|About this Abstract
||2018 TMS Annual Meeting & Exhibition
||Nanocomposites V: Structure-Property Relationships in Nanostructured Materials
||Ultra-high Elastic Strain Energy Storage in Hybrid Metal-oxide Infiltrated Polymer Nanocomposites
||Keith Dusoe, Xinyi Ye, Kim Kisslinger, Aaron Stein, Seok-Woo Lee, Chang-Yong Nam
|On-Site Speaker (Planned)
An understanding a material’s ability to store/release elastic strain energy is of great significance in the effective miniaturization of actuators, sensors and resonators for use in micro-/nano-electromechanical systems (MEMS/NEMS). The modulus of resilience (R) expresses the energy per unit volume a material can store and is typically difficult to engineer, as large R values requires increases in the material’s yield strength yet conservative increase in Young’s modulus. Here, we present a hybrid nanocomposite which achieves the highest specific R ever reported, by utilizing vapor-phase aluminum oxide infiltrations into SU-8, a polymer photoresist. In-situ nanomechanical measurements reveal high, metallic-like yield strengths (~500 MPa) combined with a polymeric-like Young’s modulus (~7 GPa). This unique pairing or properties is realized by the unique microstructure of our nanocomposite. The ultra-high R of this material is attributed to the composite’s unique microstructure in which an inorganic strengthening phase infiltrates and occupies the polymer matrix.
||Planned: Supplemental Proceedings volume