| About this Abstract |
| Meeting |
2020 TMS Annual Meeting & Exhibition
|
| Symposium
|
Recent Advances in Functional Materials and 2D/3D Processing for Sensors and Electronic Applications
|
| Presentation Title |
Understanding 3D-printing Processes through Operando X-ray Photon Correlation Spectroscopy |
| Author(s) |
Maria Torres Arango, Yugang Zhang, Gregory Doerk, Ruipeng Li, Chonghang Zhao, Yu-chen Karen Chen-Wiegart, Andrei Fluerasu, Lutz Wiegart |
| On-Site Speaker (Planned) |
Maria Torres Arango |
| Abstract Scope |
Understanding fundamentals governing materials processing-properties relationships is neuralgic towards realizing functional materials for printed electronics, acknowledging the deposition methods’ influence, inducing anisotropy and material gradients. For extrusion-based direct ink writing, the out-of-equilibrium processing stages may include extrusion, relaxation, drying and curing and are pivotal since they affect the materials defect-development across multiple length scales, and ultimately materials properties.
We perform operando x-ray photon correlation spectroscopy (XPCS) studies of colloidal viscoelastic systems during extrusion-based 3D printing, at the National Synchrotron Light Source II, Coherent Hard X-Ray 11-ID beamline, along with ex-situ rheology and microscopy. We investigate the inks’ nanoscale structure and dynamic evolution in relation to spatial positioning within the printed filament, inks/substrate interactions, colloid structure and re-arrangement, and solvent properties/evacuation; identifying key composition-processing-properties dependences. We expect our work to shed light on fundamentals governing 3D printing processes, furthering the understanding of materials self-assembly towards engineering novel materials with unprecedented performance. |
| Proceedings Inclusion? |
Planned: Supplemental Proceedings volume |