Seminar & Colloquium
[콜로퀴움: 10월 4일(수), 오후 5시] Prof. Hui-ming Cheng, Chinese Academy of Sciences(CAS)
Title
Graphene and new 2D Materials: From Fabrication to Applications
Speaker
Prof. Hui-ming Cheng, Chinese Academy of Sciences(CAS)
Education
1992. 5. | Ph. D. in Engineering, IMR CAS, China
1987. 5. | M. S. in Engineering, IMR CAS, China
1984. 7. | B. S. in Engineering, Hunan University, Changsha, China
Professional experience
2016. 6. ~ 2021. 3. | Director and Professor, Low-Dimensional Material and Device Laboratory/ Tsinghua-Berkeley Shenzhen Institute, Tsinghua University
2001. 5. ~ 2016. 5. | Director and Professor, Advanced Carbon Division, Shenyang National Laboratory for Materials Science, IMR CAS
1998. 7. ~ 2012. 7. | Deputy Director (three terms), IMR CAS, China
1994. 11. ~ 2001. 5. | Professor, IMR CAS, China
1993. 9. ~ 1994. 10. | Associate Professor, IMR CAS, China
1992. 4. ~ 1993. 8. | Research Associate, Faculty of Engineering, Nagasaki University, Japan.
| Date | Wednesday, October 4th, 2023
| Time | 17:00 ~
| Venue | #101 Bldg. 43(43동 101호)
[Abstract]
Graphene and other 2D materials have unique properties and are expected for various applications. But there are challenges of how to achieve large-scale fabrication of high-quality graphene and other 2D materials.
First, we developed a green electrochemical exfoliation process to produce graphene oxide with high quality and in large quantity. Second, we developed an ambient pressure CVD to synthesize single crystal graphene grains and films. Moreover, we invented an electrochemical bubbling method to transfer these grains and films. Large-area and continuous graphene transparent conductive films are produced by an integrated R2R process of CVD and bubbling transfer. Third, we have developed a template-directed CVD. With Ni foam as template, a 3D graphene macrostructure, so-called graphene foam (GF), has been synthesized.
Both CVD and exfoliation are also powerful methods to obtain other 2D materials such as transition metal disulfides and h-BN. For example, we developed a grinding exfoliation technology with the assistance of intermediaries for efficient exfoliation of layered materials, such as h-BN, black phosphorus, and MoS2, with very high yield and high efficiency. By using CVD, we have grown high quality monolayer WS2 and WSe2 single crystals and films, ultrathin carbide crystals, and a new 2D material of MoSi2N4, which show excellent physical properties.
Finally, the graphene and other 2D materials obtained have been explored to use in many applications, in particular, thermal management and opto/electronic applications.
| Host | Prof. Han Heung Nam(02-880-9240)