Phase transitions and dimensional and morphological changes in an ?Aluminum Hydroxide-Alumina? system under a shock-wave action

2005 ◽  
Vol 41 (1) ◽  
pp. 97-105 ◽  
Author(s):  
A. A. Bukaemskii ◽  
N. A. Sosedov ◽  
L. S. Tarasova
Author(s):  
B Mikhailov ◽  
A Mikhailova ◽  
V Nikulin ◽  
P Silin ◽  
I Borovitskaya ◽  
...  

2019 ◽  
Vol 5 (6) ◽  
pp. eaaw5623 ◽  
Author(s):  
Yu Wang ◽  
Xinxing Peng ◽  
Alex Abelson ◽  
Penghao Xiao ◽  
Caroline Qian ◽  
...  

The behavior of individual nanocrystals during superlattice phase transitions can profoundly affect the structural perfection and electronic properties of the resulting superlattices. However, details of nanocrystal morphological changes during superlattice phase transitions are largely unknown due to the lack of direct observation. Here, we report the dynamic deformability of PbSe semiconductor nanocrystals during superlattice phase transitions that are driven by ligand displacement. Real-time high-resolution imaging with liquid-phase transmission electron microscopy reveals that following ligand removal, the individual PbSe nanocrystals experience drastic directional shape deformation when the spacing between nanocrystals reaches 2 to 4 nm. The deformation can be completely recovered when two nanocrystals move apart or it can be retained when they attach. The large deformation, which is responsible for the structural defects in the epitaxially fused nanocrystal superlattice, may arise from internanocrystal dipole–dipole interactions.


2019 ◽  
Vol 1404 ◽  
pp. 012083
Author(s):  
V L Kocharin ◽  
A D Kosinov ◽  
A A Yatskikh ◽  
L V Afanasev ◽  
Yu G Ermolaev ◽  
...  

2021 ◽  
pp. 114309
Author(s):  
Valentina Mochalova ◽  
Alexander Utkin ◽  
Andrey Savinykh ◽  
Gennady Garkushin

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