نتایج جستجو برای: electron energy loss spectroscopy

تعداد نتایج: 1449851  

Journal: :Journal of electron microscopy 2005
Yong Ding Zhong Lin Wang

Nanobelts of ZnO have well-defined shapes that are enclosed by {0001}, {0110} and {2110} facets. The nanobelts grow along [0110] and [2110] with large flat surfaces of +/-(0001) and +/-(0110), respectively. Electron energy-loss spectroscopy has been applied to study the electronic structure of ZnO nanobelts of different growth orientations. A plasmon peak observed at 13 eV is suggested to be th...

Journal: :Philosophical transactions. Series A, Mathematical, physical, and engineering sciences 2009
Ondrej L Krivanek Jonathan P Ursin Neil J Bacon George J Corbin Niklas Dellby Petr Hrncirik Matthew F Murfitt Christopher S Own Zoltan S Szilagyi

An all-magnetic monochromator/spectrometer system for sub-30 meV energy-resolution electron energy-loss spectroscopy in the scanning transmission electron microscope is described. It will link the energy being selected by the monochromator to the energy being analysed by the spectrometer, without resorting to decelerating the electron beam. This will allow it to attain spectral energy stability...

2009
Aruna Velamakanni K. J. Ganesh Yanwu Zhu Paulo J. Ferreira Rodney S. Ruoff

Catalyst-free growth of boron carbide nanowires is achieved by pyrolysis of diborane and methane at 650–750 -C and around 500 mTorr in a quartz tube furnace. Electron-diffraction analysis using a novel diffraction-scanning transmission electron microscopy (D-STEM) technique indicates that the crystalline nanowires are single-crystal orthorhombic boron carbide. TEM images show that the nanowires...

Journal: :The Journal of chemical physics 2015
F Ferreira da Silva E Lange P Limão-Vieira N C Jones S V Hoffmann M-J Hubin-Franskin J Delwiche M J Brunger R F C Neves M C A Lopes E M de Oliveira R F da Costa M T do N Varella M H F Bettega F Blanco G García M A P Lima D B Jones

The electronic spectroscopy of isolated furfural (2-furaldehyde) in the gas phase has been investigated using high-resolution photoabsorption spectroscopy in the 3.5-10.8 eV energy-range, with absolute cross section measurements derived. Electron energy loss spectra are also measured over a range of kinematical conditions. Those energy loss spectra are used to derive differential cross sections...

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