@article{Zhang2022, 
author = {Junyu Zhang and Miao Li and Zewen Kang and Bensheng Xiao and Haichen Lin and Jingyu Lu and Haodong Liu and Xue Zhang and Dong-Liang Peng and Qiaobao Zhang},
title = {Atomic mechanisms of hexagonal close-packed Ni nanocrystallization revealed by in situ liquid cell transmission electron microscopy},
year = {2022},
journal = {Nano Research},
volume = {15},
number = {7},
pages = {6772-6778},
keywords = {hexagonal-close-packed (hcp) nanocrystals, liquid cell transmission electron microscopy (TEM), amorphous-phase-mediated, reshape},
url = {https://www.sciopen.com/article/10.1007/s12274-022-4475-3},
doi = {10.1007/s12274-022-4475-3},
abstract = {The fundamental understanding of the mechanism underlying the early stages of crystallization of hexagonal-close-packed (hcp) nanocrystals is crucial for their synthesis with desired properties, but it remains a significant challenge. Here, we report using in situ liquid cell transmission electron microscopy (TEM) to directly capture the dynamic nucleation process and track the real-time growth pathway of hcp Ni nanocrystals at the atomic scale. It is demonstrated that the growth of amorphous-phase-mediated hcp Ni nanocrystals is from the metal-rich liquid phases. In addition, the reshaped preatomic facet development of a single nanocrystal is also imaged. Theoretical calculations further identify the non-classical features of hcp Ni crystallization. These discoveries could enrich the nucleation and growth model theory and provide useful information for the rational design of synthesis pathways of hcp nanocrystals.}
}