نتایج جستجو برای: si 2p spectra
تعداد نتایج: 185217 فیلتر نتایج به سال:
Two-photon excitation fluorescence resonance energy transfer (2P-FRET) imaging microscopy can provide details of specific protein molecule interactions inside living cells. Fluorophore molecules used for 2P-FRET imaging have characteristic absorption and emission spectra that introduce spectral cross-talk (bleed-through) in the FRET signal that should be removed in the 2P-FRET images, to establ...
A number of new solvates and adducts containing bisphenyldimethylaminophosphine oxide is reported. The solvates have the general formula M [ (C6H5) 2P (O) N (CH3) 2 ] 4 2 + (anion") 2 , in which M = Mg, Ca, Mn, Fe, Co, Ni, Cu, Zn and Cd, and the anions are C104~ and BF4". The adducts have the general formula M [ (C8H5) 2P (O) N (CHS) 2 ] 2C12 , where M stands for the same series of metals. The ...
X-ray absorption near edges structure -S) spectra of the Diluted Magnetic Semiconductors @MS) system Zn,&S (M=Mn, CO) have been measured at the M n and CO L,,>-edge using sample current mode. Analysis of the M L3,2-edge XANES spectra for Zn,.&S revealed the presence of a white line feature in each series, whose intensity increased linearly with concentration X. The white line feature is assigne...
An increase in the density of states between the oxygen 2p bands and the Fermi level is seen with increasing Gd concentrations. In addition, for the Gd-doped HfO2 films, the Gd 4f photoexcitation peak at 5.5 eV below the valence band maximum was identified using resonant photoemission. Electrical measurements show pronounced rectification properties for lightly-doped Gd:HfO2 films on p-Si and f...
Indium acetate was analyzed using x-ray photoelectron spectroscopy. The specimen is a powder purchased from Sigma Aldrich. sample fixed to stainless-steel holder with copper 3MTM double-sided adhesive tape. Survey spectra, In 3d, O 1s, C 3p, MNN, and Cl 2p core levels spectra were acquired. Results showed how the elements in structure of indium are related.
This work studies the pseudo-orbital SO(6) symmetry for the first half of the 2p 1 2 -2p 3 2 -1f 5 2 shell (denoted as the pf-shell). The spectra and beta decay are calculated for nuclei Ni, Cu and Zn with A=58, and the comparison to experiment prefers the S̃O(6) limit to the S̃U(3) one. In the calculation of beta decay two types of transformations are employed and the results seem confirm the ad...
X-ray absorption near edge structure spectroscopy has been used to investigate the electronic and atomic structure of vanadium-doped ZnO thin films obtained by reactive plasma. The results show no sign of metallic clustering of V atoms, +4 oxidation state of V, 4-fold coordination of Zn in the films, and a secondary phase (possibly VO2) formation at 15% V doping. O K edge spectra show V 3d–O 2p...
Electrodeposition of Si on substrates such as Ni, Ag and GC from acetonitrile and tetrahydrofuran containing SiCl4 and SiHCl3 as precursors is reported. The deposits readily oxidize on exposure to air but XPS analysis of a deposit withminimum contact with air confirms that elemental Si (2p, 99.5 eV) is electrodeposited. The deposits contained C, O, N and Cl impurities; annealing under argon imp...
The electron-ion recombination rate coefficient for Si IV forming Si III was measured at the heavy-ion storage-ring TSR. The experimental electron-ion collision energy range of 0–186 eV encompassed the 2p6nln l dielectronic recombination DR resonances associated with 3s→nl core excitations, 2s2p63snln l resonances associated with 2s→nl n=3,4 core excitations, and 2p53snln l resonances associate...
X-Ray photoelectron spectroscopy has been extended to colloidal nanoparticles in aqueous solution using a liquid microjet in combination with synchrotron radiation, which allowed for depth-dependent measurements. Two distinct electronic structures are evident in the Si 2p photoelectron spectrum of 7 nm SiO(2)-nanoparticles at pH 10. A core-shell model is proposed where only the outermost layer ...
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