CANCELED: Attend an intelligentsia of nano-architected hierarchical materials seminar, April 12
Join the School of Manufacturing Systems and Networks as they host Julia Greer, professor of materials science and mechanics at Caltech, for a seminar on intelligentsia of nano-architected hierarchical materials.
Agenda:
- 10:30–11 a.m. Meet the speaker.
- 11–11:50 a.m. Seminar.
Abstract
Creation of reconfigurable and multi-functional materials can be achieved by incorporating architecture into material design. In our research, we design and fabricate three-dimensional nano-architected materials that can exhibit superior and often tunable thermal, photonic, electrochemical, biochemical and mechanical properties at extremely low mass densities (lighter than aerogels), which renders them useful and enabling in technological applications. Dominant properties of such meta-materials are driven by their multi-scale hierarchy: from characteristic material microstructure (atoms) to individual constituents (nanometers) to structural components (microns) to overall architectures (millimeters and above). Our research is focused on the fabrication and synthesis of nano- and micro-architected materials using 3D lithography, nanofabrication and additive manufacturing, or AM, techniques, as well as on investigating their mechanical, biochemical, electrochemical, electromechanical and thermal properties as a function of architecture, constituent materials and microstructural detail. AM represents a set of processes that fabricate complex 3D structures using a layer-by-layer approach, with some advanced methods attaining nanometer resolution and the creation of unique, multifunctional materials and shapes derived from a photoinitiation-based chemical reaction of custom-synthesized resins and thermal postprocessing. A type of AM, vat polymerization, has allowed for using hydrogels as precursors and exploiting novel material properties, especially those that arise at the nano-scale and do not occur in conventional materials. The focus of this talk is on additive manufacturing via vat polymerization and function-containing chemical synthesis to create 3D nano- and microarchitected metals, ceramics, multifunctional metal oxides (nano-photonics, photocatalytic, piezoelectric, etc.) and metal-containing polymer complexes, etc., as well as demonstrate their potential in some real-use biomedical, protective and sensing applications.
About the speaker
Greer’s research focuses on creating and characterizing nano- and micro-architected materials with multi-scale microstructural hierarchy using 3D lithography, nanofabrication and AM techniques to investigate their mechanical, electrochemical, chemo-mechanical and photonic properties as a function of architecture, constituent materials and microstructural detail. We strive to uncover the synergy between the internal atomic- and molecular-level microstructure and the multi-scale external dimensionality, where competing material- (nano) and structure- (architecture) induced size effects drive overall response and govern these properties. Specific topics include applications of 3D nano- and micro-architected materials in devices, energy absorption, ultralightweight energy storage systems, chemically-assisted filtering, damage-tolerant fabrics, additive manufacturing and multi-functional materials. Greer obtained her bachelor’s degree in Chemical Engineering with a minor in Advanced Music Performance from MIT in 1997 and a doctoral degree in Materials Science from Stanford, worked at Intel (2000-03) and was a post-doc at PARC (2005-07). Julia joined Caltech in 2007 and currently is a Ruben F. and Donna Mettler Professor of Materials Science, Mechanics and Medical Engineering at Caltech, as well as the Fletcher Foundation Director of the Kavli Nanoscience Institute and the Editor in Chief of the Journal of Applied Physics.
Follow Julia Greer on Linkedin
Intelligentsia of nano-architected hierarchical materials.
Friday, April 12, 2024
10:30–11:50 a.m.
Technology Center (TECH) 162, Polytechnic campus [map]