| About this Abstract |
| Meeting |
2021 TMS Annual Meeting & Exhibition
|
| Symposium
|
Frontiers in Solidification Science VIII
|
| Presentation Title |
Experimental Observations of Mechanisms of Pattern Formation during Freeze Casting |
| Author(s) |
Kaiyang Yin, Kaihua Ji, Louise Strutzenberg, Rohit Trivedi, Alain Karma, Ulrike G.K. Wegst |
| On-Site Speaker (Planned) |
Kaiyang Yin |
| Abstract Scope |
Empirically, many different materials compositions have been freeze cast over the years. Few have been analyzed to better understand the mechanisms by which the ice crystal growth drives structure formation, particularly the substructures on the cell walls. Collating substructural features, for example, ridges, bridges, and “jellyfish"-like substructures, found on the cell walls of freeze-cast ceramics (platelets versus particles), fibrillated biopolymers (collagen, nanocellulose), and "smooth" biopolymers (chitosan, trehalose), we capture the ice crystal growth process and analyze it both in situ in 2D and "post-mortem" in 3D to gain insights into anisotropic ice crystal growth and other self-assembly mechanisms. Combining these experimental observations with 3D Phase-field simulations of structure formation in ice-templated materials, detailed in a companion presentation, it becomes possible to gain fundamental science insights and to obtain the desired structure-property-processing correlations not only at the more traditional macroscopic, but also at the meso- and microscopic scales. |
| Proceedings Inclusion? |
Planned: |
| Keywords |
Solidification, Process Technology, Other |