نتایج جستجو برای: electron affinity
تعداد نتایج: 391405 فیلتر نتایج به سال:
The B3LYP/6-311+G(d)-SDD method, which considers the relativistic effect of bromine, was adopted for the calculations of the selected polybrominated diphenyl ethers (PBDEs) in the present study, in which the B3LYP/6-311+G(d) method was also applied. The calculated values and experimental data for structural parameters of the selected PBDEs were compared to find the suitable theoretical methods ...
We found monochromatic electron photoemission from large-area self-assembled monolayers of a functionalized diamondoid, [121]tetramantane-6-thiol. Photoelectron spectra of the diamondoid monolayers exhibited a peak at the low-kinetic energy threshold; up to 68% of all emitted electrons were emitted within this single energy peak. The intensity of the emission peak is indicative of diamondoids b...
A general model is presented for electron emission yield from planar photocathodes that accounts for arbitrary cathode thickness and finite recombination velocities at both front and back surfaces. This treatment is applicable to negative electron affinity emitters as well as positive electron affinity cathodes, which have been predicted to be useful for energy conversion. The emission model is...
Many image segmentation algorithms first generate an affinity graph and then partition it. We present a machine learning approach to computing an affinity graph using a convolutional network (CN) trained using ground truth provided by human experts. The CN affinity graph can be paired with any standard partitioning algorithm and improves segmentation accuracy significantly compared to standard ...
Three different procedures are used to deposit aluminium onto O-terminated (100) and (111) boron-doped diamond, with the aim of producing a thermally stable surface low work function negative electron affinity. The methods 1) deposition > 20 nm film Al by high-vacuum evaporation followed HCl acid wash remove excess metallic Al, 2) <3 Å atomic layer deposition, 3) thin-film beam evaporation. str...
Several improvements are added to the MicroElec extension of Geant4 in order track very low energy electrons, protons and ions different materials. The interaction processes for extended down 1 keV/nucleon, a few eVs corresponding electron affinity or work-function selected material. Surface electrons added, along with electron–phonon interactions SiO2. models validated silicon several new mate...
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