Photoinduced electro-optics measurements of biosilica transformation to cristobalite

Ido Fuchs, Yaniv Aluma, Micha Ilan, Iwan Kityk, Yitzhak Mastai

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In this paper we studied the photoinduced electro optics effects in the thermal transformation process of biosilica to cristobalite, at a relatively low temperature and ambient pressure. This process was characterized by a variety of standards techniques with emphasis on linear electro optic effect measurements. Overall we demonstrated that photoinduced electro optics measurements are very sensitive to the transformation from amorphous structure of silica in the natural sponge samples to laminar string morphology of cristobalite. With this technique we could probe the change in the samples chirality from achiral bio silica to chiral cristobalite structure. Furthermore it is shown that natural biosilica have photoinduced linear electro optics respond indicating the chiral natural of biosilica.

Original languageEnglish
Pages (from-to)231-236
Number of pages6
JournalJournal of Solid State Chemistry
StatePublished - Mar 2015

Bibliographical note

Publisher Copyright:
© 2015 Elsevier Inc.


  • Biomineralization
  • Chiral mesostructure
  • Nonlinear optics
  • Polymorphism
  • Sponges


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