Shape transformation and surface melting of cubic and tetrahedral platinum nanocrystals

Article Abstract:

A study was conducted to analyze in-situ temperature-induced shape changes and melting properties of polymer-capped cubic and tetrahedral nanocrystals. Transmission electron microscopy was performed to carry out the analysis. A thermocouple attached to a furnace was utilized to determine temperatures. Experimental results indicated that the as-synthesized platinum nanocrystals showed no truncation until the temperature reached -350 degrees C.

Usage, Transmission electron microscopes, Platinum compounds

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Energetics of the nanocrystalline titanium dioxide/aqueous solution interface: approximate conduction band edge variations between H0= -10 and H_ = +26

Article Abstract:

A study was conducted to analyze conduction band energies for nanocrystalline TiO2(anastase) electrodes in contact with aqueous electrolytes. A reflectance technique was utilized to carry out the analysis. Potentials were controlled using the PAR 273 potentiostat linked to a three-electrode cell. Results indicated that the pH independence was correlated to an eventual decoupling of proton intercalation from electron addition.

Titanium dioxide, Electrodes

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Grain-growth kinetics of nanocrystalline iron studied in situ by synchrotron real-time X-ray diffraction

Article Abstract:

It has been possible to accumulate a significant volume of high-quality, real-time diffraction data on the grain-growth kinetics of nanocrystalline metals. All the data are compatible with a monomodal log-normal grain-size distribution.

X-rays, X-ray diffraction

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