ArticleScience advances2025
Exploiting multiscale dynamic toughening in multicomponent alloy metamaterials for extreme impact mitigation.
Article in Science advances, 2025. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 8 papers.
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Who cites it
8 citing papers in PubMed.
- Material-architecture-manufacture integrated strategy for piezoelectric metamaterials with mechanical protection and self-powered sensing.Science advances · 2026Article
- Bioinspired Mechanical Structures for Load Bearing and Energy Absorption: Cross-Scale Design and Fabrication Strategies.Biomimetics (Basel, Switzerland) · 2026Review
- Metamaterials from Plasma-Treated Block Copolymer Monolith.ACS applied materials & interfaces · 2026Article
- The Fracture Mechanism of Impact-Resistant Bionic 3D Model Structures Inspired by Composite Structure of Mantis Shrimp Appendage.Biomimetics (Basel, Switzerland) · 2026Article
- Design framework for programmable three-dimensional woven metamaterials.Nature communications · 2026Article
- Crystallography-inspired hierarchical multiscale mechanical metamaterials.NPJ metamaterials · 2026Article
- Biocompatibility of Materials Dedicated to Non-Traumatic Surgical Instruments Correlated to the Effect of Applied Force of Working Part on the Coronary Vessel.Materials (Basel, Switzerland) · 2025Article
- Bio-inspired material-structure-function integrated additive manufacturing of Al-based metamaterials with surpassing energy absorption.Science advances · 2025Article
Corrections and comments
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Authors and funding
11 authors.
Funding
No grant is acknowledged in the PubMed record.
Abstract
Mechanical metamaterials can unlock extreme properties by leveraging lightweight structural design principles and unique deformation mechanisms. However, research has predominantly focused on their quasi-static characteristics, leaving their behavior under extreme dynamic conditions, especially at length scales relevant to practical applications largely unexplored. Here, we present a strategy to achieve extreme impact mitigation at the macroscale by combining shell-based microarchitecture with an additively manufactured medium-entropy alloy (MEA) featuring low stacking fault energy (SFE). Notably, the shell-based architecture amplifies the effective dynamic stress within the metamaterial compared to truss-based morphologies, leading to the earlier activation of multiscale toughening mechanisms in the alloy. The low SFE of the MEA enables the evolution of a diverse array of defect types, thereby prolonging strain hardening behavior across seven orders of magnitude in strain rate. These fundamental insights could establish the groundwork for developing scalable, lightweight, impact-resistant metamaterials for structural and defense applications.
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Registered trials
Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the OpenQuestion graph.