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Full Description
This thesis describes the development of in-situ cinematographic recording techniques for investigating phase dynamics using nanoparticles (NPs) as model systems. The suitable experimental platform realized the simultaneous high spatial and temporal resolution for in-situ observations of phase transitions. The impact of increased surface energy on phase stability in NPs drives phase dynamics under ambient conditions. By leveraging this, nano-specific polymorphs and the energy profile of structural fluctuation on NPs of inorganic compounds were identified at atomic resolution in real space. The surface energy-driven phase dynamics revealed here provide new guidelines for controlling nanomaterial structures and expanding the scope of future material exploration.
Contents
Chapter 1. Introduction.- Chapter 2. Transitions between Molecules and Crystals: Molecular Dynamics in Crystal Growth and Sublimation on the Surface.- Chapter 3. Structural Phase Transition Induced by the Size Change of Nanocrystals.- Chapter 4. Non-Deterministic Structural Fluctuation in Crystal Nucleation and Phase Transition.- Chapter 5. Summary and Outlook.



