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New ground-state crystal structure of elemental boron
(American Physical Society, 2016)
Elemental boron exhibits many polymorphs in nature based mostly on an icosahedral shell motif, involving stabilization of 13 strong multicenter intraicosahedral bonds. It is commonly accepted that the most thermodynamic ...
Nucleation of amorphous shear bands at nanotwins in boron suboxide
(Nature Research, 2016)
The roles of grain boundaries and twin boundaries in mechanical properties are well understood for metals and alloys. However, for covalent solids, their roles in deformation response to applied stress are not established. ...
Nanotwinned Boron Suboxide (B6O): New Ground State of B6O
(American Chemical Society, 2016)
Nanotwinned structures in superhard ceramics rhombohedral boron suboxide (R-B6O) have been examined using a combination of transmission electron microscopy (TEM) and quantum mechanics (QM). QM predicts negative relative ...