Thumbnail
Access Restriction
Open

Author Fuchs, Ido ♦ Aluma, Yaniv ♦ Ilan, Micha ♦ Kityk, Iwan ♦ Mastai, Yitzhak
Source United States Department of Energy Office of Scientific and Technical Information
Content type Text
Language English
Subject Keyword INORGANIC, ORGANIC, PHYSICAL AND ANALYTICAL CHEMISTRY ♦ AMORPHOUS STATE ♦ CHIRALITY ♦ CRISTOBALITE ♦ CRYSTAL STRUCTURE ♦ CRYSTALS ♦ ELECTRO-OPTICAL EFFECTS ♦ HEAT TREATMENTS ♦ MORPHOLOGY ♦ NONLINEAR OPTICS ♦ PHASE TRANSFORMATIONS ♦ SILICA
Abstract 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. - Graphical abstract: The phase transformation of biosilica from marine sponges to Cristobalite under thermal treatment was investigated using photoinduced electro optics measurements. The figure shows the changes of the electro-optic coefficient of cristobalite and biosilica. - Highlights: • We examine phase transformation of biosilica. • We report transition from amorphous biosilica to crystalline Cristobalite. • Biosilica transformation to Cristobalite at temperature of 850 °C. • Biosilica transformation is studied with photoinduced measurements. • We examine changes in the photoinduced linear electro optics properties.
ISSN 00224596
Educational Use Research
Learning Resource Type Article
Publisher Date 2015-03-15
Publisher Place United States
Journal Journal of Solid State Chemistry
Volume Number 226


Open content in new tab

   Open content in new tab