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May 11, 2023 (Thu) Professor Hyeonseop Lim

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Speaker Professor Hyunseop Lim (GIST Department of Chemistry)
Date Thursday, May 11, 2023
Time 5:00 PM
Venue Asan Science Hall 331

Surface Chemistry on Two-Dimensional Materials

 

   Research interest into two dimensional (2D) materials other than graphene has recently become intense, first because of the basic desire of researchers to explore new worlds in two dimensions from the point of view of materials research, and second to avoid the drawbacks of graphene for certain applications. Compared to metallic property of graphene, hexagonal boron nitride (h-BN) and transition metal dichalcogenides (TMDs) have insulating and semiconducting properties, respectively. Therefore, these 2D materials can be widely used for various applications regarding to their unique properties.  

   Herein, I present the recent research results working on various 2D materials like graphene,1 h-BN2,3 and TMDs.4,5 The presentation includes the improved synthetic methods of 2D materials and their electrical and optical applications. Especially, the novel method for periodically aligned hydroxyl groups on graphene and systematic investigation regarding mechanism of single crystal TMD synthesis will be introduced.

 

 

References

1. Lim, H.*; Park, Y.;Lee, M.; Ahn, J.; Li, B. W.; Luo, D., Jung, J.*; Ruoff, R. S.*; Kim, Y.* Nano Lett. 20, 2107. (2020)

2. Kim, G.; Kim, M.; Hong, S.; Hyun, C; Ma, K. Y.; Shin, H. S.*; Lim, H.*, ACS Nano 10, 11156. (2016).

3. Ahn, C.(§); Park, Y.(§); Shin, S.; Ahn, J.-G.; Song, I.; An, Y.; Jung, J.; Kim, C. S.; Kim, J. H.; Bang, J.; Kim, D.; Baik, J.; Lim, H.* ACS Appl. Mater. Interfaces 13, 6805. (2021)

4. Ahn, J.-G.; Yeo, G.; Han, Y.; Park, Y.; Hong, J. W.; Lim, H.*, ACS Appl. Meter. Interfaces 13, 42176. (2021)

5. Park, Y.(§); Ahn, C.; Ahn, J.-G.; Kim, J. H.; Jung, J.; Oh, J.; Ryu, S.; Kim, S. C.; Kim, T.; Lim, H.*, ACS Nano 17, 1196. (2023)


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