| About this Abstract |
| Meeting |
2024 TMS Annual Meeting & Exhibition
|
| Symposium
|
Nano and Micro Additive Manufacturing
|
| Presentation Title |
Aerosol Jet 3D Printed Multi-layered Stretchable Decals for Biomonitoring Applications |
| Author(s) |
Jacob Brenneman, Derya Tansel, Gary Fedder, Rahul Panat |
| On-Site Speaker (Planned) |
Rahul Panat |
| Abstract Scope |
Nanoparticle 3D printing and sintering is a promising method to achieve freeform interconnects on compliant substrates. Previous strategies to sinter metallic nanoparticles while preserving the soft polymer substrate are rife with problems such as cracking and low conductivity of the metallic features. In this work, we demonstrate a multi-layered Aerosol-jet 3D printed stretchable decal system that can capture human electrocardiogram (EKG) signals with high fidelity. A strategy involving 3D printing of heterogeneous materials to get a stiffness gradient was applied to prevent cracks and delamination in the system. A problem of interconnect cracking was observed and solved using the hypothesis that presence of air during a low temperature drying step of the decal fabrication reduced the capillary stress to produce crack-free interconnects with high conductivities (up to 56% of bulk metal). Stretchability of the decals is then demonstrated followed high-fidelity capture of human EKG signals. |
| Proceedings Inclusion? |
Planned: |
| Keywords |
Additive Manufacturing, Thin Films and Interfaces, Characterization |