نتایج جستجو برای: auger electron spectroscopy
تعداد نتایج: 450078 فیلتر نتایج به سال:
در این پژوهش نحوه ساخت نانوکامپوزییت eva/ag و اثر ضد میکروبی آن در درصدهای مختلف نانو ذره نقره مورد بررسی قرار گرفته است.نانوکامپوزیت حاصل از نطر شکل شناختی ، اندازه ذرات، ساختمان شیمیایی ، با استفاده از تستهای sem(scanning electrou microscopy)،tem (transmission electron microscope) ، xrd (x-ray fluorescence spectroscopy) ،ftir (fourier transform infrared spectroscopy) مورد ارزیابی قرار گرفت. د...
Heating of a silicon single crystal introduces a surface roughness. Crystals are heated for periods of 45 set in the temperature range from 560 to 1150°C. Using ellipsometry, Auger electron spectroscopy, mass spectroscopy and micrography it has been shown that the changes in the ellipsometric parameters are caused by surface roughness which in turn is strongly related to the sublimation of sili...
Auger photoelectron coincidence spectroscopy (APECS) confirms that a substantial part of the lowenergy tail of the L» VV Auger lines of the 3d transition metals is due to intrinsic initialand final-state shake-up/shake-off processes and not just secondary losses. Data were collected for the L» VV Auger lines of pure Cu, Co, and Ni. APECS enables a direct experimental measurement of the initial-...
This study examined the effects of different treatments (polished, electropolished, and grit-blasted) on the surface morphology and chemistry of commercially pure titanium and titanium-6% aluminum-4% vanadium. The structure and composition of the surfaces were evaluated using scanning electron microscopy, atomic force microscopy, energy dispersive spectroscopy, Auger microprobe analysis, and x-...
For the first time, both X-ray Photoelectron Spectroscopy (XPS) and Auger Electron Spectroscopy (AES) techniques were applied in analysis of surface contamination of electrochemically etched Scanning Tunneling Microscope (STM) tungsten tips. Carbon monoxide, graphite, tungsten carbide and tungsten oxide were found as main surface contaminations of STM tungsten tips. The thickness of tungsten ox...
Ultra-thin SiO2 films were prepared by evaporating Si onto a Mo~112! surface followed by oxidation and annealing up to 1200 K. The surface structure and film quality were investigated by low-energy electron diffraction ~LEED!, Auger spectroscopy ~AES!, and high-resolution electron energy loss spectroscopy ~HREELS!. A well-ordered, monolayer Mo(112)-c(232)-SiO2 structure was characterized by HRE...
Molecules often fragment after photoionization in the gas phase. Usually, this process can only be investigated spectroscopically as long as there exists electron correlation between the photofragments. Important parameters, like their kinetic energy after separation, cannot be investigated. We are reporting on a femtosecond time-resolved Auger electron spectroscopy study concerning the photofr...
چکیده ندارد.
We report on the stepwise generation of layered nanostructures via electron beam induced deposition (EBID) using organometallic precursor molecules in ultra-high vacuum (UHV). In a first step a metallic iron line structure was produced using iron pentacarbonyl; in a second step this nanostructure was then locally capped with a 2-3 nm thin titanium oxide-containing film fabricated from titanium ...
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