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Uncovering the Intrinsic Size Dependence of Hydriding Phase Transformations in Nanocrystals
Revealed fundamental size-dependence of metal nanocrystals undergoing phase transitions.
Significance and Impact
Findings overturn long-held assumptions about nanoparticle behavior and hold important implications for the future design of hydrogen storage systems, catalysts, fuel cells, and batteries.
- Developed a unique optical probe based on luminescence that provided the first direct observations of metal nanocrystals undergoing phase transformations during reactions with hydrogen gas.
- Used statistical mechanical model to quantify the observational data for palladium nanocubes of all sizes.
Rizia Bardhan, Lester O. Hedges, Cary L. Pint, Ali Javey, Stephen Whitelam & Jeffrey J. Urban. Nature Materials Advanced Online Publication (2013).