Oxide glasses are an integral part of the modern world, but their usefulness can be limited by their characteristic brittleness at room temperature. Megan Cordill et al. show that amorphous aluminum oxide can permanently deform without fracture at room temperature and high strain rate by a viscous creep mechanism. These thin-films can reach flow stress at room temperature and can flow plastically up to a total elongation of 100%, provided that the material is dense and free of geometrical flaws.

Tags: Engineering, Mobility & Transportation, Materials Science

Megan Cordill

Austrian Academy of Sciences

Dr. Megan J. Cordill is the deputy director and senior scientist at the Erich Schmid Institute of Materials Science of the Austrian Academy of Sciences and was the 2008 recipient of the Lise Meitner Fellowship for post-doctoral research in Austria. Dr. Cordill studied materials science and engineering at the University of Minnesota and earned her PhD in 2007. Dr. Cordill’s research interests include thin film adhesion, nanoindentation, structure-properties relationships of thin films, as well as probing electrical, thermal, and mechanical properties using advanced in-situ techniques.

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