Materials Literature
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We investigate theoretically the polarization switching kinetics in ferroelectric thin films. In such substances, the domain walls are pinned by (usually dipole) defects, which are present also in ordered samples as technologically unavoidable impurities. This random interaction with dipole pinning centers results, in…
We present an efficient {\it ab initio} approach for the study of magnetic transport properties based on the Boltzmann equation with the Wannier interpolation scheme. Within the relaxation time approximation, band-resolved electric conductivity under a finite magnetic field is obtained and the historical motion of the…
This paper presents the fabrication and characterization of zinc oxide micro-flowers and their antibacterial activity. The micro-flowers of zinc oxide composed of hexagonal nanorods have been prepared via solution process using precursor zinc acetate di-hydrate and sodium hydroxide in 3 h of refluxing time at ~90°C. T…
Recent processing activities at the Savannah River Site (SRS) involved purifying neptunium solutions using anion exchange (ReillexTM HPQ resin) columns. The addition of cooling coils and the use of antifreeze in a chemical make-up tank led to an evaluation of chemical incompatibility accident scenarios between the ant…
Ba2Ca(BO3)2: Eu2+ green phosphors were prepared by sol-gel process. The crystallization processes of the phosphor precursors were characterized by X-ray diffraction (XRD) and thermogravimetric analysis (TG). The photoluminescence (PL) results showed that this phosphor was efficiently excited by ultraviolet (UV)-visibl…
Small scale explosions, using a detonator, of 7075 aluminium alloy cylinders, 15–100 mm outside diameter, were carried out to investigate the effects of heat treatment on fragmentation. This was the finest for the strongest as received alloy and coarsest for the softest overaged alloy. This effect was similar to that…
The title compound, [Ag(C(27)H(23)BrN(3)O(4))(CH(3)CN)(2)](PF(6))(2), is a mononuclear salt species in which the silver(I) atom is coordinated by one ligand and two acetonitrile mol-ecules and exhibits a distorted T-shaped coordination. The asymmetric unit contains one independent cation and two independent hexa-fluor…
Abstract The purpose of this study was to evaluate the in vitro characteristics of poly(lactic acid‐ co ‐lysine) arginine–glycine–aspartic acid (PLA–PLL–RGD) nanoparticles (NPs) loaded with mitoxantrone. PLA–PLL–RGD NPs with a particle size of 200 nm were prepared with a modified emulsification solvent‐diffusion metho…
We report the large-scale assembly of type-switchable field effect transistors (FETs) based on carbon nanotubes (CNTs) and nanoparticles (NPs). In this device, the charges stored in NPs adjacent to ambipolar CNT channels were adjusted to control the carrier type and density in the channels. We demonstrated the real-ti…
ZrB2, YAG, and Al2O3 are widely applied because of some excellent performance qualities, but ZrB2 is easily oxidized in high-temperature air. To make the ZrB2 ceramics obtain better oxidation resistance, high-density ZrB2–YAG–Al2O3 ceramics were prepared. The oxidation behavior of ZrB2–YAG–Al2O3 ceramics was investiga…
A method is developed for calculating the small-angle x-ray scattering originating from within the interior of a thin film under grazing incidence illumination. This offers the possibility of using x-ray scattering to probe how the structure of polymers is modified by confinement. When the diffuse scattering from a th…
Lead-free 0.95 K0.5Na0.5NbO3-0.05LiSbO3 (KNN-LS) ceramics doped with 0.2 mol% BiMnO3 (BM) have been prepared by the conventional mixed-oxide technique, with sintering temperature at 1095–1120°C. Microstructural and compositional analyses of these doped ceramics have been carried out using X-ray diffraction (XRD) and s…
Two kinds of new aromatic diamine monomer containing thio-amide unit, bis[4-(p-aminothiophenyl)benzoyl]diamine (ATPBA), were synthesized in two steps, which was reacted with 4,4′-(sulphonyl-bis(p-phenylthio)) dibenzoyl chloride (S-DC) to prepare a new polyamide containing high quantity thio-ether unit. The intrinsic v…
Methane (CH 4 ) was injected into the high density ( n e ∼ 10 20 m −3 ), low temperature ( T e ∼ 1 eV) hydrogen plasma in Pilot-PSI to determine the CH A – X photon efficiency in this unexplored plasma regime. The effects of particle transport and particle reflection on the emission of directly excited CH under these…
An gestuften Platinoberflächen wird adsorbiertes OHad weniger bereitwillig gebildet als auf einer ebenen Pt(111)-Oberfläche. Entsprechend verbleiben Oad-Spezies auf Stufen, wenn H2O und Oad dort coadsorbiert werden.
We present a low-temperature scanning tunneling spectroscopy study of the local density of states (LDOS) on the (12110)-surface of the decagonal quasicrystal d–Al–Ni–Co and the (100)-surface of its structurally closely related approximant Y–Al–Ni–Co in the range of ±1 eV around the Fermi energy. The LDOS of both surfa…
Abstract The thermal‐induced gelation process in a polyacrylonitrile (PAN) solution containing different amounts of water was investigated through both dynamic and steady‐state rheologic measurements. During the cooling process, the storage modulus G′ was found to intersect with the loss modulus G″ at a temperature wh…
A mathematical model for limonene epoxidation over PW-Amberlite in a batch reactor was developed and used for reactor simulation and optimization. The mathematical model was validated by comparison of predicted and experimentally determined limonene conversion under isothermal and nonisothermal conditions (23−50 °C) a…
Self-assembled Fe(0.02)Ge(0.98) dilute magnetic quantum dots show a high Curie temperature above 400 K. Such extraordinary magnetic properties can potentially resolve the critical problem of power dissipation in today's integrated circuits and lead to the realization of a new class of spintronics devices.
Abstract Waste rubber cannot be reprocessed by melting because of its three‐dimensionally crosslinked molecular structure. Mechanical size reduction is the most common method for recycling and reusing waste rubber. The modified solid‐state shear extrusion (SSSE) process developed at the Illinois Institute of Technolog…