Materials Literature
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Superhydrophobicity is directly related to the wettability of the surfaces. Cassie-Baxter state relating to geometrical configuration of solid surfaces is vital to achieving the Superhydrophobicity and to achieve Cassie-Baxter state the following two criteria need to be met: 1) Contact line forces overcome body forces…
The flame retardant properties of the epoxy resin thermosets incorporated with hexa-phenoxyl- cyclophosphazene (HPCP) were investigated via limited oxygen index (LOI) and cone calorimeter. The results show that the LOI value increased, the peak of heat release rate (pk-HRR) and total heat release (THR) decreased, the…
Joint condensation of 4,5-bis(4-hexadecyloxyphenoxy)phthalonitrile ( A ) and tetrachlorophthalonitrile ( B ) in boiling hexan-1-ol in the presence of lithium hexan-1-olate and subsequent reaction with LuCl 3 · 6 H 2 O gave single-decker lutetium complexes with unsymmetrical phthalocyanines ( AABB , ABAB ). Reactions o…
Films of chitosan (Ch), Ch+0.5%(v/v) the citral (CI), Ch+2.5%(w/v) the citral β-cyclodextrin inclusion complex (β-CD-CI) and the physics mixture CI and β-CD-CI were prepared on the quality of fresh beef during refrigerated storage at 4±1°C were investigated, and verified the preservation effect of wrap fresh beef. The…
Al doped ZnO linear resistors were prepared by the high energy ball milling. The effects of content of Al2O3 on the electrical properties of the linear resistors were investigated. Al doped ZnO reduces the non-linear coefficient to some extent at the sintering temperature of 1350°C. When the content of Al2O3 was 3·5 m…
Excellent dispersion of silicon quantum dots (Si QDs) in water is realized by combining the processes of hydrosilylation and self-assembly. As described by X. D. Pi and co-workers on page 751, the size of self-assembled Si QD micelles can be tuned from 10 to 100 nm. This image schematically shows red-light-emitting Si…
The behavior of the effect of microwave plasma micromachining on electronic properties of (100) silicon crystal surfaces at weak adsorption was investigated. Model process mechanisms and factors providing stable modification of the electronic properties of the silicon surface by the formation of built-in surface poten…
Transparent conductive aluminium doped zinc oxide (AZO) thin films were prepared on quartz substrates by spin coating method with different annealing temperatures. The structural, electrical and optical properties of AZO thin films were investigated. The AZO thin films had a hexagonal wurtzite structure and the orient…
Ceria and nickel pattern anodes are prepared and tested in order to gain a fundamental insight into the electrochemical oxidation of hydrogen on either of these surfaces. It is found that ceria is highly active towards electrochemical oxidation of hydrogen with lower polarisation resistance because of the mixed ionic…
THE COMBUSTION synthesis technique using glycine and ……..urea as fuels and nickel nitrate as an oxidizer is able to produce nano crystallite nickel oxide powder. The effects of fuel type, fuel-to- oxidizer ratios (F/O) and temperatures on phase composition and crystallite size of the combustion products were investiga…
With the world's energy, climate and environment problems becoming even serious, it is urgent to find suitable alternative energy sources. Hydrogen has attracted considerable attention because of its abundant reserves, pollution-free, high energy density, which can provide an efficient and stable clean energy source.…
The effect of Eu 3+ ion doping in the La sites of single-crystal La 4/3 Sr 5/3 Mn 2 O 7 was investigated. Electron spin resonance (ESR) was applied to La 4/3 Sr 5/3 Mn 2 O 7 and (La 0.8 Eu 0.2 ) 4/3 Sr 5/3 Mn 2 O 7 single crystals. A phase separation and phase transitions were observed from the ESR spectra data. Betwe…
An S-band left-handed tunable phase shifter based on Barium-Strontium-Titanate (BST) thin film is developed. The application of left-handed transmission line considerably reduces the size of the phase shifter. The phase shift reaches about 124 degree while the permittivity of the BST film ranges from 225 to 450. The F…
Carbon nanotubes (CNTs) are the ultimate reinforcing materials for the development of an entirely new class of composites. However, they have the complicated shapes and do not usually appear as straight reinforcements when introduced in polymer matrices. This decreases nanotube’s effectiveness in enhancing the matrix…
In this paper, a novel metamaterial absorber is proposed. The absorber is based on metamaterial which is a kind of artificial periodic structures. The top layer of the absorber is composed of split ring resonators (SRRs) with a square metal patches (SMPs) in each SRR and its bottom layer is covered with whole metal. T…
Polyimide-based (PI) nanocomposites possess excellent electrical and thermal performance, widely used in inverter motor. In the paper using different particle sizes made polyimide/titania (PI/TiO2) nanocomposite films in situ polymerization, including 20nm A series and 50nm B series. The results shows that A series ha…
With device dimensions reaching their physical limits, there has been a tremendous focus on development of post CMOS technologies. Carbon based transistors, including graphene and carbon nanotubes, are seen as potential candidates to replace traditional CMOS devices. In that, floating gate graphene field effect transi…
This paper mainly investigates the optimum parameters for the fabrication of uniform diamond-like carbon (DLC) films on the electron cyclotron resonance plasma enhanced chemical vapor deposition (ECR-PECVD) reaction chamber by analyzing the effect of the reacting gas velocity on the film properties. This work makes us…
A new closed-form solution of the axisymmetric nonstationary problem of elasticity is constructed for a circular thick piezoceramic plate whose outer cylindrical surface is rigidly fixed. The use of mixed boundary conditions for a curvilinear plane allows one to obtain sufficiently simple computational relations. The…
Dielectric characteristics of polytetrafluoroethylene (PTFE) films modified by direct current discharge at the anode and cathode have been studied as a function of frequency and temperature. It has been found that the dielectric constant increases slightly as a result of plasma treatment and weakly depends on temperat…