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New interaction potentials for alkaline earth silicate and borate glasses

https://doi.org/10.1016/j.jnoncrysol.2021.120853

Shih, Yueh-Ting; Sundararaman, Siddharth; Ispas, Simona; Huang, Liping (August 2021, Journal of Non-Crystalline Solids)

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Improved Li ⁺ Transport in Polyacetal Electrolytes: Conductivity and Current Fraction in a Series of Polymers

https://doi.org/10.1021/acsenergylett.1c00594

Snyder, Rachel L.; Choo, Youngwoo; Gao, Kevin W.; Halat, David M.; Abel, Brooks A.; Sundararaman, Siddharth; Prendergast, David; Reimer, Jeffrey A.; Balsara, Nitash P.; Coates, Geoffrey W. (May 2021, ACS Energy Letters)

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Tensile ductility and necking in consolidated amorphous alumina

https://doi.org/10.1111/jace.18127

Zhang, Yanming; Liu, Haidong; Sundararaman, Siddharth; Huang, Liping; Shi, Yunfeng (September 2021, Journal of the American Ceramic Society)

Abstract Oxide glass, one of the most transformative materials in the modern world, breaks easily under load due to its brittleness. Using classical molecular dynamics simulations, we prepared amorphous alumina by consolidating glass nanoparticles at room temperature. We showed that consolidated amorphous alumina exhibits work hardening ability, hence deforms homogeneously and fractures via necking under tension, while amorphous alumina obtained from the traditional melt‐quench process fractures catastrophically due to severe shear banding. This finding suggests that if processed properly, amorphous oxides could deform and fracture like ductile metals, which will significantly expand the applications of oxide glasses into new areas where load bearing or mechanical reliability is necessary.
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