We present a new nanoscale imaging technique based on detecting backscattered ions from a lithium focused ion beam (FIB). Scanning ion microscopes are of general interest as they provide image contrast that differs from scanning electron microscopes (SEM), as has been demonstrated with the traditional gallium FIB and the helium ion microscope [1]. Like helium, the low mass of lithium makes it i...

Using the field ion microscope as a flow reactor the catalytic oxidation of hydrogen by O2 on Pt has been studied by the ToF coincidence technique. The "imaging ions" consist mainly of H30+. less H20+ and to some extent field and coverage sensitive 02+ species. The product ion spectrum qualitatively coincides with that of pure water field desorbed at 300 K. On the oxygen side of the H2/02/Pt sy...

A new strategy for enhancing the efficiency of TiO2 dye-sensitized solar cells (DSSCs) by doping foreign ion into TiO2 lattice via sol-gel process is reported. DSSCs are based on a semiconductor (i.e., TiO2), formed between a photo-sensitized anode and an electrolyte. In order to reach high conversion efficiency, it is important to increase the electron injection and optical absorption. One pro...