Materials Literature
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The location of a partial discharge (PD) source inside a transformer can be determined from the time differences of arrival (TDOA) between signals that are captured by an array of UHF sensors. The TDOA can be acquired from the received PD waveforms. In this paper, three different methods of acquiring the TDOA from the…
The nanoscale semiconductor β‐mercuric sulphide (HgS) has promising applications in electronic and optical fields. Continued development of synthesis methods is needed to expand approaches that produce uniform particles, while avoiding reagents of high toxicity and ecological impact. A solvent‐based approach was devel…
The ability of prokaryotic microorganisms to reduce the inorganic metals has opened up an exciting eco‐friendly approach towards the development of natural ‘nano‐factories’. However, a number of issues have to be addressed from the nanotechnological and microbiological point of view before such a biosynthesis approach…
ZnFe2O4 nanocomposites have been prepared by a simple co‐precipitation method. The prepared samples were characterized by Scanning Electron Microscopy (SEM), Powder X‐ray Diffraction (XRD), Energy Disperse X‐ray Analysis (EDX), Transmission electron microscopy (TEM) and UV‐visible absorption spectral techniques. Condu…
Photovoltaic performance is shown to depend on ligand capping on PbS nanoparticle solar cells by varying the temperature between 140K and 350K. The thermal response of open‐circuit voltage, short‐circuit current density, fill‐factor and shunt resistance varies between the ligands. A large increase in short‐circuit cur…
In this chapter, we will focus on a specific X‐raybased technique among those employed in surface science and which is especially suitable for the study of self‐assembled nanocrystals: Grazing Incidence Small Angle X‐ray Scattering (GISAXS). We will first introduce the main field of investigation considered herein, wi…
Abstract The objective of the present study was to investigate changes in the structural, textural, and surface properties of tubular halloysite under heating, which are significant in the applications of halloysite as functional materials but have received scant attention in comparison with kaolinite. Samples of a pu…
The implementation of the van der Pauw (VDP) technique for combined high temperature measurement of the electrical resistivity and Hall coefficient is described. The VDP method is convenient for use since it accepts sample geometries compatible with other measurements. The technique is simple to use and can be used wi…
Electrospinning is a process that produces continuous polymer fibers with diameters of a nanometric scale. Nylon 6 in formic acid was electrospun to obtain the nanofibers. Fibers with different diameters were obtained using flow rates of 0.1, 0.5, 1 and 1.5 mL/hr, 20 wt% solution concentration, with an applied voltage…
Conducting polymers have elicited much interest among researchers because of their reasonably good conductivity, stability, ease of preparation, affordability and redox properties compared to other organic compounds. In particular, the electronic and electrochemical properties of conducting polymers have made them fin…
OBJECTIVE: To synthesize the ecofriendly nanoparticles, which is viewed as an alternative to the chemical method which initiated the use of microbes like bacteria and fungi in their synthesis. METHODS: The current study uses the endophytic bacterium Bacillus cereus isolated from the Garcinia xanthochymus to synthesize…
The field of thermoelectrics has long been recognized as a potentially transformative power generation technology and the field is now growing steadily due to their ability to convert heat directly into electricity and to develop cost-effective, pollution-free forms of energy conversion. Of various types of thermoelec…
Zinc oxide nanoparticles are known to be one of the multifunctional inorganic nanoparticles with effective antibacterial activity. This study aims to determine the antimicrobial efficacy of green and chemical synthesized ZnO nanoparticle against various bacterial and fungal pathogens. Various microbiological tests wer…
Graphene is at the center of an ever growing research effort due to its unique properties, interesting for both fundamental science and applications. A key requirement for applications is the development of industrial-scale, reliable, inexpensive production processes. Here we review the state of the art of graphene pr…
BACKGROUND: Nanomaterials have unique properties compared to their bulk counterparts. For this reason, nanotechnology has attracted a great deal of attention from the scientific community. Metal oxide nanomaterials like ZnO and CuO have been used industrially for several purposes, including cosmetics, paints, plastics…
A resonant two-step quantum cutting process in a wavelength downconverter of Nd 3+ –Yb 3+ -codoped fluoroindogallate glasses is investigated by establishing and solving the simulated theoretical model of rate equations and power density propagation equations. Based on the optimized Nd 3+ and Yb 3+ concentration and th…
A report on strong and fast blue photoluminescence (PL) from silicon nanocrystals (Si-ncs) suspended in toluene solution is presented. They were fabricated through nanosecond pulsed laser ablation of the silicon target in toluene. Transmission electron microscopy observations confirm that the Si-ncs are well dispersed…
Abstract The synthesis of azulene-substituted polymethine dyes 3–6 was established by the Zincke-type ring-opening reaction of pyridinium salt 2 with several secondary amines, followed by the alumina-catalyzed Knoevenagel condensation reaction with malononitrile. The intramolecular charge-transfer interactions from bo…
A dispersion law analysis and the critical value of applied electric field intensity/field strength formulations are employed to investigate the self-organised behaviour of multiple jets in near-field electrospinning (NFES) experiments. In particular, the theoretical ‘fastest forming instability’ in mesocopic scale wa…
In order to fabricate a thin-walled high-temperature titanium alloy component, the mold filling capacity of 600°C high-temperature titanium alloy was investigated by a mesh pattern. The results indicate that 600°C high-temperature titanium alloys present poorer mold filling capacity than Ti6Al4V alloy. The effect of d…