Ultrafast charge carrier dynamics of SnO2 nanoclusters: a refined interpretation of the electron-hole kinetics in metal oxides

Article Abstract:

The ultrafast charge carrier reactions of SnO2 nanoclusters were investigated in femtosecond experiments. To this end, the elementary charge carrier dynamics of electron trapping and electron-hole recombination was examined using an ultraviolet pump intensity approach. Experimental results showed that thermalization plays a significant role in the electron-trapping dynamics as shown by the increase in the decay time due to excess excitation energy above the conduction band.

author: Cavaleri, Joseph J., Colombo, D. Philip, Jr., Bowman, Robert M.
Tin compounds, Metallic oxides, Metal oxides, Charge transfer, Electron mobility

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Influence of salt on hydrophobic effects: a molecular dynamics study using the modified hydration-shell hydrogen-bond model

Article Abstract:

The hydrogen-bond (H-bond) contributions to hydrophobic hydration in pure and saltwater are investigated using Muller's modified hydration-shell hydrogen-bond model. Results show that H-bonds formed between water molecules in the hydration shell of nonpolar solutes are stronger and more ordered compared to those between water molecules in the bulk. A net input of energy and decrease in order are also essential for H-bond formation in the hydration shell of nonpolar solutes.

author: Mancera, Ricardo L.
Analysis, Hydration, Rehydration solutions, Hydrogen, Chemical bonds

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Modified surface nanoscale explosion: effects of initial condition and charge flow

Article Abstract:

Research into surface nanoscale explosion due to slow highly charged ion-surface interactions is presented. In this model, surface ionization arises at a finite rate, with surface changes being permitted to flow into the substrate at various rates simultaneously.

author: Hedstrom, Magnus, Cheng, Hai-Ping
Models, Nanotechnology

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subjects list: Research, Molecular dynamics
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