Materials Literature
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This work investigates the impact of porosity in low- κ dielectric materials on the chemical and structural properties of deposited Mn thin films for copper diffusion barrier layer applications. X-ray photoelectron spectrscopy (XPS) results highlight the difficulty in distinguishing between the various Mn oxidation st…
We report magnetotransport studies on microstructured ZnO film grown by pulsed laser deposition in N2 atmosphere on a-plane Al2O3 substrates and the effect of low energy H+-implantation. Non-linearity has been found in the magnetic field dependent Hall resistance, which decreases with temperature. We explain this effe…
Graphite oxide nanosheets (GONs) and the copolymer of GONs with methacrylic acid (MAA) and sodium allyl sulfonate (SAS) (poly(GON–MAA–SAS)) were prepared. The GONs in poly(GON–MAA–SAS) are smaller and uniformly dispersed, allowing them to penetrate into collagen fibers of leather and produce better tanning effects tha…
The fracture behavior of isotactic polypropylene (iPP) specimen with double-notched shape under a fixed elongation speed at room temperature is described. Over 100 tensile tests were performed, and the statistic fracture data were obtained for the tensile condition. The statistical data of fracture were obtained by ex…
This study investigated the use of the electrochemical method to prepare alumina (a-Al2O3) from aluminum metal. The a-Al2O3 precursor was calcined at 110 °C for six hours and then characterized using Fourier Transform Infrared (FTIR) spectroscopy, Particle Size Analysis (PSA), X-Ray Diffraction spectroscopy (XRD), and…
We report electrical transport properties of carbon nanostructures with close-packed spherical voids. Under zero magnetic field, a non-metallic behavior is observed. With increasing magnetic field, magnetoresistance (MR) crosses over from quadratic to linear dependence. Longitudinal response, typically negligible in m…
Nature provides us with great inspiration for the development of new materials and molecules by showing us the breadth and range of possibilities that can be achieved. One such area is the use of metal ions for catalysis of chemical reactions, transport of molecules and the formation of materials. This is all achieved…
An inelastic neutron scattering study of the spin waves corresponding to the stripe antiferromagnetic order in insulating ${\mathrm{Rb}}_{0.8}{\mathrm{Fe}}_{1.5}{\mathrm{S}}_{2}$ throughout the Brillouin zone is reported. The spin wave spectra are well described by a Heisenberg Hamiltonian with anisotropic in-plane ex…
We show that superconductivity can arise in semiconductors with a band in the shape of a Mexican hat when the chemical potential is tuned close to the band edge, but not intersecting the band, as long as interactions are sufficiently strong. Hence, this is an example where superconductivity can emerge from a band insu…
In this paper, we describe a model for maximum likelihood estimation (MLE) of the relative abundances of different conformations of a protein in a heterogeneous mixture from small angle X-ray scattering (SAXS) intensities. To consider cases where the solution includes intermediate or unknown conformations, we develop…
The new type of a p-i-n structure consists of a single acceptor doped ZnO:N film grown by plasma assisted molecular beam epitaxy, a thin isolating Al 2 O 3 layer grown by atomic layer deposition method and n -type GaN template. The maximum forward-to-reverse current ratio I F / I R in the obtained diode is about 8 × 1…
The temperature dependences of the fundamental excitonic resonance in PbS and PbSe quantum dots fabricated by various technologies are experimentally determined. Above ∼150 K, sub-linearities of the temperature shifts and halfwidths are observed. This behavior is analyzed within the existing standard models. Concordan…
In recent decades, cryogenic treatment has been used as the finishing operation between the quenching and tempering treatment on tool steels for the purpose of increasing hardness and wear resistance. H13 tool steel is a hot working steel widely used in manufacturing molds and hot working tools. In this research, the…
$^{19}\mathrm{F}$ NMR measurements in optimally electron-doped ${\mathrm{La}}_{1\text{\ensuremath{-}}y}{\mathrm{Y}}_{y}{\mathrm{Fe}}_{1\text{\ensuremath{-}}x}{\mathrm{Mn}}_{x}{\mathrm{AsO}}_{0.89}{\mathrm{F}}_{0.11}$ superconductors are presented. The effect of Mn doping on the superconducting phase is studied for two…
Fluorescence studies of natural photosynthetic complexes on a graphene layer demonstrate pronounced influence of the excitation wavelength on the energy transfer efficiency to graphene. Ultraviolet light yields much faster decay of fluorescence, with average efficiencies of the energy transfer equal to 87% and 65% for…
Resistance of solid tumors to treatment is significantly attributed to pharmacokinetic reasons at both cellular and multi-cellular levels. Anticancer agent must be bio-available at the site of action in a cytotoxic concentration to exert its proposed activity. Solid tumor tissue is characterized by high density of vas…
Pulsed metal organic chemical vapor deposition is used to epitaxially grow 30-nm thick tetragonal Pb(ZrxTi1−x)O3 thin films on (100) KTaO3 single crystal substrates. The in-plane misfit strain, which is controlled by the Zr/(Zr+Ti) ratio of Pb(ZrxTi1−x)O3 thin films, tunes the film orientation. When Zr/(Zr+Ti) = 0, wh…
Abstract In the study, we successfully produced electrospun cellulose fibers crosslinked with β-CD. For electrospinning, cellulose was dissolve in 1-ethyl-3-methylimidazolium acetate and DMF was added to the prepared solution for better spinnability. The prepared cellulose fiber was immersed in the solution containing…
Borated stainless steels are used in nuclear power plants due to their high capacity to absorb thermal neutrons. Borated Stainless Steels are being used to control neutron criticality in reactors as control rods, shielding material, spent fuel storage racks and transportation casks. In the present study, an attempt ha…
The layered compound ${\mathrm{CePd}}_{1\ensuremath{-}x}{\mathrm{Bi}}_{2}$ with the tetragonal ${\mathrm{ZrCuSi}}_{2}$-type structure was obtained from excess Bi flux. Magnetic susceptibility data of ${\mathrm{CePd}}_{1\ensuremath{-}x}{\mathrm{Bi}}_{2}$ show an antiferromagnetic ordering below 6 K and are anisotropic…