|About this Abstract
||2017 TMS Annual Meeting & Exhibition
||Pan American Materials Congress: Advanced Biomaterials
||An Approach to Study Materials-structure Relationships in Bio-inspired Microstructures
||Alejandro Gutierrez, Lilian Davila
|On-Site Speaker (Planned)
Diatoms, microscopic algae with intricate porous shell morphologies, have been proposed as templates for drug delivery carriers, optical devices and metamaterials design. Several studies have found diatom shells show unique mechanical properties such as high specific strength and resilience. One hypothesis is that these properties stem from the structural arrangement of the material at the nanometer and micrometer scales, challenging the concept of what constitutes a “material” versus a “structure”. We have conducted a systematic simulation-prototyping study on the mechanics of diatom-inspired hierarchical microstructures. The Finite Element Method was used to replicate 3-D diatom shells under compressive forces. The intricate hierarchical structure observed in nature was reproduced in detail. A Coscinodiscus species frustule model was created, and the resulting mechanical response was compared to measurements. Simulation parameters were selected to reproduce nanoindentation experiments. Additionally, select designs were prototyped using Direct Laser Writing to evaluate the feasibility of manufacturing diatom-inspired devices.
||Planned: Stand-alone book in which only your symposium’s papers would appear (indicate title in comments section below)