| 학회 | 한국재료학회 |
| 학술대회 | 2018년 가을 (11/07 ~ 11/09, 여수 디오션리조트) |
| 권호 | 24권 2호 |
| 발표분야 | G. 나노/박막 재료 분과 |
| 제목 | Fabrication of suspended MoS2 nanosheets for in-situ tensile test |
| 초록 | Molybdenum disulphide (MoS2), a true two-dimensional material with intriguing physical and electrical properties, is ideal for nanoelectromechanical systems (NEMS). Researchers are trying to utilize MoS2 to various industrial sectors and to commercialize it, it is essential to guarantee the mechanical reliability by understanding deformation behavior, mechanical properties and interfacial characteristics. However, atomically thin geometry of this material poses a critical challenge in accurate experimental measurement. Although a few experimental methods have been developed by combining mechanical testing systems, an atomic force microscopy and a Raman spectroscopy, they still suffer from certain drawbacks associated with the reliability of measurement results. Here, we report a method to fabricate suspended MoS2 nanosheets for a tensile test that is the most reliable testing method and can provide a simple but precise interpretation of the measurement result without using any assumptions. A poly-methyl methacrylate (PMMA) assisted wet transfer method was developed to transfer a MoS2 flake onto a tensile zig and the transferred flake was clamped by hardening the PMMA via an e-beam lithography. Our method provided a clean, reliable, and controllable way of fabricating micrometer-sized suspended MoS2 nanosheets. We further demonstrated the validity of the developed method by conducting tensile tests inside a transmission electron microscope. |
| 저자 | 라케쉬 사르비드레1, 이창준2, 홍성구2, 김택남1 |
| 소속 | 1배재대, 2한국표준과학(연) |
| 키워드 | <P>suspended MoS<SUB>2</SUB> nanosheet; PMMA hardening; In-situ tensile test</P> |
