Mechanical Metamaterials and Their Engineering Applications

Research output: Journal Publications and Reviews (RGC: 21, 22, 62)21_Publication in refereed journalpeer-review

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  • Huifeng Du
  • Xiang Li
  • Xiang Xiong
  • Nicholas Xuanlai Fang


Original languageEnglish
Article number1800864
Journal / PublicationAdvanced Engineering Materials
Issue number3
Online published4 Jan 2019
Publication statusPublished - Mar 2019


In the past decade, mechanical metamaterials have garnered increasing attention owing to its novel design principles which combine the concept of hierarchical architecture with material size effects at micro/nanoscale. This strategy is demonstrated to exhibit superior mechanical performance that allows us to colonize unexplored regions in the material property space, including ultrahigh strength-to-density ratios, extraordinary resilience, and energy absorption capabilities with brittle constituents. In the recent years, metamaterials with unprecedented mechanical behaviors such as negative Poisson's ratio, twisting under uniaxial forces, and negative thermal expansion are also realized. This paves a new pathway for a wide variety of multifunctional applications, for example, in energy storage, biomedical, acoustics, photonics, and thermal management. Herein, the fundamental scientific theories behind this class of novel metamaterials, along with their fabrication techniques and potential engineering applications beyond mechanics are reviewed. Explored examples include the recent progresses for both mechanical and functional applications. Finally, the current challenges and future developments in this emerging field is discussed as well.

Research Area(s)

  • 3D printing, mechanical metamaterial, microlattice, nanomanufacturing, nanomechanics, origami, structural materials

Citation Format(s)

Mechanical Metamaterials and Their Engineering Applications. / Surjadi, James Utama; Gao, Libo; Du, Huifeng et al.
In: Advanced Engineering Materials, Vol. 21, No. 3, 1800864 , 03.2019.

Research output: Journal Publications and Reviews (RGC: 21, 22, 62)21_Publication in refereed journalpeer-review