| 학회 |
한국재료학회 |
| 학술대회 |
2021년 가을 (11/24 ~ 11/26, 경주 라한호텔) |
| 권호 |
27권 2호 |
| 발표분야 |
특별심포지엄 7. 여성위원회 특별세션-오거나이저: 박상희(KAIST) |
| 제목 |
Metal-Graphene Nanolayered Composite and Career Path in the Field of Nanomechanics |
| 초록 |
Nanoscale metal-graphene nanolayered composite is known to have ultra high strength due to its ability to effectively block dislocations from penetrating through the metal-graphene interface. The same graphene interface can simultaneously serve as a barrier interface for deflecting the fatigue cracks that are generated under cyclic bendings. Cu-graphene composite with repeat layer spacing of 100 nm indicated ~5 times enhancement in robustness against fatigue induced damage in comparison to the conventional Cu only thin film. Fatigue induced cracks that are generated within the Cu layer were stopped by the graphene interface, which was confirmed using transmission electron microscopy images acquired ex-situ as well as during in-situ tensile test. Molecular dynamics simulations for uniaxial tension of Cu-graphene showed limited accumulation of dislocations at the film/substrate interface, which makes the fatigue induced crack formation and propagation through thickness of the film difficult in this materials system. Robustness against bending fatigue-induced damage makes this material well-suited for the flexible electrode application, and methods for enhancing the scalability of fabrication will also be discussed. In this talk at the Women in Science session, I will briefly discuss the career path that I have taken in the field of nanomechanics. |
| 저자 |
Seung Min Jane Han |
| 소속 |
Department of Material Science and Engineering |
| 키워드 |
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| E-Mail |
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