| About this Abstract |
| Meeting |
2025 TMS Annual Meeting & Exhibition
|
| Symposium
|
Structure-Property Relationships in Molecular Crystal Deformation
|
| Presentation Title |
In-situ Mechanical Characterization of Molecular Crystal Materials |
| Author(s) |
Daniel C. Bufford, Danielle Hartstein, Adam Pimentel, Dustin Ellis |
| On-Site Speaker (Planned) |
Daniel C. Bufford |
| Abstract Scope |
Discrete molecules bonded by π effects, van der Waals forces, and other weak interactions form molecular crystals without ionic, covalent, or metallic bonds. Structure-property relationships that govern mechanical behavior for such materials remain less completely understood than in other materials. Small-scale and in-situ mechanical testing approaches have elucidated deformation mechanisms in many classes of materials but have seen less application to molecular crystals; the work presented in this talk explores the viability of these methods for such materials. Individual micron-sized particles of an organic molecular crystal and micropillars fabricated from single crystals of an inorganic salt were compressed to the point of fracture in-situ inside of a scanning electron microscope (SEM). Successes and challenges in sample preparation, structural characterization, mechanical loading experiments, and data interpretation will be discussed. The approaches presented here are broadly applicable and provide new tools to better understand deformation and fracture in these materials. |
| Proceedings Inclusion? |
Planned: |
| Keywords |
Characterization, Mechanical Properties, |