Affiliation:
1. California Institute of Technology Division of Engineering and Applied Science, , Pasadena, CA 91125
2. Northwestern University Department of Mechanical Engineering, , Evanston, IL 60208
Abstract
Abstract
Mechanical metamaterials, whose unique mechanical properties stem from their structural design rather than material constituents, are gaining popularity in engineering applications. In particular, recent advances in self-assembly techniques offer the potential to fabricate load-bearing mechanical metamaterials with unparalleled feature size control and scalability compared to those produced by additive manufacturing (AM). Yet, the field is still in its early stages. In this perspective, we first provide an overview of the state-of-the-art self-assembly techniques, with a focus on the copolymer and colloid crystal self-assembly processes. We then discuss current challenges and future opportunities in this research area, focusing on novel fabrication approaches, the need for high-throughput characterization methods, and the integration of Machine Learning (ML) and lab automation for inverse design. Given recent progress in all these areas, we foresee mechanical metamaterials fabricated from self-assembly techniques impacting a variety of applications relying on lightweight, strong, and tough materials.
Funder
Air Force Office of Scientific Research
National Science Foundation
Office of Naval Research
Subject
Mechanical Engineering,Mechanics of Materials,Condensed Matter Physics