|About this Abstract
||2017 TMS Annual Meeting & Exhibition
||Multiscale Architectured Materials (MAM II): Tailoring Mechanical Incompatibility for Superior Properties
||Materials by Design: 3-Dimensional Nano-Architected Meta-Materials
||Julia R Greer, Lucas Meza, Alessandro Maggi, Victoria Chernow, Xiaoxing Xia
|On-Site Speaker (Planned)
||Julia R Greer
Creation of extremely strong yet ultra-light materials can be achieved by capitalizing on hierarchical design of 3-dimensional nano-architectures. These nanolattices exhibit superior thermomechanical properties at extremely low mass densities because the constituent size (nanometers to microns) is comparable to characteristic microstructural material length scale. We developed a process to fabricate 3-dimensional nanolattices whose relevant dimensions span from nanometers to microns, with overall dimensions of ~1cm. We discuss deformation, mechanical properties, and energy absorption in nanolattices made from different materials and deformed in an in-situ nanomechanical instrument. Attention is focused on interplay between internal microstructural length scale of materials and external limitations, where competing material- and structure-induced size effects drive overall properties. We focus on metallic, ceramic, and glassy nanolattices and discuss their properties in the framework of mechanics and physics of defects. Specific applications include biomedical devices, ultra lightweight batteries, photonics, damage tolerance, and flaw (in)sensitivity in fracture.