Materials Literature
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The ever-increasing interest in nanostructured materials and shrinking dimensions of state-of-the-art devices pose new challenges both in synthesis and metrology. Although an extensive range of nanotubular materials of different compositions and for various applications are reported in the literature, often detailed s…
Abstract The trap structure of polyimide was studied using open‐circuit thermally stimulated discharge current (TSDC). TSDC was observed in 25‐μm thin film of polyimide at different condition of polarizing field and temperature. The one‐sided vacuum‐aluminized samples were used to record the open‐circuit thermally sti…
A series of novel photo-crosslinkable fluorinated poly(phthalazinone ether)s containing 1,1-diphenylethylene segments in the polymer main chain, used for optical waveguide materials, were synthesized by polycondensation reaction of decafluorobiphenyl with a mixture of 4-(4-hydroxylphenyl)(2H)-phthalazin-1-one (DHPZ),…
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A novel charring agent poly(1,3-propylene terephthalamide) (PPTA) was synthesized and characterized by Fourier transform infrared spectroscopy and 1H nuclear magnetic resonance. This novel charring agent combined with ammonium polyphosphate (APP) was adopted as an intumescent flame retardant (IFR) to impart flame reta…
An extensive Raman investigation of few‐layer graphene structures, obtained using a plasma microjet technique, is presented. Raman spectroscopy represents a unique method to characterize specific features of these systems. Excitation energies both in the visible and in the deep ultraviolet range are exploited, allowin…
We have studied and compared the magnetic response of LaFeAsO 0.92 F 0.08 , in the form of granular bulk and powder, to the application of ac magnetic fields with different frequencies. The study of the third harmonics of the ac susceptibility has shown that the ac frequency plays an important role in the electromagne…
We present extensive pseudopotential density functional theory calculations dedicated to analyze the stability and dissociation behavior of NO molecules adsorbed on small nonmagnetic Rh(n)± clusters. Following the experimental work of Anderson et al. (J. Phys. Chem. A 2006, 110, 10992), we consider rhodium structures…
The influence of halogen substituents on the catalytic oxidation of 2,4,6-trihalogenated phenols (TrXPs) by iron(III)-porphyrin/KHSO₅ catalytic systems was investigated. Iron(III)-5,10,15,20-tetrakis(p-hydroxyphenyl)porphyrin (FeTHP) and its supported variants were employed, where the supported catalysts were synthesi…
Abstract A modified starch tannage was synthesized by radical copolymerization of degraded starch and resorcinol (RC) using horseradish peroxidase (HRP)/H 2 O 2 as an initiator. The effects of the degradation degree, system pH value, reaction temperature on the copolymerization, and tanning properties of the graft cop…
Abstract Based on much of the importance of RTV on the field of self‐cleaning application for its nontoxic, tasteless, and thermal stability, the effects of D 4 ‐SiO 2 on mechanical properties, Al(OH) 3 and decabromodiphenyl oxide ethyl(DBDPE) on flame retardant property of RTV matrix were investigated firstly. Then,…
Electrical-transport, magnetic and structural properties of the ferrimagnetic semiconductor FeCr${}_{2}$S${}_{4}$ (${T}_{\mathrm{N}}$ $=$ 170 K) have been studied by electrical resistance, $R$($P$, $T$), ${}^{57}$Fe M\"ossbauer spectroscopy (MS), and synchrotron x-ray diffraction to 20 GPa using diamond anvil cells. I…
The self-assembly of Co(O(2)CPh)(2) with a 2,3-dihydroxyquinoxaline (H(2)dhq) linker has revealed a new two-dimensional cluster-based compound, [Co(4)(OMe)(2)(O(2)CPh)(2)(dhq)(2)(MeOH)(2)](n), which shows spin-canted magnetization and a definite magnetic hysteresis loop.
We investigated the structure of two disordered carbons: activated carbon fibers (ACF) and ultramicroporous carbon (UMC). These carbons have highly porous structure with large surface areas and consequently low macroscopic density that should enhance adsorption of hydrogen. We used the atomic pair distribution functio…
Magneto-optical imaging and transport properties of FeSe superconducting tapes prepared by the diffusion method, Ding, Qing-Ping, Mohan, Shyam, Tsuchiya, Yuji, Taen, Toshihiro, Nakajima, Yasuyuki, Tamegai, Tsuyoshi
The processing of 3% Si steel is characterized by the use of MnS particles as a normal grain growth inhibitor. Experiments were carried out to investigate the grain growth in this material during heat treatments at low temperature. Industrial decarburized samples were annealed in the range 825-845 °C and a detailed st…
The authors have constructed a novel experimental setup to investigate the surface reaction mechanisms during thermal and plasma-assisted atomic layer deposition (ALD) of thin films by employing in situ surface and gas-phase diagnostic techniques. Specifically, we have used a real-time attenuated total reflection Four…
Abstract Temperature‐dependent values of dielectric permittivity ε′ and dielectric loss ε″ of polyvinylpyrrolidone (PVP, commercialized as PVP K‐60) solution of average molecular weight 160 000 g mol −1 were measured. The measurements were carried out in the frequency range 10 MHz to 20 GHz using time domain reflectom…
Vertically oriented ZnO hexagonal rod arrays were produced by site-specific hydrothermal growth. These ZnO nanostructures possess well-defined surfaces composed of Zn-terminated (0001) planes (for the top surface) and nonpolar {101̅0} planes (for the rectangular side faces), thereby providing an opportunity to investi…
Abstract In this work poly(hydroxybutyrate/poly(vinyl butyral)‐ co ‐(vinyl alcohol)‐ co (vinyl acetate) (or ethylene propylene diene monomer rubber) blends were prepared by conventional processing techniques (extrusion and injection moulding). A droplet type morphology was obtained for P(3HB)/PVB blends whereas P(3HB)…