Joseph N. Grima, Ruben Gatt, Andrew Alderson and Kenneth E. Evans
J. Mater. Chem., 2005,15, 4003-4005
DOI:
10.1039/B508098C,
Communication
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.
