Stretchable and negative-Poisson-ratio porous metamaterials

Highly stretchable porous materials are promising for flexible electronics but their fabrication is a great challenge. Herein, several kinds of highly stretchable conductive porous elastomers with low or negative Poisson's ratios are achieved by uniaxial, biaxial, and triaxial hot-pressing strategies. The reduced graphene oxide/polymer nanocomposite elastomers with folded porous structures obtained by uniaxial hot pressing exhibit high stretchability up to 1200% strain. Furthermore, the meta-elastomers with reentrant porous structures combining high biaxial (or triaxial) stretchability and negative Poisson's ratios are achieved by biaxial (or triaxial) hot pressing. The resulting elastomer-based wearable…

• NN
  National Natural Science Foundation of China

  Awards: 62074111,62374113, 62374113, 2021-01, 62074111, 2022YFB3203500
• SM
  Shanghai Municipal Education Commission

  Award: 2021-01-07-00-07-E00096
• NK
  National Key Research and Development Program of China

  Awards: 2022YFB3203500, 2021-01
• FR
  Fundamental Research Funds for the Central Universities

  Award: 22120230224