نتایج جستجو برای: si 2p spectra
تعداد نتایج: 185217 فیلتر نتایج به سال:
Investigations of chemical bonding and electronic structure features for polycrystalline (porphyrinato)nickel (II) (NiP, the simplest Ni porphyrin), (5,10,15,20-tetraphenylporphyrinato)nickel (II) (NiTPP) and (2-aza-21-carba-5,10,15,20-tetraphenylporphyrinato)nickel (II) (N-confused NiTPP, NiNCTPP) have been performed by means of high-resolution soft x-ray absorption and x-ray photoemission spe...
The electronic structure for the conduction bands of both hexagonal and orthorhombic LuFeO3 thin films have been measured using x-ray absorption spectroscopy at oxygen K (O K) edge. Dramatic differences in both the spectral features and the linear dichroism are observed. These differences in the spectra can be explained using the differences in crystal field splitting of the metal (Fe and Lu) e...
We present the spectral evolution, light curve, and corresponding interpretation for the “normal-bright” Type Ia Supernova 2005cg discovered by ROTSE-IIIc. The host is a low-luminosity (Mr = −16.75), blue galaxy with strong indications of active star formation and an environment similar to that expected for SNe Ia at high redshifts. Early-time (t ∼ −10 days) optical spectra obtained with the HE...
Contents: SI Table 1: Primer and capture probe sequences SI Fig. 1: Evolution of the measured drag force with the size of the optically trapped array of beads SI Fig. 2: Evolution of the time-averaged power delivered to each bead as a function of the array size and evolution of the maximum array size with increasing input power SI Fig. 2: Fluorescence absorption and emission spectra for...
Isotopic enrichment of 29Si and DNP-enhanced NMR spectroscopy are combined to determine the detailed surface structure of a silicated alumina catalyst. The significant sensitivity enhancement provided by DNP is vital to the acquisition of multinuclear and multidimensional experiments that provide information on the atomic-level structure of the species present at the surface. Isotopic enrichmen...
Auger electron spectroscopy is used to follow the initial chemisorption of oxygen on a Si(lOO)-2 x 1 surface. Careful measurements of the Si L,sVV spectra reveal, for the first time, fine structure in the region between 80 and 85 eV. For the clean Si(100) surface a peak at 81 eV has been found. Oxygen chemisorption on the Si(100) surface is associated with the appearance of a new well defined p...
Cryogenic x-ray photoelectron spectroscopy was used to analyze the cell envelope of intact and hydrated Gram-negative bacteria species Pseudomonas fluorescens. We a reference strain, DSM50090, from German microbial culture collection, which we previously have suggested would function well as strain for future XPS analyses bacteria. Bacteria were grown on nutrient agar plates at room temperature...
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