Materials Literature
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The impact of nanoparticles surface chemistry on the dielectric response of polyvinyl chloride (PVC) and low density polyethylene (LDPE) based nanocomposites is reported here. The nanoparticles used in this study were titania (TiO2) nanoparticles whose surfaces were functionalized with amino silane as coupling agents.…
Abstract The growth of AlN layers on glass substrates using magnetron sputtering method was performed and the grown layers were subjected to optical measurements. Transmission spectra of the layers grown at different content of N 2 in the atmosphere were obtained. The transmission spectra as well as energy gap depende…
The formation of the aromatic ring during the formation of polycyclic aromatic hydrocarbons (PAHs) remains controversial and the experimental evidence is still lacking. Moreover, the formation mechanism of benzene from acetylene in the gas phase has also puzzled organic chemists for decades. Here, ab initio molecular…
This research was conducted to study acoustic characteristic of palm coir fibre, which has high potential to be use for sound absorbing material. The sample was tested with different weight ratio. The weight ratio of palm coir fibre varied from 30 gm to 60 gm with 20 mm thickness. The samples were deformed by using th…
This paper presents a study of the formation of graphene layers by Langmuir-Blodgett (LB) technique. The effect of subphase pH and temperature on the graphene Langmuir isotherms are investigated. Also, the influence of subphase conditions on the surface potential of a monolayer was reported. A variation in the pH of t…
The results of realization of the method for obtaining A3B5 nanoparticles with the help of ball-milling and additional liquid-phase etching of the single-crystal material are presented in the article. The conditions for liquid chemical etching of powders of A3B5-type semiconductors (GaAs), which based on the classical…
Using a mass-loss method, we investigated the solubility change of gallium nitride (GaN) in supercritical ammonia with mixed mineralizers [ammonium chloride (NH 4 Cl) + ammonium bromide (NH 4 Br) and NH 4 Cl + ammonium iodide (NH 4 I)]. The solubilities were measured over the temperature range 450–550 °C, at 100 MPa.…
Chitosan microspheres were synthesized by the method of ionic gelling. The oxolinic acid was encapsulated in chitosan microspheres with different concentrations, which was corroborated by FT-IR of the spheres showing typical bands of chitosan and the antibiotic. The inclusion of antibiotic in the microspheres, was det…
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This research work is aimed to study the relationship between electrical resistance and stiffness of shape memory alloy (SMA) spring actuator. Self-sensing refers to the measurement of resistance of SMA along with the actuation of actuator. It is used to calculate its stiffness directly, instead of using a stiffness s…
Abstract A force field is proposed that reproduces with a high accuracy a large number of properties of the bulk crystal MoS2 phases, monolayers, and nanotubes. The reproduced values are both the experimental results and the results of quantum chemical calculations. The elaborated interaction potential can be useful p…
A new fiber Bragg grating (FBG) sensor based on polyaniline (PAni) has been developed for chloroform detection. PAni was synthesized through chemical oxidation method by using equimolar amount of aniline monomer (Ani), dioctyl sodium sulfosuccinate dopant (AOT) at different three polymerization temperatures (−5, 0 and…
Cut resistant gloves are generally made from different types of high performance composite yarns. To achieve a certain level of cut resistance, material type, material composition and yarn linear density are changed which however make it sometimes difficult to decide the most suitable combination of the materials. In…
A −100 kV, 25 A DC power supply is employed for biasing TH 2089 klystron amplifier of 1 MW, 352.2 MHz RF test setup developed at Raja Ramanna Centre for Advanced Technology (RRCAT), Indore. Input to this power supply is taken directly from 3 phase, 11 kV line through step start unit to minimize inrush current. Issues…
From an electrical engineering point of view insulators plays a crucial role. It is used as a basic element in overhead transmission lines and in distribution. Therefore, it is very much essential for insulator string to relate the potential distribution and electric field distribution of the respective ideal string a…
In the present research porous Mg-Zn scaffolds with different Zn amount and porosities were synthesized by powder metallurgy process as potential degradable materials for orthopedic applications. The microstructures, composition, mechanical properties and in vitro biodegradability of the scaffolds were investigated. O…
Wideband Tin oxide (SnO2) has drawn a great deal of attention due to its excellent properties in a gas sensing material, photovoltaic cells, fuel cells etc. In the present work SnO2sample is synthesized by Sol-gel route. XRD study has been conducted for determination of crystallinity and the structure of SnO2sample. T…
Korozif ortamlarda alan metalik malzemeler, zellikle dk karbonlu paslanmaz elikler farkl korozif ortamlarda gerilim korozyon atla davran bakmndan ciddi sonular dourabilmektedir. Bu alma AISI 304 kalite paslanmaz elik zerinde bir U-bkm ile gerilim yaratlarak farkl seyreltilerdeki asidik ortamlarda meydana gelen gerilim…
One of the serious problems with modern electrical loads is harmonics, which is generated from nonlinear loads. Harmonics can lead to excessive heat and noise in the loads and create a large amount of energy losses either in transmission systems or distribution systems. Compensation of these harmonics substantially im…
Kinetics and mechanism of esterification of dichloromaleic anhydride with C 1 –C 4 alcohols in the presence of zeolitic catalysts have been studied. The stage-by-stage Langmuir–Hinshelwood mechanism of heterogeneous catalysis at acidic active surface sites of zeolites has been suggested. The kinetic model has been ela…