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discover.mst/2011/03/the-art-and-science-of-glass-blowing.html

Structure and Properties of Phosphate Glasses Richard K. Brow, Missouri University of S&T, DMR 0305202.

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discover.mst/2011/03/the-art-and-science-of-glass-blowing.html

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  1. Structure and Properties of Phosphate Glasses Richard K. Brow, Missouri University of S&T, DMR 0305202 Outcome: Researchers at Missouri S&T and their collaborators have validated models of phosphate glass structures that can be used to design new compositions for a variety of engineering applications. Impact: A detailed understanding of the compositional dependence of the molecular-level structures of glasses makes it possible to engineer compositions for specific applications, reducing the development time and expediting the discovery process. Explanation: The conventional picture of the structure of oxide glasses combines a well-defined coordination environment for the glass-forming polyhedra (silicate, borate, phosphate, etc.) with more randomly distributed, structurally ill-defined modifying cations (MC). Uwe Hoppe (Rostock Univ. in Germany) developed a theory for the structures of phosphate glasses that assumes specific MC coordination environments that depend on MC size and charge. In collaboration with the research team at Missouri S&T, lead by Curators’ Professor Richard Brow, that theory has been validated for a wide-range of phosphate glass compositions. Richard Brow (r) and Uwe Hoppe have collaborated on a series of papers that connect the structure and properties of phosphate glass

  2. New Phosphate Materials for Optical and Biomedical Applications Richard K. Brow, Missouri , Missouri University S&T, DMR 0305202 Scientific Highlight (2010-2011): The ‘Hoppe Model’ for rare earth (RE)-doped phosphate glass structures was recently applied in the design of new compositions for optical substrates processed by femto-sec lasers (in collaboration with Denise Krol, UC-Davis). The top left photo shows an example of an RE-doped waveguide from this collaboration. Charmayne Smith is the student who designs and fabricates the glasses. A second area involves the formation of nanocrystalline RE-doped phosphate meso-materials, like the fractured, hollow micro-sphere shown in the top right photo. These materials form by a low temperature dissolution-precipitation process. Jaime George is the student who is developing the reaction models for this process. Charmayne Smith (l) and Jaime George (r), PhD candidates in the MSE Dept. at Missouri S&T are members of the NSF-supported phosphate materials research team

  3. The Hot Glass Studio: Bridging Art and ScienceRichard K. Brow, Missouri , Missouri University S&T, DMR 0305202 The NSF supported Dr. Mary Reidmeyer (right, with student)to develop demonstrations and materials that utilize the Hot Glass Studio operated by the MSE Department on the Missouri S&T campus. Student-led discussions of materials science principles involving color, nucleation and crystallization, stress and thermal shock are held during demonstrations of glass-blowing techniques (below). http://discover.mst.edu/2011/03/the-art-and-science-of-glass-blowing.html

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