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Epoxy Molding Compound (EMC) is the encapsulation material that can provide mechanical support and protection to IC packages. In the meantime, it is also a key contributor to package warpage. Finite element analysis (FEA) has been widely used in packaging development to improve product performance more efficiently. EMC is usually modeled as piecewise linear elastic material in FEA model for simplification...
In order to improve the electrocatalysis of oxygen reduction and reduce the captive cost of microbial fuel cell (MFC), graphene-supported catalyst of silver nanoparticles (Ag/RG) was prepared and its activity toward oxygen reduction reaction (ORR) in pH-neutral condition was examined. The Ag/RG catalyst was prepared by chemical reduction of aqueous silver ions to silver nanoparticles on the surface...
Nanodiamonds (NDs) are often considered as inert platforms with high interests for biomedical applications. They are well adapted for drug delivery, and may display embedded fluorescence. We report here on a new way to consider these nanocarbon particles, by revealing therapeutic capacities coming from electronic properties of NDs. With an optimized surface chemistry, the generation of Reactive Oxygen...
Single-crystalline sodium tungsten bronze (Na-WO3) nanorods with typical diameters of 10–200 nm and lengths of several of microns were prepared via hydrothermal synthesis. X-ray diffraction data showed that the as-prepared Na-WO3 nanorods crystallize in a hexagonal structure (space group P6 / mmm) with unit cell parameters a = 7.3166(8) Å and c = 3.8990(8) Å, and elongate along the <001> direction...
This paper is aimed to present an idea of detecting explosives using mobile and satellite communication systems and thus paving a way for in depth research on formulating this idea into practice. The research in both electronics world and chemical world can lead to the development of sensors which can be embedded on the mobile devices. The present technology of satellite communication can be integrated...
This work addresses the need for a closed form expression to calculate the two dimensional (2D) conductivity of graphene that allows researchers to include graphene either as a 2D or a 3D material in their theoretical and numerical electromagnetic analysis. The closed form expression is developed based on the Kubo formula and experimental results found in the literature. Numerical studies reveal that...
High-pressure chemical churning pile is used to reinforce soft soil foundation. Pile, pile soil and mattress layer constitute composite foundation which has large strength and small settlement. In the paper, reinforcement mechanism of high-pressure chemical churning pile is analyzed, strength calculation formula of composite foundation that using high-pressure chemical churning pile to reinforce loess...
This study shows the effect on the morphological structures and surfaces of kenaf fibres after being treated with hydrothermal treatments at three different temperatures using laboratory autoclave. Kenaf fibres were treated using hydrothermal treatments for 30 minutes. The morphology of the kenaf fibres after and before the hydrothermal treatments reveals the true conditions of the kenaf fibres. To...
The Internet became an indispensable part of people's lives because of the significant role it plays in the ways individuals interact, communicate and collaborate with each other. Over recent years, social media sites succeed in attracting a large portion of online users where they become not only content readers but also content generators and publishers. Social media users generate daily a huge...
Accurate estimation of the valve regulated lead-acid (VRLA) batteries ageing, degradation and failure modes are very important for performance maintenance and safe operating conditions. This paper introduces simple but effective techniques that achieve better estimation accuracy. The technique was tested and analyzed by using results obtained from experiments conducted at the YUASA battery laboratories...
To high-performance detection of ultra-low concentration explosive vapor, we develop resonant microcantilever sensors by using a nano sensing material of functionalized GO/Au-NPs (gold-nanoparticles in situ grown on graphene-oxide sheet). To achieve specific-modification for fine selectivity and enlarge graphene surface-area for fast capturing the gas-molecules, surface-modified graphene-oxide sheets...
With oleyamine as solvent and reduce agent, Au nanoparticles (AuNPs) are in situ grown on graphene oxide (GO) sheets. Thereafter, porous-layered stack of AuNPs-rGO nanosheets is formed by a gas-phase chemical-reduction step. After the AuNPs modified with 11-mercaptoundecanoic acid (11-MUA) to graft — COOH sensing groups to amine, the functionalized AuNPs-rGO porous-stacked nanosheets are loaded onto...
We report on the synthesis and characterization of Aluminum-based Nano-Particles (AL-NPs). AL-NPs exhibit a very good homogeneity and reproducibility. Extinction spectroscopy measurements show that Al-NPs present sharp localized surface plasmon resonances (LSPRs) in the UV region.
We clarify the importance of three-layers ReRAM stack-structures and provide guidelines for further optimization by both charge injection/removal and oxygen chemical potential. We determine atomistic structures corresponding to the ON-OFF switching process of ReRAMs using ab initio calculations. The cohesion-isolation of oxygen vacancies is found to be a strong driving force in the ON-OFF switching...
We can reduce the grounding resistance of grounding object by reducing the resistivity of the soil, increasing the size of the area of ground, selecting the appropriate shape of the grounding (depth of the vertical ground) and increasing the number of vertical ground, etc. However, when the spot area is limited and soil resistivity is high, traditional grounding technology is difficult to achieve...
The work presented here is a first ever complete intelligent network chemical sensing system with 1) a compact, low-cost, low-power, high-speed nanosensor array-based detector integrated with 2) a smartphone for detection of chemical threats and transmission of sensor data via cellphone communication system to 3) a network cloud for centralizing the chemical sensing information from 29 phone-sensors...
In order to study the diversity mechanism with different decaying type in bamboo, the components and morphology of Phyllostachys edulis, which was decayed by P.c (White-rot) and G.t (Brown-rot) for 12 weeks, respectively, were investigated by XPS method. XPS results showed that the content of C1 decreased and C2, C3 increased decayed by P.c, the disintegration rate of lignin was higher than cellulose...
The aim of this study was to describe a chemical modification on fast-growing woods. After modification, it was found that the bending strength increased 42.7%, the compressive strength parallel to grain increased 37.8%. Moreover, the characteristics of the unmodified and modified samples were studied by X-Ray Diffraction (XRD), Fourier transform infrared spectroscopy (FTIR), and Scanning Electron...
The objective of the present work was to evaluate the possibility of converting three different kinds of paper sludge (PS) into ethanol using xylose-fermenting yeast SHY07-1 and common yeast SHY08-3 in separate hydrolysis and fermentation (SHF). Effects of pH, temperature and enzyme loading on saccharification of different PS were investigated and the enzymatic hydrolysis performance of chemical pulping...
Oil palm trunk (OPT) is one type of agricultural waste material from palm oil industries. The material has big potentials in biocomposite industries. Nanocellulose was extracted from OPT fibers by a chemi-mechanical technique. Chemical characterization of OPT nanofibers confirmed that cellulose content was increased after alkali and acid treatment. FTIR result demonstrated that chemical treatment...
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