Extreme mechanical resilience of self-assembled nanolabyrinthine materials
Abstract
Nano- and microarchitected materials to date have relied on additive manufacturing techniques to produce beam-, plate-, and shell-based architectures that achieve highly desired mechanical properties while being limited to low-throughput volumes as well as to periodic and symmetric designs that deteriorate if symmetry-breaking defects are present. Here, we demonstrate the fabrication of nano-architected materials via scalable self-assembly processes with features that span across multiple scales—from nanometers to centimeters. Through experiments and simulations, we show that the smooth, doubly curved, shell-based geometries achieved through this process can surpass truss-based architectures in terms of energy absorption, stiffness-to-density response, and especially, mechanical resilience through an unprecedented combination of material size effects and optimal topology.
Document Details
- Document Type
- Pub Defense Publication
- Publication Date
- Mar 04, 2020
- Source ID
- 10.1073/pnas.1916817117
Entities
People
- A. Vidyasagar
- Carlos M Portela
- Daryl W Yee
- Dennis Kochmann
- Julia R. Greer
- Sebastian Krödel
- Tamara Weissenbach
Organizations
- California Institute of Technology
- ETH Zurich
- Office of Naval Research
- United States Department of Defense