About this Abstract |
| Meeting |
2026 TMS Annual Meeting & Exhibition
|
| Symposium
|
Nano and Micro Additive Manufacturing
|
| Presentation Title |
Multifunctional Microscale Metamaterials: Acoustic and Magnetic Functionality |
| Author(s) |
Carlos M. Portela, Rachel Sun, Andrew Chen, Mohammad Charara, Jet Lem, Yiming Ji, Daryl Yee |
| On-Site Speaker (Planned) |
Carlos M. Portela |
| Abstract Scope |
Over the past decade, micro- and nanoscale metamaterials have shown how engineered microstructures enable unique mechanical properties. Recent advances in fabrication and characterization have expanded their functionality, particularly in acoustic and magnetic domains. Acoustic behavior remains underexplored due to measurement challenges at small scales, while magnetic functionality is limited by the size mismatch between hard-magnetic particles (~40 µm) and typical manufacturable microscale features (~10 µm). To address these challenges, we use two-photon lithography to create microscale metamaterials with tailored acoustic and magnetic responses. First, we design structures with decoupled mass and stiffness by embedding micro-inertia in the printing process, and characterize their tunable elastic wave speeds using custom laser-based techniques. For magnetic functionality, we develop a fabrication method combining two-photon lithography and iron-oxide nanoparticle co-precipitation to produce 3D microscale architectures with programmable magnetic properties via spatially controlled nanoparticle distribution—all in a single step. |
| Proceedings Inclusion? |
Planned: |
| Keywords |
Additive Manufacturing, Process Technology, Magnetic Materials |