نتایج جستجو برای: electron spectroscopy

تعداد نتایج: 446940  

2015
M. K. Kinyanjui G. Benner G. Pavia F. Boucher H.-U. Habermeier B. Keimer U. Kaiser

Articles you may be interested in A reverse Monte Carlo method for deriving optical constants of solids from reflection electron energy-loss spectroscopy spectra Calculated and experimental electron energy-loss spectra of La 2 O 3 , La (OH) 3 , and LaOF nanophases in high permittivity lanthanum-based oxide layers Appl. Studies of electronic structure of ZnO grain boundary and its proximity by u...

H. Haratizadeh M. Najafi

Europium (Eu) doped ZnO microsphere based nano-sheets were synthesized through hydrothermal method. Effects of different concentrations of Europium on structural and optical properties of ZnO nano-sheets were investigated in detail. Prepared un-doped and Eu-doped ZnO samples were characterized using X-Ray diffraction (XRD), energy dispersive X-ray spectroscopy (EDX), scanning electron micro...

2011
S. Mischler

The present study investigated the role of alloy microstructure and surface roughness on wear and friction behavior of leaded and unleaded tin bronzes. Ball-on-disk experiments were carried out under dry conditions with steel balls sliding against bronze disks. Scanning electron microscopy (SEM), energy dispersive electron microscopy (EDX), x-ray photoelectron spectroscopy (XPS) and Auger elect...

Journal: :Nano letters 2008
Albert Dato Velimir Radmilovic Zonghoon Lee Jonathan Phillips Michael Frenklach

We present a novel method for synthesizing graphene sheets in the gas phase using a substrate-free, atmospheric-pressure microwave plasma reactor. Graphene sheets were synthesized by passing liquid ethanol droplets into an argon plasma. The graphene sheets were characterized by transmission electron microscopy, electron energy loss spectroscopy, Raman spectroscopy, and electron diffraction. We ...

1998
A. R. Smith R. M. Feenstra D. W. Greve M. Skowronski J. E. Northrup

Reconstructions of GaN~0001! and ~0001̄! surfaces are studied by scanning tunneling microscopy and spectroscopy, by electron diffraction, by Auger electron spectroscopy, and using first-principles theory. Attention is focused on Ga-rich reconstructions for each surface, which are found to have a metallic character involving significant overlap between Ga valence electrons. The electron counting ...

2007
Naoki Kishimoto Masakazu Yamazaki Yoshinori Hanzawa Takuya Horio Koichi Ohno

By collision-energy/electron-energy-resolved 2D Penning ionization electron spectroscopy as well as by theoretical calculations of the collisional ionization dynamics, the outer shape of molecular orbitals for ionization to X(Σ) and A(Π) states of CO was sensitively probed, and the anisotropy of the interaction between He*(2S) and CO was determined. Ionization to the B(Σ) state of CO was assign...

2009
SriLakshmi Katar AzlinBiaggi Labiosa Amairy E Plaud Edgar Mosquera-Vargas Luis Fonseca Brad R Weiner Gerardo Morell

A dual stage process of depositing bamboo-like carbon nanotubes (BCNTs) by hot filament chemical vapor deposition (HFCVD) and coating Si using Radio frequency sputtering (RFS) technique. The films were characterized by scanning electron microscopy (SEM), transmission electron microscopy (TEM), Raman spectroscopy, X-ray photoelectron spectroscopy (XPS), and electron field emission studies (EFE)....

Journal: :Advanced materials 2012
Nichole Cates Miller Eunkyung Cho Matthias J N Junk Roman Gysel Chad Risko Dongwook Kim Sean Sweetnam Chad E Miller Lee J Richter R Joseph Kline Martin Heeney Iain McCulloch Aram Amassian Daniel Acevedo-Feliz Christopher Knox Michael Ryan Hansen Dmytro Dudenko Bradley F Chmelka Michael F Toney Jean-Luc Brédas Michael D McGehee

The molecular packing in a polymer: fullerene bimolecular crystal is determined using X-ray diffraction (XRD), molecular mechanics (MM) and molecular dynamics (MD) simulations, 2D solid-state NMR spectroscopy, and IR absorption spectroscopy. The conformation of the electron-donating polymer is significantly disrupted by the incorporation of the electron-accepting fullerene molecules, which intr...

1999
A. R. Smith R. M. Feenstra D. W. Greve M.-S. Shin M. Skowronski J. Neugebauer J. E. Northrup

Reconstructions of GaN(0001) and (000 ) surfaces are studied by scanning tunneling microscopy and spectroscopy, by electron diffraction, by auger electron spectroscopy, and using first-principles theory. Attention is focused on Ga-rich reconstructions for each surface, which are found to have metallic character involving significant overlap between Ga valence electrons. The electron counting ru...

Journal: :journal of nanostructures 2015
p. iranmanesh s. saeednia s. rashidi dafeh f. yahyanasab

cd1-xmnxs (x = 0, 0.1, 0.2) nanoparticles, prepared by co-precipitation method under ultrasonic irradiation, were studied by means of x-ray diffraction, scanning electron microscopy, ftir and uv-vis  spectroscopy measurements. the average particle size of nanoparticles from the scanning electron microscopy image is about 20-30 nm. results show that partial substitution of cd by mn leads to a re...

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