Materials Literature
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X-ray absorption (resonant) photoelectron spectroscopy has been employed to investigate electronic structure of Eu atomic wires encapsulated in single-wall carbon nanotubes (SWCNTs). The measurements reveal that there is a substantial electron transfer of $+$1.79 $\ifmmode\pm\else\textpm\fi{}$ 0.11 from a Eu atom to t…
Nitride-based metal/semiconductor superlattices are promising candidates for high-temperature thermoelectric applications. Motivated by recent experimental studies, we perform first-principles density functional theory based analysis of electronic structure, vibrational spectra and transport properties of HfN/ScN meta…
BACKGROUND: Chemokine receptor 4(CXCR4) plays an important role in the potential growth of pancreatic tumor and its ability to develop metastasis. Ultrasmall superparamagnetic iron oxide (USPIO) nanoparticles offer strong contrast-enhancing effect for MR imaging of pancreatic tissue. PURPOSE: To establish a biomarker-…
Abstract Background Development of bacterial strains that can utilize cheap and renewable carbon substrate will make the prices of poly(3‐hydroxybutyrate‐ co ‐4‐hydroxybutyrate) [P( 3HB ‐ co ‐ 4HB )] competitive with synthetic plastics. Disposal of glycerine pitch, which is a scheduled waste from the oleochemicals ind…
Regular tetrahedra have been demonstrated recently giving high packing density in random configurations. However, it is unknown whether the random-packing density of tetrahedral particles with other shapes can reach an even higher value. A numerical investigation on the random packing of regular and irregular tetrahed…
We studied the ultrafast dynamic behavior of the photoinduced insulator–metal phase transition in VO2 thin film using optical pump–terahertz probe spectroscopy with different excitation fluences and at different temperatures. We observed two processes in the insulator–metal phase transition in VO2: a fast process and…
Abstract Utilization of the perfluoroarene‐arene interaction for stabilization of liquid crystal phases is reviewed. This interaction is strong (3.7–5.6 kcal/mol), but it is difficult to generate stable liquid crystal phases by using it. From the examples in this review, it is strongly suggested that flatness of the m…
Ba/Sr‐based zirconates and cerates appear as potential proton conducting electrolytes for water electrolysers, hydrogen fuel cells and CO2/syngas converters. Such application requires long lifetime of each components: a good chemical and thermal stability of the device core and a low reactivity of the electrolyte memb…
Abstract This review article provides a bird’s‐eye view on discotic liquid crystals and their potential applications. Design principles, synthesis, modification of physical properties and potential applications of some common discotic liquid crystals have been briefly summarized.
Polyesters are being widely applied in different fields of life due to their excellent characteristics. A book "Polyester" comprises 16 chapters covering synthesis, characterization and applications of polyester. Chemical and biological methods for synthesis of polyester were one of the most important points of resear…
To explore the novel properties of carbon nanoparticles (CNPs) in nanotoxicity assays, the adsorption of phenol red (a pH indicator for culture medium) by multi-walled carbon nanotubes (MWNTs) and three kinds of carbon blacks (CBs) with nanosize, and its effects on cytotoxicity were studied. Results indicated that the…
Abstract The study of the electrochemical fluorescence switching properties of the conjugated copolymers containing fluorene, triphenylamine, and 1,3‐diphenylimidazolidin‐2‐one moieties is reported. The polymers show high fluorescence quantum yields, excellent thermal stability, and good solubility in polar organic so…
We have analyzed the decays of the fluorescence of colloidal CdSe quantum dots (QDs) suspensions during dilution and titration by the ligands. A ligand shell made of a combination of trioctylphosphine (TOP), oleylamine (OA), and stearic acid (SA) stabilizes the as-synthesized QDs. The composition of the shell was anal…
Dense metastable phases obtained under “hard” high-pressure conditions may contain instabilities such as unusual oxidation states or coordination environments that may be partially relieved by “soft” low-temperature chemistry. The synthesis of SrCrO2.8 (see picture, left) and SrCrO2.75 (right) phases from the high-pre…
Control of the morphologies of polymer films and layers by addition of nanosize particles is a novel technique for design of nanomaterials and is also at the core of some important biological processes. In order to facilitate the analysis of experimental data and enable predictive engineering of such systems, solid th…
In this study, the Young’s and flexural moduli of single- and double-layer graphene have been theoretically investigated using periodic boundary condition (PBC) density functional theory (DFT) with the PBE, HSE06 H, and M06L functionals in conjunction with the 6-31G* and the 3-21G basis sets. The unit-cell size and sh…
Severely plastically deformed (SPD) materials, for example those produced by high pressure torsion (HPT), are reported to possess outstanding mechanical properties. A typical HPT microstructure consists of elongated grains, usually of grain size well below 1 μm, which are aligned parallel to the shear plane and showin…
Whey, a by-product of diary and cheese industry, constitutes the watery portion after the separation of fat and caseins from whole milk. Cheese whey is a surplus material produced in volumes almost equal to the milk processed in cheese manufactories, therefore its disposal as a waste causes serious pollution problems…
We combine neutron powder diffraction and x-ray single-crystal magnetic diffraction at the Eu $L$${}_{2}$ edge to scrutinize the magnetic motif of the Eu ions in magnetoelectric EuTiO${}_{3}$. Our measurements are consistent with an antiferromagnetic $G$-type pattern with the Eu magnetic moments ordering along the $a,…
We present both theoretical and experimental cases for realizing optically switchable and tunable split-ring resonator (SRR) metamaterials operating in the THz regime. This is achieved by suitably placing photoconducting semiconductors in the various SRR designs. Exciting the semiconductor by an optical pump beam, the…