Elucidating the ionomer-electrified metal interface.

The competitive adsorption of Nafion functional groups induce complex potential dependencies (Stark tuning) of vibrational modes of CO adsorbed (CO(ads)) on the Pt of operating fuel cell electrodes. Operando infrared (IR) spectroscopy, polarization modulated IR spectroscopy (PM-IRRAS) of Pt-Nafion interfaces, and attenuated total reflectance IR spectroscopy of bulk Nafion were correlated by density functional theory (DFT) calculated spectra to elucidate Nafion functional group coadsorption responsible for the Stark tuning of CO(ads) on high surface area fuel cell electrodes. The DFT calculations and observed spectra suggest that the side-chain CF3, CF2 groups (i.

Neodymium-YAG laser treatment of intrabronchial lesions. A new mapping technique via the flexible fiberoptic bronchoscope.

We report the results of the treatment of 45 patients (38 with malignant and seven with benign disease) with intrabronchial lesions using the neodymium-YAG laser via the flexible fiberoptic bronchoscope. Multiple treatment sessions were used with treatment intervals varying from four days to four weeks. Additional debridement procedures were also necessary in select cases.