Zobrazeno 1 - 10
of 24
pro vyhledávání: '"V. K. Medvedev"'
Cluster formation and distributions in field ionization of coadsorbed methanol and water on platinum
Publikováno v:
Surface Science. 650:130-139
Pure and mixed clusters of methanol and water were examined with pulsed field desorption time-of-flight mass spectrometry (TOF-MS) as a function of adlayer composition varying from pure water to nominally pure methanol. The experiments were performed
Publikováno v:
ECS Transactions. 35:19-28
Surface reactions of ethylene and toluene on a Pt-modified, samarium-doped ceria (Pt/CSO) anode were examined as a function of hydrocarbon to oxygen ratio and cycling of oxy- gen ion current through the electrolyte. Reaction conditions were temperatu
Publikováno v:
ECS Transactions. 35:2761-2769
Distributions in reacting species during oscillations of methane oxidation were studied to obtain information on the relative rates of electrocatalysis and reforming. Spontaneous oscillations in total pressure and current occur for reaction at 637 °
Publikováno v:
Surface and Interface Analysis. 39:161-165
Fluctuations of the local ion rate of Li + ions emitted during in situ monitoring of the catalytic CO oxidation on the nanofacets of a Pt field emitter tip with a lithium field desorption-microscope (Li-FDM) are utilized to study the Li surface diffu
Publikováno v:
Surface Science. 600:1579-1585
Global and local oscillations in the CO oxidation reaction have been visualized in situ on the apex of a [1 0 0]-oriented Pt field emitter tip used as a well-defined model for catalytically active, nm-sized particles by Field Emission (FEM) and Lithi
Publikováno v:
Journal of Electroanalytical Chemistry. :133-143
Water ionization and desorption of protonated water clusters in high electric fields were studied on a Pt emitter tip in ultrahigh vacuum. Ramped field desorption (RFD) experiments were carried out at 109 and 145 K. As the tip potential was linearly
Publikováno v:
Surface Science. 501:169-181
Water ion cluster formation in high electric fields was characterized on a Pt emitter tip over temperatures ranging from 170 to 300 K. Ion clusters emitted from the field-adsorbed water layer were mass resolved using a Wien filter. Two series of test
Publikováno v:
Thin Solid Films. :766-771
A novel deposition sequence has been developed for the growth of carbon-free, amorphous titanium dioxide thin films on p-type Si(100) using titanium tetrakis–isopropoxide (TTIP) as the metalorganic precursor. The deposition process occurs in an ult
Publikováno v:
Surface Science. 457:365-376
Field ionization of vapor-deposited water on a platinum field emitter tip was studied over a temperature range of 103–150 K. Water adlayers 50–3600 A thick were grown under field-free conditions by exposure of a cryogenically cooled emitter tip t
Publikováno v:
Ultramicroscopy. 79:239-244
Selected areas of a clean or Li-doped Rh field emitter tip were studied by low-temperature O + 2 -FIM and Li + -FDM in order to reveal the promoting influence of Li on the early stages of the oxidation process. The experiments were conducted by graph