The effect niobium oxide has on the macroscopic properties of glass is reasonably well-known, but its specific structural role in glass remains poorly understood. To address this knowledge gap, researchers from the Center for Research, Technology, and Education in Vitreous Materials in Brazil combined spectroscopic data on niobium-containing silicate glasses with advanced computational modeling.
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Initially proposed as a simple pondering by a U.S. chemist in the 1940s, the controversial Kauzmann paradox has inspired hundreds of follow-up papers in a variety of scientific disciplines. Now, researchers in the U.S. and Brazil led by ACerS Fellows Edgar D. Zanotto and John C. Mauro argue it may be best to focus future glass research elsewhere.
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The process by which a crystal nucleates and grows within a glass during heat treatments remains a conceptually ill-understood phenomenon. Researchers in Brazil developed a nuclear magnetic resonance strategy combined with atomistic computer simulations that allowed them to shed unprecedented light on the structural changes that take place in a glass during relaxation and crystal nucleation.
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As part of the IYoG celebrations, ACerS’ “Glass: Then and Now” series is highlighting ACerS journal articles each month that support advancement in glass science and technology. The focus this month is glass-ceramics.
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Researchers trained an artificial neural network to predict glass transition temperatures of never-before-made glass compositions. The software will soon be freely available as a web application.
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The October/November 2017 issue of the ACerS Bulletin—featuring an international ceramic industry report on Southeast Asia, the truth about silicon carbide for modern ceramic armor, and a midpoint update on the activities of an active Brazilian glass research center—is now available online.
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