SOx Tolerant Pt/TiO2 Catalysts for CO Oxidation and the Effect of TiO2 Supports on Catalytic Activity.

We developed a new technique for mitigating catalyst deactivation caused by SO2 in exhaust gases. A series of 0.1 wt %-Pt/TiO2 catalysts with different surface, crystal, and pore structures were prepared and tested for CO oxidation activity in the presence of SO2 and H2O.

Lateral solid-phase epitaxy of oxide thin films on glass substrate seeded with oxide nanosheets.

We developed a technique to fabricate oxide thin films with uniaxially controlled crystallographic orientation and lateral size of more than micrometers on amorphous substrates. This technique is lateral solid-phase epitaxy, where epitaxial crystallization of amorphous precursor is seeded with ultrathin oxide nanosheets sparsely (≈10% coverage) deposited on the substrate. Transparent conducting Nb-doped anatase TiO2 thin films were fabricated on glass substrates by this technique.

Two-photon fluorescence imaging with a pulse source based on a 980-nm gain-switched laser diode.

We developed a compact, high-peak-power picosecond pulse source based on a gain-switched laser diode with an emission wavelength of 980 nm and successfully demonstrated two-photon fluorescence imaging. The pulse source consisted of the gain-switched laser diode, a pulse compressor, a pulse reshaper, and optical amplifiers, all connected by single-mode fibers. The optical pulse generated by the pulse source had a pulse width of 3.