Materials Literature
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According to the rules accepted by the Commission on New Minerals, Nomenclature and Classification, International Mineralogical Association, the definition of a new mineral species within the eudialyte group should be based on the general crystal chemical principle of the predominance of a new element at one or severa…
Abstract This review reports recent advances in the field of thermal conductivity of polymeric nanocomposites. Thermally conductive polymeric nanocomposites can be used for replacing metal parts in several applications, such as liquid cooling and ventilation garment, power electronics, electric motors and generators,…
In this research work, the Metal-Insulator-Metal (MIM) capacitor structure is designed and fabricated with barium strontium titanate (BST) oxide material as the capacitor dielectric material and silver as both top and bottom electrodes for dynamic random access memory (DRAM) cell. This designed capacitor consists of a…
The photoluminescence emission of nanoporous anodic aluminum oxide films formed in phosphoric acid is studied in order to explore their defect-based subband electronic structure. Different excitation wavelengths are used to identify most of the details of the subband states. The films are produced under different anod…
Carbon nanotubes have been successfully synthesized using the catalytic chemical vapor deposition (CCVD) technique over typical refining hydrotreating catalysts (hydrodesulfurization and hydrodenitrogenation) containing Ni–Mo and Co–Mo supported on Al2O3 catalysts at 700°C in a fixed bed horizontal reactor using natur…
In the present study, we report the systematic investigation of the effect of chemical oxidation on the structure of multi-walled carbon nanotubes (MWCNTs) and multi-walled carbon nanotubes buckypaper. The chemical oxidation of multi-walled carbon nanotubes was performed via using three types of chemical solutions: ni…
As a popular application of electrochemical anodic dissolution, electropolishing is extensively adopted in the surface finishing industries of metals. Anodic dissolution is a complex reaction with many process parameters and chemical properties involved. A simple explanation of the mechanism of morphology formation du…
Abstract Luminescence intermittency, also termed ‘blinking’, refers to spontaneous changes in the brightness of a luminescent fluorophore under continuous optical excitation. Blinking was first observed in colloidal semiconductor nanocrystals over fifteen years ago, shortly after synthetic protocols became advanced en…
Abstract. This work studied the feasibility of dissimilar welding between AISI 304 stainless steel and AISI 1020 carbon steel plates with the thickness of 15 mm. The processes applied in this work were gas tungsten arc welding (GTAW) and shield metal arc welding (SMAW). Microstructure of weld metal produced by GTAW co…
We report the formation and characterization of graphene dispersions in two organosilanes, 3-glycidoxypropyl trimethoxysilane (GPTMS) and phenyl triethoxysilane (PhTES) as new reactive solvents. The preparation method was mild and easy and does not produce any chemical modification. The dispersions, which exhibit the…
This paper reports the decoration of single wall carbon nanotubes (SWCNTs) with platinum (Pt) nanoparticles using an electrochemical technique, rotating disk slurry electrode (RoDSE). Pt/SWCNTs were electrochemically characterized by cyclic voltammetry technique (CV) and physically characterized through the use of tra…
Currently, the mechanism of biological nanoparticles synthesis is not fully understood. We proposed an ecofriendly method for gold nanoparticles (AuNPs) synthesis using plant extractsand electrochemical characterization. The reduction of the metal ions through leaf extract leading to the formation of AuNPs of fairly w…
Polyaniline (PANi) and poly(N-methylaniline) (PNMA) films have been successfully synthesized on pencil graphite electrode (PGE) using cyclic voltammetry (CV) from acetonitrile (ACN) solution of 0.1 M tetraethylammonium tetrafluoroborate (TEABF4) and 0.1 M monomer. These polymers have been characterized by scanning ele…
Red emitters that can be excited with blue InGaN LEDs are essential for warm white LEDs for solid-state lighting (SSL). Current red phosphors do not satisfy all of the criteria for SSL. Red-emitting CdTe-based quantum dot (QD) heterostructures meet several of these criteria, such as narrowband emission, broad blue abs…
Abstract Doping semiconductor nanocrystals with transition metal ions introduces new optical, electronic, and magnetic properties to the host semiconductor nanocrystals. The energy transfer and charge transfer between exciton and dopant ions are the key photophysical processes responsible for the unique properties of…
Prevention of icing flashover on transmission lines has become an important problem. A new method for mitigating effects of glaze ice on energized insulators has been developed. Semiconductive silicone rubber was painted on the bottom of suspension disc insulators, while the upper ceramic surface was untreated. An ele…
Sm3+ doped YPO4 spherical nanoparticles are prepared by wet chemical route. Pure YPO4 shows the tetragonal phase, which is stable up to 900 °C, whereas pure SmPO4 shows the phase transition from hexagonal to monoclinic when heated above 800 °C. The (2-10 at.%) Sm3+ doped YPO4 shows the mixture of phases of tetragonal…
Noise reduction is one of the important tasks of cable insulation assessment based on partial discharge. This paper has developed a novel attitude in noise reduction, i.e. feature-oriented de-noising. Implementing this idea, a new de-noising filter based on Mathematical Morphology Filters (MMF) is presented where the…
Leakage current (LC) monitoring is a widely employed tool for the investigation of surface electrical activity and the performance of high voltage insulators. Surface activity is correlated to the shape of LC waveforms. Although field monitoring is necessary in order to acquire an exact view of activity and insulators…
OBJECTIVE: We describe the development, evaluation, and comparison of colloidal gold-loaded, poly(d,l-lactic-co-glycolic acid)-based nanoparticles containing anti-acquired immunodeficiency syndrome drug stavudine and uptake of these nanoparticles by macrophages in vitro. METHODS: WE USED THE FOLLOWING METHODS IN THIS…