21 July 2021: Minglonghai Zhang – Graphene-based auxetic composite materials (recording available)
Minglonghai is working on the development of graphene-based auxetic composite materials. The auxetic materials have negative Poisson’s ratio. They will show an opposite deformation behaviour compared with conventional materials. Some natural materials such as cat skin, cow teat skin etc. had been found to exhibit negative Poisson’s ratio for a long time. Up to date, different types of manmade auxetic materials including foams, textiles and composites have been developed. The auxetic materials have been proven to have special properties such as enhanced energy absorption, better indentation resistance, synclastic curvature, shape fitting and pore opening. This research is expected to comprehensively understand the manufacturing method and the mechanical properties of the graphene-based auxetic composite.
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