Materials Literature
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Irradiation effects of gas cluster ion beam (GCIB) were studied on Co3Fe7 films as a novel etching process. Etching depth of Co3Fe7 increased with increasing the acceleration voltage (V a) and the ionization electron voltage (V e), however, there is a tradeoff between etching rate and the surface roughness. Because mu…
Power and distribution transformers are some of the most important components of the energy system, and the aging of these devices during normal operation is inevitable. From the beginning of the manufacturing process, a strict control over the quality of materials used for the construction and assembly of transformer…
The reaction mole ratio of monomers, pH value, reaction temperature and time factors directly affect the properties of urea-formaldehyde resin (UF)/low melting point paraffin wax microcapsules during in situ polymerization process. The effects of these factors on the thermal storage capacity, particle size and distrib…
Electronic structure and chemical bonding in tetragonal KNbO3 have been studied by first-principles calculations. The band gap is indirect and a value of 1.64 eV was determined. Chemical bonding feature shows that a significant hybridization between Nb 4d and O 2p states. The bonding between K and NbO3 is mainly ionic…
A design of low-power voltage detector (VD) based on current comparison technology is presented. This VD samples the power supply voltage and converts the sampled voltage to a current which will be compared with a reference. The current comparison technology simplifies the design without use of the resistor string and…
A new laser ablation/inkjet process has been developed for the interconnect of thin film photovoltaic modules. This process involves laser ablation and inkjet printing of insulator and conductor materials carried out with high precision. Any error will compromise the device efficiency by increasing the series resistan…
A pore sealing process by Plasma-enhanced ALD (PEALD) with an amino-silane precursor has been developed, which enabled simultaneous restoration and pore-sealing film formation on damaged low-k film with k = 2.0. The precursor adsorbed preferentially at OR termination on the low-k surface to form self-assembled (SA) Si…
Purpose: Use optically stimulated luminescent dosimeters (OSLD) whose visible active luminescent area were masked as a remote audit tool to measure small field photon doses down to a 7.5mm diameter field size. Methods: Different aperture mask sizes (1, 2, and 3mm) were made for the OSLD nanodots and tested to determin…
A low temperature solution approach was employed to grow zinc oxide (ZnO) nanorods with various aspect ratios. Va r i o u s sizes (diameter-10-25nm) of the nanorods were grown by changing the concentrations of the growth solution. The length (50nm-500nm) of nanorods was controlled using growth times. These one-dimensi…
The propagation of an ultrashort optical pulse in a multilayer structure formed by alternating graphene and boron nitride layers has been considered. Conduction electrons of this system have been described within the long-wavelength effective Hamiltonian in the case of low temperatures, and the electromagnetic field h…
Zinc phosphide (Zn3P2) thin films (~10 μm) have been grown by close-spaced sublimation. The electrical, optical, and crystallographic properties of the synthesized Zn3P2are measured. The as-grown films exhibit hole carrier concentrations of about 1016holes/cm3, resistivity on the order of 102Ohm·cm, and large grain si…
Dominant aim of the contribution is focused on investigation of very thin SiO2/a-Si:H interface properties. After PECVD deposition, surface of a-Si:H is not covered by reproducibly defined insulating layer. Therefore, three basic types of oxygen plasma sources were used for treatments of a-Si:H surfaces. Electrically…
We carried out first-principles calculations to study the electronic properties of SrO-terminated and TiO2-terminated SrTiO3(001) surfaces with La-doping at the surface. We find that an intrinsic lower-lying state at the SrO-terminated surface can accommodate a two-dimensional electron gas (2DEG). By introducing La-do…
In the frame of the new grant signed in November 2011 between Fusion for Energy (F4E) and the ECHUL-CA consortium, the development process of the Electron Cyclotron Heating and Current Drive (EC H&CD) Upper Launcher (UL) in ITER has moved a step towards the final design phase. The Blanket Shield Module (BSM) is a plas…
We propose a resonant cavity-enhanced quantum-dot infrared photodetectors with a top mirror of Ge/SiO2sub-wavelength grating. With a total thickness of ~7.7 μm, the simulated maximum absorption is ~60-70% at 8 μm with an enhancement factor of ~6-20.
We have recently demonstrated [1] p-i-n structure diodes with the intrinsic (i) layers comprising of periodic depositions of silicon quantum dot embedded microcrystalline silicon carbide and silicon rich microcrystalline silicon carbide layers by rf (13.56 MHz) plasma enhanced chemical vapour deposition method. The rf…
The distribution of charge trap depth in liner low density polyethylene (LLDPE) charged either under the DC electric field of 50kV/mm or by 20 KeV electron beam irradiation was studied by photo-stimulated discharge (PSD) method. The photo-stimulated discharge spectra were recorded with the scanning wavelength from 500…
For non-removable components of the future ASTRID prototype, repair operations will be performed in a gas environment. If the faulty area is located under the sodium free level, the gas-tight system will have to contain the inspection and repair tools and to protect them from the surrounding liquid sodium. Concerning…
Abstract This work presents a new pixel circuit using amorphous indium gallium zinc oxide thin‐film transistors (a‐IGZO TFTs) for three‐dimensional (3D) active‐matrix organic light‐emitting diode (AMOLED) displays. Based on the simulation results, the proposed driving scheme successfully compensates for the luminance…
A functional approach has been used to define functions & responsibility sharing of each Local Control Unit (LCU) and Ion Cyclotron Heating and Current Drive (IC H&CD) Plant System Control (IC-PSC). The resulting functional architecture of the IC H&CD control system is detailed in this paper. The paper highlights func…