Materials Literature
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We measured energy distribution and yields of electrons emitted from graphene adsorbed on a Ni(111) surface under the impact of 200–1200 eV electrons. The adsorption of graphene results in significant changes of the spectra of emitted electrons but not of the total emission yields. The electronic structure of the grap…
This study concentrates on the energy states introduced into the band gap of polyethylene by chemical impurities and the resulting implications for hole mobility in PE. The thermal activation energies of polyethylene with iodine impurity, PE, and polypropylene can be predicted from the energy of iodine and carbonyl im…
A new family of Co/rare-earth intermetallic cubane aggregates [Co3Ln(hmp)4(OAc)5H2O] (Ln = Dy, Ho, Er, Tm, Yb, Y) have been synthesized by self-assembly. Single-crystal X-ray diffraction analysis revealed that they are remarkably isostructural in showing a common [Co3Ln] core. Magnetic studies showed that the Dy, Er,…
Abstract We report molecular dynamics (MD) simulations of aqueous solutions of Keggin heteropolyacids XW n – n H 3 O + (XW n – = [PW 12 O 40 ] 3– , [SiW 12 O 40 ] 4– , and [AlW 12 O 40 ] 5– ), the aim of which was to investigate whether the anions increasingly repulse each other in water when their charge increases fr…
Oxy-chromium-dravite, NaCr 3 (Cr 4 Mg 2 )(Si 6 O 18 )(BO 3 ) 3 (OH) 3 O, is a new mineral of the tourmaline supergroup. It is found in metaquartzites of the Pereval marble quarry (Sludyanka, Lake Baikal, Russia) in association with quartz, calcite, chromphyllite, eskolaite, chromite, uvarovite, chromian phlogopite, an…
This paper experimentally evaluates the combined effects of eccentricity, relative spacing, and viewing directions on the wetting conditions and the three-phase contact line shapes of hydrophobic surfaces patterned with discrete micropillars. Different techniques to depict the tortuosity of the contact line between th…
Electron energy-loss spectroscopy (EELS) studies in scanning transmission electron microscopy are widely used to investigate the location and bonding of atoms in condensed matter. However, the interpretation of EELS data is complicated by multiple elastic and thermal diffuse scattering of the probing electrons. Here,…
This paper presents a novel approach to automatically classify the upperwear genre from a full-body input image with no restrictions of model poses, image backgrounds, and image resolutions. Five style elements, that are crucial for clothing recognition, are identified based on the clothing design theory. The correspo…
A novel, two-layer hierarchical architecture based on surface-initiated atom transfer radical polymerization was investigated. It combines a thin and highly dense first layer, for nonfouling properties, with a loose second layer for high immobilization levels of active biomolecules. Sodium azide treatment, to reduce t…
Lanthanide-modified CdSe quantum dots (CdSe(Ln) QDs) have been prepared by heating a solution of Cd(oleate) 2, SeO 2, and Ln(bipy)(S 2 CNEt 2 ) 3 (bipy = 2,2′-bipyridine) to 180–190 °C for 10–15 min. The elemental compositions of the resulting CdSe(Ln) cores and CdSe(Ln)/ZnS core/shell QDs show this route to be highly…
As bimodal magnetic-fluorescent imaging agents, the preparation of ZnS:Tb,Gd and ZnS:Er,Yb,Gd nanoparticles via a facile homogeneous precipitation method is reported. The results show that these nanoparticles are almost spherical in shape with a diameter of 100-200 nm approximately and a major phase of wurtzite-struct…
A single crystalline TiO 2 nanowire grown by a size and position controllable vapor–liquid–solid (VLS) method is a promising candidate to control and design the physical and chemical properties for various TiO 2 -based applications. However, creating TiO 2 nanowires by VLS has been a challenging issue due to a difficu…
Osteoarthritis (OA) is the most prevalent musculoskeletal disease in humans, causing pain, loss of joint motility and function, and severely reducing the standard of living of patients. Cartilage tissue engineering attempts to repair the damaged tissue of individuals suffering from OA by providing mechanical support t…
Transcription factors modulate expression primarily through specific recognition of cognate sequences resident in the promoter region of target genes. AraR (Bacillus subtilis) is a repressor of genes involved in L-arabinose metabolism. It binds to eight different operators present in five different promoters with dist…
Abstract Europium‐containing monomers with different bidentate and tridentate N‐donor ligands carrying norbornoyl side chains and theonyl trifluoroacetylacetonate (TTA) as coligand are obtained and incorporated in random copolymers and amphiphilic block copolymers using ring‐opening metathesis polymerization (ROMP). T…
Carbon nanofibers were synthesized from common solid carbon sources (such as artificial graphites and acetylene black) in the presence of an iron catalyst by direct carbonization. This inexpensive and simple method is expected to trigger a revolution in the preparation of nanocarbons.
This article presents an overview of UHF PD measurements of a generator step-up transformer over a three-year period. Several PD sources are active in the transformer, and fast changes in the PD pattern and levels are observed. An approach for the evaluation of measurement data is introduced, and the long-term develop…
: Because of its optical and electrical properties, large surfaces, and compatibility with standard silicon processes, porous silicon is a very interesting material in photovoltaic and microelectromechanical systems technology. In some applications, porous silicon is annealed at high temperature and, consequently, the…
Quantum-chemical semi-empirical molecular-orbital calculations of zigzag graphene nanoribbons (nzGNRs) were done for the number of zigzag carbon chains n=4 and 10. The antiferromagnetic (AFM) nature of zGNRs' ground state was confirmed. The energy difference between AFM and ferromagnetic (FM) states was calculated, an…
Single-crystal CVD diamond specimens were implanted with 1-MeV He+ ions at fluences ranging from 1014 to 1016 cm−2 and analyzed using coherent acoustic phonon spectroscopy. The coherent acoustic phonon response varies greatly with implantation fluence and provides depth-dependent information about the implantation def…