Materials Literature
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A variety of hypotheses have been put forward as to the nature of secondary alteration. They were tested by using the amount of insoluble SiO 2 accumulated in the rocks (Q) as the index of secondary alteration degree. This parameter allows any sample to be characterized with the degree of its secondary alteration. By…
In this paper, piezoelectric ceramics with the composition of (Na0.525K0.4425Li0.0375)(Nb0.8975Sb0.065Ta0.0375)O3 + 0.3 wt% CoO + x CuO (0.005≤x≤0.025) (abbreviated to NKL-NST) were fabricated for ultrasonic sensor application. The effects of CuO addition and sintering on the microstructure and the piezoelectric prope…
Introduction: Lithium ion batteries (LIB) are considered to be a promising solution for various energy storage applications owing to their high energy density. These batteries have grown in popularity in recent years and are often found integrated into portable electronic devices and electric vehicles. In order to sup…
Non noble metal "earth abundant" electrocatalysts will significantly reduce the costs and make it possible to use electrochemical water splitting (electrolysis) on a very large scale. Non noble metal catalysts can be an effective replacement even if their electrochemical activities are a fraction of their noble metal…
Chemical degradation and capacity fading is one of challenge in LIBs due to the loss of active cathode material from interaction at the interface of the cathode and electrolyte.1 The use of coatings based on a non-active oxide, e.g. Al2O3, is a prevailing strategy to decrease such degradation based on their role as el…
Maintaining single-walled carbon nanotubes in their pristine state (i.e. devoid of aggregation and inhomogeneous doping) within nanostructured photovoltaic devices is a major challenge. In this contribution, we report on the synthesis and self-assembly of a C60-functionalized flavin (FC60), composed of PCBM and isoall…
The development of high-dielectric constant thin film materials is essential for future active and passive nanoelectronics devices. Recently we have developed high-dielectric constant thin film materials for thin film capacitor and gate dielectrics. In the case of the high-dielectric constant thin film material for th…
A layered Cu–Cr–S structure doped with Ga ions and consisting of single-crystal CuCrS2 layers, embedded with thin plates of spinel phases CuCr2S4 and CuGa x Cr2–x S4, has been studied using the magnetic resonance and magnetic susceptibility methods. The Curie temperature and the saturation magnetization of the spinel…
The dye-sensitized solar cells (DSCs) based on an organic sensitizer with trade name RK1 were fabricated by new fabrication procedure. The fabrication procedure that performed in inert gas atmosphere using a glove box includes: (i) assembling sandwich cells from preparative FTO/TiO2 and FTO/Pt electrodes; (ii) filling…
Dye-sensitized solar cells (DSCs) stand actually as a promising alternative to conventional silicon photovoltaic devices owing to lower production cost, low environmental footprint and unique properties to convert efficiently low light intensities and diffuse day light.( 1 ) Today more than 14 % power conversion effic…
Synthesis of single wall carbon nanotubes (SWCNTs) with specific helicity, and thereby with particular properties, still remains one of the main challenges for scientific and engineering communities. Accumulated experimental results for the last two decades on preferential or helicity specific growth of nanotubes cont…
The detection of hydrogen peroxide (H2O2) plays a key role in various applications including food and environmental analysis, industrial manufacturing, pharmaceuticals, and biochemistry. Besides, the level of H2O2 in aerobic cells is used to diagnose some pathological conditions ranging from diabetes and Alzeimer’s di…
We investigate the electronic energy levels of a circular graphene quantum dot with a hydrogenic impurity placed at the center of the dot. We have adopted a variational scheme in such a way that the trial wave functions take into account the carrier confinement due to the dot geometry as well as the effect of the magn…
This article contains the results of development of and research on the properties of gallium-based metallic glue designed for securing powerful electrical and radio components. We have proven that metallic glue is suitable for installing—in particular, monolithic integrated circuits at the contact pressure of gluing—…
The success of next-generation chemical monitoring and molecular identification technologies hinges on the ability to resolve between different chemical environments. Fully-integrated evanescent Raman spectrometers can provide this solution; however, current materials used in excitation and collection optics are limit…
Metal complexes of corrole continue to attract the interest of different research groups, since the coordination chemistry of such a macrocycle presents peculiar and intriguing characteristics, such as for example its non-innocent character as a ligand. The Periodic Table of Metallocorrolates has been widely expanded…
TiO2 particles have been added in molten aluminium to result in aluminium based cast Al/Al3Ti-Al2O3 composite, which has been added then to molten magnesium to synthesize magnesium based cast Mg-Al/Al3Ti-Al2O3 composite. The nominal compositions in terms of Mg, Al, and TiO2 contents in the magnesium based composites a…
Supercapacitors, a class of electrochemical energy storage devices with superior power densities and long cycling lifetimes, have attracted great attention for the last decade due to their widespread application in backup power supply systems, portable devices, power tools, and hybrid electric vehicles. Graphene is co…
The successful development of novel materials for polymer electrolyte membrane fuel cell (PEMFC) electrodes is hindered by the lack of a fundamental understanding of the complex, multicomponent nature of the catalyst layer (CL), the interplay of its components, and their independent and cooperative effects on the effe…
Electrochemical Promotion of Catalysis (EPOC), also called Non-Faradaic Electrochemical Modification of Catalytic Activity (NEMCA), is a promising concept for boosting catalytic processes and advancing the frontiers of catalysis [1]. This innovative field aims to modify in-operando both the activity and the selectivit…