Materials Literature
按标题、摘要、年份、主题和来源检索公开元数据。结果保留作者、摘要、分类与原始来源链接。
Summary We report a sensitive, selective, and fast responding room temperature chemiresistive sensor for hydrogen sulfide detection and quantification using poly(N‐propylaniline) (PNPA). This sensor shows an excellent wide range of detection with very good selectivity and reproducibility. Organic acid and HCl doped po…
Film samples of nominal Mg(Fe 0.8 Ga 0.2 ) 2 O 4-δ composition were obtained on Si(100) substrates by oxygen-ion-beam sputtering of a Mg(Fe 0.8 Ga 0.2 ) 2 O 4-δ ceramic target. The film thicknesses were ∼200 and ∼400 nm. Field dependences of the specific magnetization of ∼200-nm films annealed at different temperature…
Silicyne, a silicon allotrope, which is closely related to silicene and has graphyne-like structure, is theoretically investigated in this work. Its optimized geometry and electronic band structure are calculated by means of the first-principles frozen-core projector-augmented wave method implemented in the Vienna ab…
The exceptional electro-mechanical and optoelectronic properties of graphene have recently been exploited to devise a novel switching device that allows steering carriers from input to output; this device, called Reconfigurable Gate (RG) naturally behaves as multiplexer yet with better performance, area and power comp…
The manganese-doped crystals of bismuth titanates, germanates and sillenites are discussed in terms of the Urbach tailing and Faraday effect along with doping agent intrinsic lattice patterns.
A method for the synthesis of fluorinated allyl-containing bisphenol based on 4,4′-[(2,3,5,6-tetrafluoro-1,4-phenylene)bis(oxy)]diphenol has been elaborated. Curable aromatic polyethers have been prepared via polycondensation of the synthesized bisphenol with decafluorobiphenyl. The influence of bases, namely K 2 CO 3…
Results of a pioneering study of the effect of laser radiation in vacuum on the surface of a polyketone (alternating terpolymer of ethylene, propylene, and carbon monoxide, POK ) plate are presented. It has been found that laser beam irradiation leads to the surface heating of the plate, its melting, and the formation…
Nanotubes of magnesium hydrosilicate Mg 3 Si 2 O 5 (OH, F) 4 having the structure of chrysotile and increased thermostability in comparison with hydroxyl-chrysotile were synthesized under hydrothermal conditions at temperatures of 300–450°C and pressure of 30–100 MPa from mixtures of oxides of magnesium and silicon wi…
The oxygen content during the intermediate and final stages of sintering can have a strong effect on the microstructural evolution of oxide fuels. Two depleted urania (d-UO2.0 and d-UO2.14) samples, sintered up to a theoretical density of 90%, were serial sectioned using a focused ion beam and characterized with elect…
In this study, an attempt was made to enhance the foamability and physical properties of ethylene-propylene diene (EPDM) rubber/ground tyre rubber (GTR) composite foams, thereby providing a potential new route to recycle discarded tyres. Pan-mill type mechanochemical reactor made in our lab was applied to realise the…
The synthesis and characterization of the first rigid fused porphyrin-phthalocyanine hetero-dyad with two different metals is reported; was based on porphyrin’s dienophile features in Diels–Alder reactions. This synthetic procedure represents a new approach for the synthesis of extended systems based on tetrapyrrolic…
AnchorThe surface of polyaniline nanofibres is modified by silver nano particles using cyclic voltametry (CV). The surface modifications induced by silver particles are confirmed by scanning electron microscopy (SEM), Energy dispersive X-ray analysis (EDX) and Raman spectroscopic techniques. The SEM micrographs show u…
Summary Polythiophene (PT) is an important conjugated polymer that finds applications in electronic and molecular electronic devices. Considering its application area, its electrical conductivity is of major concern. In the present work electrical conductivity (σ) measurements of chemically synthesized and FeCl 3 dope…
We study the Josephson effect in s±Is± junctions made by two-bands reversed-sign s-wave (s±) superconductive materials. We derive a spectral equation providing the bound Andreev energy states at the interface. The energy spectrum depends on a parameter accounting for the weight of the second band with respect to the f…
The rupture of thin smectic bubbles is studied by means of high speed video imaging. Bubbles of centimeter diameter and film thicknesses in the nanometer range are pierced, and the instabilities of the moving rim around the opening hole are described. Scaling laws describe the relation between film thickness and featu…
A metallic Mn layer was successfully formed on tetraethylorthosilicate (TEOS)–SiO 2 substrate at the deposition temperature of 250 °C by chemical vapor deposition (CVD) using a newly developed Mn precursor, bis[1-( tert -butylamide)-2-dimethylaminoethane- N , N ']manganese. A thin and uniform Mn oxide layer was simult…
Abstract With the transfer-matrix method, conditions of extraordinary electromagnetic resonant tunneling through all combinations of three-layer nonmagnetic (µr = 1) media containing epsilon-negative (ENG) and doublepositive (DPS) slabs were explored. We show that abnormal phenomena can occur in the ENG-DPS-ENG struct…
The temperature dependence of the heat capacity of nanostructured BaTiO 3 ceramics produced by the solid-phase method has been studied; before sintering, the synthesized charge is subjected to a severe action in Bridgman anvils in combination with shear deformation. It has been found that the ferroelectric transition…
Transparent p–n junctions composed of zinc oxide and magnesium-doped copper–chromium oxide thin films were prepared using radio-frequency (RF) magnetron sputtering deposition on indium–tin oxide glass substrates. The temperature of the substrate during deposition was varied to examine differences in the diode characte…
onic conductivity and dielectric properties of starch based polymer electrolytes doped with silver nitrate (AgNO3) at elevated temperatures were studied. The solid polymer electrolytes were prepared using the solution cast method. X-ray diffraction (XRD) analysis implied that the incorporation of 6 wt.% AgNO3 increase…