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MoS2 Liquid Cell Electron Microscopy Through Clean and Fast Polymer-Free MoS2 Transfer
Developed MoS2 liquid cells for in situ TEM studies of Pt-MoS2 heterostructure formation.
Significance and Impact
Liquid cells using 2D MoS2 as a functional substrate and membrane window allow the direct observation of Pt nanocrystal growth on the MoS2 substrate, and can be applied to other systems.
- A novel facile MoS2 transfer process without the need for polymer protection produces clean MoS2 membranes with high yield.
- MoS2 membranes of three layers (∼2 nm) thickness were found to be ideal for the development of liquid cells.
- In-situ TEM studies revealed the growth kinetics and van der Waals epitaxy of Pt nanocrystals on the MoS2 substrate.
J. Yang, M. K. Choi, Y. Sheng, J. Jung, K. Bustillo, T. Chen, S.-W. Lee, P. Ercius, J. H. Kim, J. H. Warner, E. M. Chan, H. Zheng, Nano Letters (2019) DOI: 10.1021/acs.nanolett.8b04821