Materials Literature
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In order to make clear about the effect of cryogenic temperature on the microstructure evolution of alloy, the as-cast AZ91 magnesium alloy was subjected to the cryogenic treatment after solution treatment (415°C,5h) and aging treatment (190°C, 16h) with the protection of graphite power. Transmission Electron Microsco…
The fabrication of high aspect ratio macropore silicon arrays (MSA) on n-type silicon under optimum photo-electrochemical (PEC) etching (anodization) conditions was demonstrated. The depth of the MSA can reach 350 μm with an aspect ratio of more than 100. With the presence of AOS (a type of anionic surfactant) in the…
It has analyzed that there is no difference between positive and radial pressure of the interior of multi-directional squeeze casting solidified body. The isotropy of pressure makes the consistency of heat exchange coefficient of interface, crystalline growth velocity and plastic deformation, which thereby enables the…
This paper presents the interaction relationships between spin coating speed, heat treatment time, and annealing temperature in response to the lattice parameter in ferroelectric Barium Strontium Titanate (BST). The investigation was done using a full factorial design of experiment (DOE). Analysis was done quantitativ…
Using an electromigration procedure which we recently developed, we generate 10 nm-scale single-wall carbon nanotube quantum dot (SWCNT-QD) transistors. Because these devices are so short, we can explore fundamental mesoscopic physics, engineer tuneable nanoelectromechanical systems (NEMS) and create ultra-short trans…
Titanium dioxide (TiO2) films were prepared by thermal oxidation from Ti films. The Ti films were deposited on glass and silicon (100) wafer substrate by dc magnetron sputtering and subsequent with thermal oxidation process. The crystal structure and morphology of TiO2 films were estimated by using X-ray diffractometr…
The value of Luffa acutangula, a species of the melon family, Curcubitaceae as food diminished as the fruit matured. They are then disposed as industrial or domestic waste material. However, the fibers of the matured fruits, also known as lignocelluloses fibers have high mechanical strength and can be used as reinforc…
Propagation of electromagnetic wave (EW) through graded refractive index material is studied theoretically. Green's function technique used to obtain the solution of Maxwell equation in the gradient region for the nonzero angle of incidence wave. Results of our calculations show a resonant increase in the amplitude of…
This study investigated the use of nanoscale bilayers assembly for hydrophobic surface modification on stainless steel plate and its effect on condensation. This study first performed nanoscale bilayers assembly method, with the addition of a fluorosilane treatment using chemical vapor deposition (CVD), to modify the…
Two methods of diffusion alloying process simulation are proposed. There were performed simulations of phosphor diffusion alloying into p-type silicon substrates with the resistivity of ρv= 10 Ohm·cm and with the resistivity of ρv= 0.01 Ohm·cm using two methods of simulation. There were defined that results received b…
High-speed slotless permanent magnet brushless motor based on soft ferrite adopts a large effective air gap structure. For the large effective air-gap, the air-gap flux distribution becomes uneven and the end leakage flux significantly increases. Thus, the traditional analytical method of the phase EMF is inapplicable…
This paper describes the results of research in the tunnel photoelectric effect in microdiode with the localization of an electrostatic field at the emitter of carbon nanosized structure. It is experimentally found that irradiation of carbon emitter by photon beams with low energy (less than the work function) within…
The sustainable development of engineering, mechanical instrument requires higher speed and higher power. It cause a physical damage is excessive damage for underwater rotating system as cavitations and erosion, but also electrochemical corrosion by chloride ion and flow of current in marine environment. In this study…
This paper introduceda study for the methodology of carbon nanotube (CNT) sensor applicable for the strain measurement in microscale. By using the Raman strain sensitive and polarization selectivity of the carbon nanotubes, the analytical relationship of carbon nanotube strain sensor for each polarization Raman config…
The TiO2 thin films were prepared by a dc reactive magnetron sputtering technique from high purity Ti target on silicon (100) wafers and alumina substrates inter-digital with gold electrodes. The as-deposited films were annealed from 400°C up to 800°C with 100 °C steps for 1 hour in air ambience in order to promote mi…
The differences of growth kinetic of urinary crystallites from patients with CaOxa stones and healthy subjects were compared. With the increase of crystal growth time (t), the size of urinary crystallites from patients increased constantly from 10±9 μm att=1 h to 50±45 μm att=72 h, but the number of urinary crystallit…
Desorption experiments of coconut shell activated carbon (CSAC) saturated with Pb2+had been conducted in presence of dual-frequency and single-frequency (30 kHz,500 kHz,1200 kHz) ultrasound. The desorption efficiency was better at dual-frequency ultrasound than at single-frequency ultrasound. The best of desorption ef…
A new corrosion inhibior N,N-diethylammonium O,O-di (p-chlorophenyl) dithiophosphate (EDPDP) has been synthesized and its inhibition effect towards the corrosion of carbon steel in 1.0 molL-1 HCl solution at 25 °C has been investigated by potentiodynamic polarization and electrochemical impedance spectroscopy (EIS) me…
The resistance switching behavior in sputtered Ti/ZrO2/Pt sandwiched structure was investigated for nonvolatile memory application. Multiple current-voltage measurements reveal highly uniform distribution of the conduction current and switching voltage. This bipolar resistive switching driven by bias of proper magnitu…
Fabrication of various sub assemblies and items from imported austenitic stainless steel material of SA 240 - 304L (32 mm to 85 mm thick) was started in the year 1990 and work on these assemblies was stopped in 1993 due to unavoidable circumstances. Items and sub-assemblies were either in partially welded / machined o…