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Biomimetics is an engineering activity which aims to convert principles of biological function into human technology. A bio-device using information transfer-conversion system of the creature is a biosensor. Organic materials are quite fascinating due to availability of many metastable states which is considered to play a pivotal role for the next-generation electronics. Especially, “Organic lontronics”...
This work introduces a super-hydrophobic hybrid thin film which shows the capability of thermal management. The hybrid thin film was obtained by sputtering a fluorocarbon layer on a glass substrate that has been pre-deposited by a layer of soot. Multiple characterization methods, e.g. Energy Dispersive Spectrometer (EDS), Static Contact Angle Measurement and Field Emission Scanning Electron Microscopy...
In organic light-emitting diodes, the carrier recombination of electron-hole can occur efficiently using function-separated multilayer structures because of smooth carrier injection and transport. Therefore, hole-or electron-injection layers are widely used to enhance carrier injection from electrodes. In this study, we compared copper-phthalocyanine (CuPc), PEDOT:PSS, and fluorinated self-assembled...
In diagnostics analysis, creatinine is a biomarker for the evaluation of renal and muscular dystrophy in various biology and closely related to the life activities of the organism. In this research, we investigated the transmission surface plasmon resonance-imaging (TSPR-i) with a 3-channel microfluidic cell. TSPR-i based on the exploitation of propagating SPR is the technique for monitoring the changes...
Detailed understanding of charge transport phenomena in dielectrics is important in order to understand the influence of chemical composition on the dielectric properties. Material simulation methods such as density functional theory (DFT) and molecular dynamics (MD) can be used to calculate basic properties of the material. Here we focus on mobility of ions at high fields by applying MD simulations...
Polyethylene (PE) is a hydrophobic polymeric insulating material. It has been found that adding hydrophilic additives can enhance the water tree resistance of PE. On the other hand, a surfactant contains both hydrophobic and hydrophilic groups in its molecular structure. It is considered that a surfactant added to PE surrounds water molecules and stabilizes them. Hence, it is highly plausible that...
The electrical degradation and breakdown in polymeric insulators are correlated with the conduction of charge carriers in the material. However carrier transfer in polymeric insulators remains poorly understood. In order to investigate the relation between the morphology and the carrier mobility of polymeric insulators, hole mobilities in crystalline and amorphous PE was evaluated with multi-scale...
This paper aims at carrying out a parameters sensitivity analysis on a charge transport model using an approach based on the Sobol's method when data at different temperatures, different applied electric fields and different charging times are available. The Sobol's approach applied herein is used to study how the variation of the current density and charges density can be quantitatively apportioned...
The electrostatic adsorption method can be used to produce composite materials with an arbitrary structure, and their properties may be tuned by changing the size of the individual components, which in turn alters the composition of the material. To develop a thermally conductive and electrically insulating composite material with high thermal conductivity and an acceptable breakdown strength, polymethylmethacrylate...
XLPE(Cross-Linked Polyethylene) power cable is expected to be applied to a long distance power transmission cable in HVDC systems. DC transmission system is effective for the long distance power transmission, and XLPE cable is not necessary to give a periodical maintenance procedure. However, when DC high voltage is applied to XLPE, it is said that on electrical breakdown may occur due to an effect...
A dielectric elastomer generator (DEG) is one of the energy harvesting devices that convert mechanical energy into electrical energy. The electrical energy output of DEG depends on the rate of change in the capacitance of dielectric elastomer (DE), which is an elastomer sheet sandwiched between two compliant electrodes. When the thickness of DE is decreased by stretching, the geometric capacitance...
Insulating materials are frequently used in spacecraft's structure and especially as thermal blanket which are protecting the electronic devices. Their behavior in relation to an electron beam irradiation due to space environment must be clearly elucidate. For example, when the electron beam is irradiated to the material, it charged up and a large electric potential difference generate between the...
Transformer real-time monitoring systems have been studied for the last decade for developing transformer prognosis techniques. Transformer mechanical defect is one of those crucial subjects which need to be taken into account for prognosis before failure is occurd for transformer. Among all mechanical defects in transformer, transformer inter-disc short circuit is quite common in transformer fault...
High voltage insulators are widely deployed in power systems to isolate the live- and dead-part of overhead lines as well as to support the power line conductors mechanically. Permanent, secure and safe operation of power transmission lines require that the high voltage insulators are inspected and monitor, regularly. Severe environment conditions will influence insulator surface and change creepage...
In recent years, development of computers and progress of calculation algorithms promote understanding of the various mechanisms of characteristics of electrical insulating materials using quantum chemical calculation. This paper deals with quantum chemical calculation of the relative permittivity εr of dicyclopentadiene and tricyclopentadiene resins expected as the next generation electrical insulating...
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