Materials Literature
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Due primarily to cell sourcing issues, many in the field of tissue engineering have opted to create scaffolds that promote in situ regeneration, using the body as both the bioreactor and the cell source for the remodeling of scaffolds, resulting in the formation of native tissue. This practice raises many concerns, wi…
The kinetics of molybdenite oxidation was studied by non-isothermal TGA-DTA with heating rate 5 oC.min -1 .The model-fitting kinetic approach applied to TGA data .The Coats-Redfern method used for model fitting. The popular model-fitting gives excellent fit for non-isothermal data in chemically controlled regime. The…
The emergency power supply system, which is composed of a SMES system cooled by liquid hydrogen and a fuel cell (FC), is proposed as a backup for supplying electricity to hospitals, high-rise office buildings, and intelligent equipment. The capacity of the system is 2 MW for 10 hours. At a power failure, the SMES imme…
Two ZnO nanostructures with multisegment structure have been synthesized by a chemical vapor deposition (CVD) method on a silicon substrate. The top size of the nanostructures can reduce to 10−30 nm, which is beneficial to field emission applications. Scanning and transmission electron microscope methods are applied t…
In this study, BiFeO 3 (BFO) epitaxial film was deposited on SrRuO 3 (100)/SrTiO 3 (100) substrates by pulsed laser deposition (PLD). Phase-pure BFO thin film was obtained by introducing a mask between the target and the substrate in the deposition chamber. The use of the mask brought about an improvement in the morph…
Semi-cycloaliphatic (semi-alicyclic) polybenzoxazoles (PBOs) were investigated as candidates for flexible plastic substrates for liquid crystal displays (LCDs). PBOs were prepared by the one-pot polycondensation in polyphosphoric acid (PPA) from 2,2-bis(3-amino-4-hydroxyphenyl) hexafluoropropane (BAHP6F) with 1,3- and…
Abstract The use of surface energy (wettability) contrast to direct liquid into designated areas, so that flexible substrates can be coated with a discrete pattern in a continuous, roll‐to‐roll manner is described. The method makes use of a substrate prepatterned with lyophilic and lyophobic regions. When this substra…
Several zirconium alloys with differing weight percentages of Cr, Fe, Cu, and Mo were exposed to flowing, pure supercritical water at 500°C for up to 150 days in an effort to determine their corrosion behavior for consideration in the supercritical water reactor. The weight gains of the alloys were measured, and oxide…
Transformer no-load loss and noise have been reduced considerably because of improved core material and improved core design. The variation of normal or interlaminar flux distribution (z direction) in a three-phase transformer core has been measured under pulse width modulation (PWM) excitation (no-load) with switchin…
A new phase-transition mastering (PTM) process was developed for Blu-ray Disc read-only memory (BD-ROM) mastering. Results obtained with both a 266 and 405 nm laser beam recorder (LBR) are discussed in this paper. The feasibility of BD-ROM mastering was successfully demonstrated on both LBRs. With the insight that 25…
Phosphonium compounds are known to act as corrosion inhibitors of mild steel in acidic solutions. They may be added to hydraulic oils or drilling fluids to provide scale and corrosion inhibition. They can be applied on the substrate by immersion or be incorporated in a polymeric coating. In the present work, allyl tri…
Co 3 O 4 nanowire arrays are fabricated by electrodeposition with following heat-treatment in atmosphere ambient. Photoluminescence is investigated at 295 K. In the experiment, when increasing the excitation light wavelength from 260 nm to 360 nm, two kinds of emissions corresponding to the increasing excitation light…
World Technology Evaluation Center report on Carbon Nanotube Manufacturing and Applications, sponsored by the NSF, ONR, NIBIB, and NIST
Tungsten oxide thin films have been deposited by pulsed dc magnetron sputtering of tungsten in argon and oxygen atmosphere. The as-deposited WO3 film is amorphous, highly transparent, and shows a layered structure along the edges. In addition, the optical properties of the as-deposited film show a steplike behavior of…
A novel bulk-micromachined test structure is presented for the fast and reliable determination of the lateral thermal conductivity of thin films. The device is composed of a heater resistor and thermocouples that are fabricated in polysilicon (poly-Si), and the associated processing and DC measurement procedures are s…
A double-Lorentz (DL) transmission line (TL) metamaterial is proposed for the first time. Both effective material parametersμeffandεeffof the corresponding line exhibit a Lorentz-type dispersion, hence the proposed terminology double-Lorentz. This type of TL presents the interest of being intrinsically tri-band, while…
This paper presents a polycrystalline silicon germanium thermopile specially designed as a power scavenger on human body. The design of both a single thermocouple and the thermopile has been described. The modeling has been performed analytically and numerically. An output power of 1-2 μW with an output voltage of abo…
Cobalt ferrite powder was synthesized by chemical co-precipitation followed by a heat treatment at 1100 degC for 10 h, and was subsequently deposited onto titanium and alumina substrates using atmospheric plasma spraying technique. X-ray diffraction results indicate that the as-deposited coating consists of spinel and…
An investigation on partial discharge (PD) propagation in power cables is carried out in this paper with the aim of inferring limits for PD detection as a function of the distance between PD source and detector. Although this problem has not an exact solution unless noise levels are not specified, useful information c…
The structural, electronic and optical properties of two principal representatives of spinel oxides CdGa2O4 and CdIn2O4 have been investigated using the full-potential augmented plane-wave plus local orbitals method within density functional theory. We used the generalized gradient approximation (GGA) for the exchange…