| About this Abstract |
| Meeting |
2020 TMS Annual Meeting & Exhibition
|
| Symposium
|
Mechanical Response of Materials Investigated through Novel In-situ Experiments and Modeling
|
| Presentation Title |
Shape Fidelity and Mechanical Response in Micro Pattern Replication by Molding |
| Author(s) |
Bin Zhang, Mohammad Dodaran, Shuai Shao, Junseo Choi, Sunggook Park, Wenjin Meng |
| On-Site Speaker (Planned) |
Mohammad Dodaran |
| Abstract Scope |
Forming nano-/micro- patterns on metal surfaces by compression molding with patterned punches has potential applications to microsystem technologies. Geometric fidelity and mechanical response of molding are of critical importance. We highlight these issues through a series of instrumented double-punch molding experiments, which show that the plastic flow to fill the gap between two identically dimensioned rectangular strip punches and the characteristic molding pressure exhibit various mechanical size effects as the characteristic dimension decreases from ~100µm to ~1 µm. Accompanying 3D and 2D plane-strain elasto-plastic finite element analyses, based on conventional and strain gradient plasticity, have been performed to provide insights on the effects of punch aspect ratio, spacing, friction, and material length scale on this particular metal forming process. Our results shed light on design considerations for molding replication at the microscale, and illustrate the peculiarities of materials’ response when molding replication is pushed to micron dimensions |
| Proceedings Inclusion? |
Planned: Supplemental Proceedings volume |