Visualization of Charge Migration in Conductive Polymers via Time-Resolved Electrostatic Force Microscopy.

Charge dynamics play an important role in numerous natural phenomena and artificial devices, and tracking charge migration and recombination is crucial for understanding the mechanism and function of systems involving charge transfer. Tip-synchronized pump-probe electrostatic force microscopy simultaneously permits highly sensitive detection, microsecond time resolution, and nanoscale spatial resolution, where the spatial distribution in static measurement (usual EFM) reflects differences in the carrier density and the time evolution reveals the surface carrier mobility. By using this method, carrier injection and ejection in sulfonated polyaniline (SPAN) thin films were visualized.

Chemical Control of Electronic Coupling between a Ruthenium Complex and Gold Electrode for Resonant Tunneling Conduction.

Current-voltage (-) nonlinearity is essential for information processing in molecular electronics. We used a nanoparticle bridge junction to investigate the effect of electronic coupling between a Ru complex and electrodes on nonlinear electrical properties. Two types of molecular layers, in which the Ru complex forms different chemical bondings to the electrode, were used for electrical measurements.

Supported binary CuO -Pt catalysts with high activity and thermal stability for the combustion of NH as a carbon-free energy source.

Recently, NH has been thought to be a renewable and carbon-free energy source. The use of NH fuel, however, is hindered by its high ignition temperature and NO/NO production. To overcome these issues, in this study, the combustion of NH over copper oxide (CuO ) and platinum (Pt) catalysts supported on aluminium silicates (3AlO·2SiO), aluminium oxides (AlO), and silicon oxides (SiO) were compared.

Resonant tunneling via a Ru-dye complex using a nanoparticle bridge junction.

Nonlinear current-voltage (I-V) characteristics is an important property for the realization of information processing in molecular electronics. We studied the electrical conduction through a Ru-dye complex (N-719) on a 2-aminoethanethiol (2-AET) monolayer in a nanoparticle bridge junction system. The nonlinear I-V characteristics exhibited a threshold voltage at around 1.