News Column

Findings from University of Jena in the Area of Nanoparticles Described

March 7, 2014



By a News Reporter-Staff News Editor at Science Letter -- A new study on Nanoparticles is now available. According to news reporting from Jena, Germany, by NewsRx journalists, research stated, "The formation and growth of nanosized CaF2 crystallites by heat treatment of an oxyfluoride glass of composition 7.65Na(2)O-7.69K(2)O-10.58CaO-12.5CaF(2)-5.77Al(2)O(3)-55.8SiO(2) (wt%) was investigated using anomalous small-angle X-ray scattering (ASAXS). A recently developed vacuum version of the hybrid pixel detector Pilatus 1M was used for the ASAXS measurements below the Ca K-edge of 4038 eV down to 3800 eV."

The news correspondents obtained a quote from the research from the University of Jena, "ASAXS investigation allows the determination of structural parameters such as size and size distribution of nanoparticles and characterizes the spatial distribution of the resonant element, Ca. The method reveals quantitatively that the growing CaF2 crystallites are surrounded by a shell of lower electron density. This depletion shell of growing thickness hinders and finally limits the growth of CaF2 crystallites."

According to the news reporters, the research concluded: "Moreover, in samples that were annealed for 10 h and more, additional very small heterogeneities (1.6 nm diameter) were found."

For more information on this research see: ASAXS study of CaF2 nanoparticles embedded in a silicate glass matrix. Journal of Applied Crystallography, 2014;47():60-66. Journal of Applied Crystallography can be contacted at: Wiley-Blackwell, 111 River St, Hoboken 07030-5774, NJ, USA. (Wiley-Blackwell - www.wiley.com/; Journal of Applied Crystallography - onlinelibrary.wiley.com/journal/10.1111/(ISSN)1600-5767)

Our news journalists report that additional information may be obtained by contacting A. Hoell, University of Jena, Otto Schott Inst Glaschem, D-07743 Jena, Germany. Additional authors for this research include Z. Varga, V.S. Raghuwanshi, M. Krumrey, C. Bocker and C. Russel (see also Nanoparticles).

Keywords for this news article include: Jena, Europe, Germany, Minerals, Silicates, Silicic Acid, Nanotechnology, Emerging Technologies

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Source: Science Letter


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