Materials Literature
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Cable distribution networks are inherently complex and inaccessible systems; many of them are coming to the end of their original design life. As assets, they represent a dynamic and challenging issue with regard to the tasks of maintenance and management. Partial discharge (PD) has long been recognized as both a caus…
Abstract The structural modifications with temperature of libethenite, Cu 2 (PO 4 )(OH), were determined by single-crystal X-ray diffraction up to dehydration and consequent decomposition of the crystal under investigation. In the temperature range 25–475°C, libethenite shows positive and linear expansion. The axial t…
The carbon nanotube (CNT) is a model system of one-dimensional nanomaterials, which shows numerous unique properties and vast potential applications. The synthesis and assembly of high-quality CNTs are the basis for studies of their properties and applications. In this contribution, we briefly review our works on the…
NaYF 4 : Er 3+ , Yb 3+ crystals were prepared by simple synthetic method. Under 980 nm laser excitation, 408 nm, 539 nm and 655 nm upconversion emissions were recorded. Laser power and signal intensities of the upconverted emissions were obtained to understand the upconversion mechanisms.
Electron spin resonance (ESR) results are presented on the influence of in situ ultrasound treatment (UST) during implantation at 300 K of Si+ ions into thermal SiO2 on (100)Si before and after subsequent high-temperature (T) annealing (1100 °C) intended to promote the formation of embedded Si nanoparticles. The as-im…
The change in polarization characteristics of visible light reflected from amorphous ZnO and Ca doped ZnO thin films were studied. Highly transparent thin films of ZnO and Ca doped ZnO were deposited on glass substrate by sol–gel spin coating technique. Reflection studies revealed that the change in the polarization s…
We have fabricated nonvolatile memory based on top-gated carbon nanotube field-effect transistors (CNTFETs). Two kinds of insulating films, SiN x and SiO 2 , were deposited to control the hysteresis characteristics after the removal of water molecules around the single-walled CNT channels. The interface between the Si…
The T-x phase diagram of the Ag-Sn-S-Br system has been studied in the composition region Ag8SnS6-Ag2SnS3-AgBr, and a compound of composition Ag6SnS4Br2 has been identified. Ag6SnS4Br2 has a new structure, closely related to that of Ag6GeS4Br2: sp. gr. Pnma, a = 6.67050(10), b = 7.82095(9), c = 23.1404(3) Å, Z = 4, R…
The Nanorobotics and cargo transportation application of molecular motors is of recent intent. The present study explores the transportation of Mesalamine/5-aminosalicylic acid/5-ASA drug by molecular motors. Mesalamine is an anti-inflammatory drug used to treat Crohn's disease and ulcerative colitis. Conjugate of mes…
Sports equipment exposed to impact loading often involves polymeric materials. The impact response tends to be time dependent with large stress-strain hysteresis. Replicating impact loading in a controlled laboratory environment for material characterization is challenging, but necessary if models are to accurately de…
The emission of negative and positive ions at rupture of polymers has been recorded under high vacuum. The time characteristics of the emission have been investigated with a time resolution up to 1 μs by varying the sizes and the tension rate of poly(ethylene terephthalate), poly(caprolactam), poly(vinylidene fluoride…
The related mathematical models of the thermal processes, thermoelastic stress-strain state, temperature, and technological errors of a wave solid-state sensor of inertial information are constructed and investigated. On the basis of the constructed finite-element models, the thermoelastic stress-strain state of the s…
The interaction between negatively charged CdTe quantum dots (QDs) and tetrasulfophthalocy-anine (TSPC) molecules in weak-acid and alkaline media has been investigated by spectral-luminescence methods. Similarly charged QDs and TSPC molecules are found to form complexes that exhibit energy transfer from QDs to TSPC ac…
Golf has the potential to keep people active well into their later years. Injuries to the target side knee have been reported in golfers, yet no mechanisms for these injuries have been proposed. The loads on the knee during the golf swing may be insufficient to cause acute injury, yet they may be a factor in the progr…
A robust self-interleaving mechanism for parallel hysteresis current controlled inverters is proposed, with sustained switching under all load conditions. A fast interleaving technique that can be applied for normal load conditions is combined with a self-interleaving mechanism, which ensures correct switching during…
The glass formation region in the SrO-B 2 O 3 -SiO 2 system has been refined. The order of formation of crystalline phases in the system has been investigated at SrO contents of 50–75 mol %. It has been demonstrated that, at low temperatures, the 2SrO · SiO 2 and 3SrO · B 2 O 3 phases crystallize first irrespective of…
Accurate and reliable detection of hypergolic fuels such as hydrazine (N2H4) and its derivatives is vital to missile defense, aviation, homeland security, and the chemical industry. More importantly these sensors need to be capable of operation at low temperatures (below room temperature) as most of the widely used ch…
The impact of humidity and temperature on a zinc oxide based transparent conducting oxide (TCO) was assessed under accelerated aging conditions. An in situ electroanalytical method was used to monitor the electrical properties for a conducting zinc oxide under controlled atmospheric (humidity, temperature and irradiat…
A statistical design of experiments was used to study the effect of reaction temperature and time on the synthesis of cobalt ferrite nanoparticles by the thermodecomposition method. A 24–2 factorial experimental design with two central points was used in which the control variables were the time and temperature of the…
We perform molecular dynamics simulations of a model glass-forming liquid to measure the size of kinetic heterogeneities, using a dynamic susceptibility χ ss ( a , t ) that quantifies the number of particles whose dynamics are correlated on the length scale a and time scale t . By measuring χ ss ( a , t ) as a functio…