Alderson, "Auxetics and other systems of 'negative' characteristics," Physica Status Solidi (b) Basic Research, vol.
Materials with negative Poisson's ratio (NPR) are called auxetic materials [4-7].
Biodegradable polymer scaffolds are widely used in tissue engineering, but there are few reports on auxetic biodegradable scaffolds [28, 29].
Auxetic scaffold specimens were prepared by a volumetric restriction method.
For all groups, prepared auxetic scaffolds were employed and the seeded cell density was 2.2 x [10.sup.5] cells/80 [micro]L.
Another class of applications of auxetics is based on the sound absorbing properties of auxetic materials, which make them interesting for both civil and military applications.
Another molecular network is twisted-chain auxetics, in which auxetic behaviour arises due to a soft shear deformation mode for helical polyacetylene chains formed from adjacent chains in a coupled polydiacetylene chain network [2,3].
Molecular auxetics basically address overall weaknesses that are inherent in auxetic microstructures.
The technique of topology optimization has been used for designing microstructural auxetics. This technique takes into account nonconvexity issues.
In case of counterintuitive behavior of auxetic material, it undergoes lateral expansion when stretched longitudinally and becomes thinner when compressed [2, 3].
Auxetics are materials with a negative Poisson's ratio.
US Patent 8,277,719 (October 2, 2012), "Process for the Preparation of Auxetic Foams," Andrew Alderson, Kim Lesley Alderson, Philip John Davies, and Gillian Mary Smart (Auxetic Technologies Ltd., Great Britain).