| About this Abstract |
| Meeting |
2021 TMS Annual Meeting & Exhibition
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| Symposium
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Functional Nanomaterials: Functional Low-dimensional Materials (0D, 1D, 2D) Driving Innovations in Electronics, Energy, Sensors, and Environmental Engineering and Science 2021
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| Presentation Title |
Janus Monolayer-Induced Abnormal Mechanical and Optical Properties in 2D Heterostructures |
| Author(s) |
Shengxi Huang |
| On-Site Speaker (Planned) |
Shengxi Huang |
| Abstract Scope |
Janus transition metal dicalcogenide (TMD) is a newborn of the 2D materials family. Its structure is similar to TMDs such as MoS2, but one layer of chalcogen is different from the other layer, one example being MoSSe. Due to the unique crystal structure of Janus TMD, unconventional phenomena have been theoretically predicted, including out-of-plane piezoelectricity and exciton disassociation by the intrinsic out-of-plane dipole moment. In this talk, I will discuss the fundamental phonon, excitonic, and optical properties of Janus monolayer and related heterostructures. Unintuitively, interlayer coupling strength in the heterostructures is stronger than their pure TMD counterparts, due to a combination of strain and intrinsic dipole in Janus layer. In addition, the vertical dipoles are observed to affect nonlinear and linear optical response of the heterostructures. These findings can lead to low dimensional devices with functionalities inaccessible from conventional 2D materials. |
| Proceedings Inclusion? |
Planned: |