transparent to visible light.

Original languageEnglish (US)
Pages (from-to)70-74
Number of pages5
JournalProceedings of SPIE - The International Society for Optical Engineering
StatePublished - Dec 26 1984

All Science Journal Classification (ASJC) codes

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics
  • Computer Science Applications
  • Applied Mathematics
  • Electrical and Electronic Engineering


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