Progress in Auxetic Mechanical Metamaterials: Structures, Characteristics, Manufacturing Methods, and Applications

TLDR

Auxetic mechanical metamaterials (AMMs) are gaining attention for their negative Poisson's ratio and compatibility with advanced manufacturing such as 3D printing, yet a comprehensive review focused on manufacturing methods remains lacking. This review aims to provide a comprehensive synthesis of AMMs’ structures, characteristics, manufacturing methods, applications, challenges, and future directions to guide further development. The authors conduct an extensive literature review of AMMs, compiling information on design, manufacturing techniques, and applications, and summarizing current challenges and future work.

Abstract

Auxetic mechanical metamaterials (AMMs), as an exciting paradigm of metamaterials, have attracted increasing attention due to their interesting mechanical properties (e.g. negative Poisson's ratio), as well as the emergence of advanced manufacturing technology (e.g. 3D printing). Although various reviews on AMMs, their structures, properties, and applications, have existed, it still lacks a comprehensive review in terms of manufacturing methods. Herein, the latest progress in AMMs is extensively reviewed, including AMMs’ structures, characteristics, manufacturing methods, and applications. In addition, the current challenges and future works of AMMs are concluded and discussed. This Review aims to serve as a collection of knowledge that supplies more comprehensive understanding and inspiration to support further developments of AMMs from the perspective of design and manufacturing.