On the origin of auxetic behaviour in the silicate α-cristobalite

Name: Work Video:
Duration: 3 min 30 s
Description: The experimentally observed negative Poisson's ratios in the silicate α-cristobalite are explained through a two-dimensional 'rotation of rigid units' model involving 'rotating rectangles' hence providing a new insight into the way nature can achieve this unusual property.
Joseph N. Grima; Ruben Gatt; Andrew Alderson; K. Evans
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