Ciclo de Conferencias del Departamento de Física Viernes 3 de diciembre 15:00hs - Sala de Conferencias del Departamento de Física - Subsuelo - Alem 1253
Dr. V. Matolín
Charles University, Faculty of Mathematics and Physics, V Holesovickach 2, 18000 Prague 8, Czech Republic
Metal doped reducible oxides are attractive materials widely used in nowadays catalysts and gas sensing technologies. Physical vapor deposition (PVD) techniques make possible to prepare small systems suitable for use in miniaturized catalytic reactors and gas detectors. Tuning of morphology of porous films deposited on carbon nanotubes or in form of single nanowires on planar substrates makes possible to prepare large variety of systems. Scanning electron microscopy with possibility of object manipulation by using nanomanipulators, electron beam lithography (EBL) and dual beam SEM-FIB microscopes equipped with gas injection system and EDX are powerful tolls of actual nanotechnologies permitting to prepare laboratory prototypes of devices. Hard X-ray synchrotron radiation photoelectron spectroscopy is a new tool of material analysis. Combination of nanotechnology and material science approaches are necessary for developing systems going beyond the current state of the art. Self-organized WOx nanorod gas sensors with electrical contacts made by photo or e-beam lithography, single wire devices with tunable film structure made by PVD/EBL, Pt2,4+-CeO2/CNTs new catalysts for hydrogen fed proton exchange membrane fuel cells, functionalized CNT suitable for gas sensor application and metal-oxide solid solution nanorods grown on graphene are examples of such systems.
La charla sera en inglés pero habrá café y masitas!!!!!