Materials Literature
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Influence of structure on the thermal properties of a large group of natural and synthetic porphyrins (H2P) and metalloporphyrins (MP) was analyzed on the ground of thermogravimetric studies. The initial stage of thermal degradation of “classical” porphyrin containing a flat or pseudo-planar macrocycle is a result of…
An investigation of the crystal structure, the magnetic and the piezoelectric properties of polycrystalline Bi1-xCaxFe1-x/2Nbx/2O3 (I) and Bi1-xPbxFe1-x/2Nbx/2O3 (II) systems was performed by x-ray diffraction, Mössbauer spectroscopy, vibrating sample magnetometry, and piezoresponse force microscopy. It is shown that…
The primary goal of this article is to study the structural characterization of natural fiber reinforced structural insulated panels (NSIPs) using jute/polypropylene laminates as skin. To this end, flexure and LVI tests were carried out on NSIPs in order to check the response of NSIPs under sudden impact loading and u…
A combined system using nano MgO and nanofiltration (NF) membrane was established to purify polluted water in this experiment. The turbidity, permanganate index, UVA254, colony counts and the concentrations of NO3-, NO2-, NH4+, Fe, Mn and Mg of the effluents from each unit of this combined system were measured to inve…
Graphene exhibits extraordinary electrical properties and is therefore often envisioned to be the candidate material for post-silicon era as Silicon technology approaches fundamental scaling limits. Various Graphene based electronic devices and interconnects have been proposed in the past. In this paper, we explore th…
10.2217/nnm.11.66
Evolution of the structure of pure copper (99.8 %) in the course of severe plastic deformation performed by the new method of dynamic channel-angular pressing (DCAP) and the mechanical properties of the arising mixed SMC+NC structures have been studied. The rate of deformation of the material during DCAP is ∼10 5 s −1…
An efficient algorithm for the optimal control of a batch crystallization process with size-dependent growth kinetics is proposed. By means of a unique diffeomorphism, new independent coordinates for the time and size variables of the underlying population balance equation are introduced, leading to a closed infinite…
Over the last 10 years supercapacitors have grown from infancy with sales of $US40M in 2002 to a strongly emerging technology with sales of US$450M last year. This represents an annual growth rate of 35%. Forecasts for the next 5 years show growth continuing at 25% 30% with sales of $1.5B in 2015. Supercapacitors are…
This paper reports on a wafer-level thin film vacuum packaging technology for MEMS. It is based on the fabrication of freestanding porous anodic alumina membranes of a typical thickness of 2 to 3μm, featuring cylindrical nanopores that are a mere 15-20nm in diameter (aspect ratio >;100). The fabrication process involv…
To understand what is going on during graphene growth by gas-source molecular beam epitaxy with cracked ethanol and to gain insights into how to optimize this growth method to produce high-quality graphene, we investigated the influence of gas flow rate on the growth rate. From the core-level photoelectron intensities…
This paper reports a significant increase in tensile ductility in solution-treated Mg-Nd-Zr cast alloy by trace addition of 0.2wt.% Zn. The improvement is accompanied by the occurrence of wavy slip lines on the surface of fractured tensile specimens, which are caused by the activation of non-basal slips including <…
Nupela potapovae sp. nov., a distinctive new species from ponds and small lakes in the Rocky Mountains of western North America, is described and compared with similar species. In the central area under light microscopy, the new species displays four refractive spots that correspond to shallow internal depressions adj…
Abstract In this work reactions between [AuCl(PPh 3 )] and HC≡CAr (Ar = phenyl, pyridinyl, biphenyl or p ‐acetylphenyl) in the presence of the nitrogen base and organic electron donor1,2,4,5‐tetrakis( N , N′ ‐dimethyl‐ N , N′ ‐ethyleneguanidino)benzene ( 1 ) were studied. Two different product types were isolated and…
We study the dimensional crossover from two dimensional to one dimensional (1D) in the structure of the graphene honeycomb lattice when one of the dimensions of the layer is reduced by analyzing the thermally excited rippling. Through a joint study, by Monte Carlo (MC) simulations using a quasiharmonic potential and b…
Doxorubicin has been widely used in cancer treatment, but its severe side-effects restrict its clinical application greatly. So, we hope to design a novel delivery system to decrease its side-effects. In this paper, we prepared core cross-linked micelle based on poly(epsilon-caprolactone)-poly(ethylene glycol)-poly(ep…
We successfully fabricated core/shell-type composite QDs based on the ternary-CuInSe2. For the CuInSe2/ZnSe core/shell QDs, an enhanced photoluminescence (PL) emission intensity, such as 16% of the photoluminescence quantum yield (PLQY), and a blue-shift in the emission after the ZnSe coating, were observed. The incre…
For higher electrical insulation performance of vacuum circuit breakers (VCB), the surface insulation characteristics in vacuum should be improved. In this paper, we investigated the development mechanism of impulse surface flashover on alumina ceramic insulator in vacuum. We measured the still images and ultra fast f…
A new palladium(II) organometallic complex with liquid crystal properties was prepared and its electrical conduction was investigated in all specific mesophases. It was established that the electrical conduction is of ionic type. The negative differential electrical resistivity was evidenced. The effect is explained b…
In this paper, we present the fabrication and test of a carbon-nanotube (CNT)-based field emission ion source for a micro time-of-flight mass spectrometer (µ-TOF MS). The µ-TOF MS is composed of two parts, i.e., a field emission ion source and a mass analyzer. Molecules are ionized by the impact of electrons emitted f…