Materials Literature
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High quality SiO2with atomic flat interface was grown on SiC rapidly at room temperature with growth rate of over 3 nm/min using high pressure (~6 kPa) microwave plasma oxidation method. Thermodynamic calculation reveals that high pressure atomic oxygen is helpful to remove the residual carbon and suppress the SiO (g)…
Partial discharge (PD) detection in high voltage equipment is a vital solution for the identification of insulation degradation. It is a regular strategy of detecting the PD by acoustic emission using conventional methods like piezoelectric transducers (PZT) but this method has drawbacks such as low sensitivity and fa…
Power quality disturbances occur in the power system. It becomes a good challenge for researches to get better results in the detection and classification of these problem. A new combination method in identification and classification of power quality disturbances is presented in this paper using Mathematical Morpholo…
In aerospace applications research efforts are focusing on the design of advanced composite materials reinforced with nano fillers. Such advanced materials combine weight saving with multifunctional properties, including mechanical. In the present investigation, multiwall carbon nanotubes (MWCNTs) nanoparticles were d…
L'oxydation laterale selective des semiconducteurs III-V presentant une forte teneur en aluminium est une etape technologique generalement utilisee pour la fabrication des lasers a cavite verticale emettant par la surface (VCSEL) et des composants d'optique guidee. Dans les deux cas, a partir de mesas graves, cette tr…
O objetivo deste trabalho foi o de tratar termicamente, por cementacao e solubilizacao, e caracterizar amostras de aco AISI 304H inoxidavel austenitico afim de simular os efeitos do processo termico de envelhecimento em um ambiente redutor. A peca do presente trabalho foi recebida contendo dimensoes de 200 mm x 100 mm…
Non-planar device structures such as FinFETs are widely used in advanced CMOS technology, the non-planar structures with confined narrow channel region and the low thermal conductivity of materials will prevent heat dissipation, resulting in a localized lattice temperature rise, named self-heating effect (SHE) [1]–[3]…
Resistive random-access memories (RRAMs) are overwhelmingly viewed as potential candidates for the next generation of non-volatile memory devices. Here, we discuss the advantages of the kinetic Monte Carlo (KMC) simulation framework for RRAMs. We use a robust KMC simulator to analyze transport in promising oxide struc…
Achieving high voltage quality for electrical power system with small size device and low cost has a great interest recently. This paper proposes a three-phase transformer-less dynamic voltage restorer (DVR) system that can mitigate the voltage disturbances in electrical distribution network. The proposed DVR system d…
Recently, solution processed metal oxide (MO) attracts wide interests due to the advantages including low-cost fabrication, procedure simplicity and vacuum-free technique. Within the paper, the synthesis mechanism of metal oxide deposited through solution process is firstly briefly introduced. Then the recent advances…
This paper describes the preparation process improvement for graphene biosensors, and the organic matter contamination reduction on the graphene surface. It also shows that the graphene biosensors are capable of responding to the saliva through surface protein absorption. These lead to that this graphene biosensor tes…
Ge is one of the promising candidates for use as high mobility channels in future CMOS device. The mobility of an electron and a hole is much higher in the Ge channel than in the Si channel. On the other hand, for 10-nm-node CMOS and beyond, a multi-gate fin structure is utilized to maintain electrostatic controllabil…
A microestrutura porosa do coque pode ser definida como a relação espacial entre a matriz carbonosa e seus poros.A formação da microestrutura ocorre durante o processo de carbonização dos carvões coqueificáveis.Portanto, o conhecimento das propriedades que governam a formação da microestrutura torna-se atrativa como u…
The letter designs a novel frequency selective surface (FSS) with reconfigurable passband. Each unit consists of upper and lower metal and the dielectric material. The upper and lower metal are the same. The upper metal consists of a folded metal ring and the cross-shaped fold line. By loading and adjusting the adjust…
This paper presents a new design technique to reduce the thickness of the transmitarray (TA) panel while maintaining 360 o phase shift range. Two types of unit cells, the receive-transmit unit cell and the frequency selective surface (FSS) unit cell, are placed in the same aperture. Comparing to the existing ultra-thi…
A novel flat lens based on metamaterials is presented in this paper. The metamaterial lens is composed of metallic lattice and squared metal patch, which can find significant gain enhancement by 3.5 dB between 1.30 GHz and 1.35 GHz without affecting the reflection coefficient of the antenna. The lens enables electroma…
The calculation process of the design calculation of the centrifuge structure is proposed, and the finite element analysis and calculation of the typical components of the centrifuge are carried out, and the optimization analysis of the structural design is realized. The corresponding modal analysis calculation proces…
A miniaturized dual-polarization frequency selective rasorber (FSR) with meandering structure is proposed, which express a transmission window between two absorption bands. The FSR consists of a lossless layer and a lossy layer. The lossy layer is a folded cross fractal structure that four resistive sheets are loaded…
Because of their unique and excellent properties, gold nanoparticles (GNPs) have been widely used in biological monitoring, cosmetics and clinical fields. In this study, PEG200, as a component, and ascorbic acid, as a reducing agent, were used to develop a rapid one-step method for GNPs synthesis at room temperature.…
The FDTD methods combined with Surface Susceptibility Model (FDTD-SSM), compared to traditional brute force metasurface simulation, have been proved efficient and accurate for fast metasurface analysis. However, the present work is limited to scattering elements that are either isotropic or that have diagonal surface…