The mechanisms and kinetics behind the anti-sintering behavior of supported metal nanoparticles under ultrafast heating remain unclear. Here, in situ scanning transmission electron microscopy and theoretical analysis reveal an ultrafast-heating–induced metastable state that suppresses thermal sintering while enhancing crystallinity of the metal nanoparticles and their interfaces.
- Jiawei Huang
- Zhouyang Zhang
- Linfeng Fei