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