Materials Literature
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Electromigration has been characterized in via-terminated interconnect lines with additional vias in the middle, creating two adjacent segments that can be stressed independently. The mortality of a segment was found to depend on the direction and magnitude of the current in the adjacent segment, confirming that there…
The paper presents a review of the most important measurement methods applied to determination of yarn attributes and a project of new automatic computer method of yarn image processing and analysis. The yarn feature that we examined is hairiness because of its importance for textile industry. Proposed construction of…
In this paper, we present an improved RNA model considering the iron loss. Furthermore, we examine a proper excitation direction for a 6/4-pole SR motor.
In this research, a dc thermal plasma reactor was used to produce ZnO nanorods with a diameter of about 30nm and a length of 100–200nm. In the photocatalytic study, visible light absorption of the ZnO nanorods was achieved by doping up to a few thousands ppm of nitrogen. The nitrogen-doped ZnO nanorods under the visib…
Recently, morphing concepts for UAV or MAV have been significant issues in aerospace engineering. Morphing wing concept, a biomimetic technology in aerospace engineering, has been realized by various methods including changes of wing's cross-section, plan form, and spar position. This paper investigates a morphing win…
A series of block copolymers that contain rigid liquid crystal forming blocks of poly( p -phenylene terephthalamide) (PPTA) and flexible blocks of hexamethylene adipamide (PA 6,6) have been synthesized. The polymers have been prepared in a one-pot procedure by addition of PA 6,6 monomers to an amine-terminated PPTA ol…
Phenyl ethyl alcohol was used for fast and stable dispersion of carbon nanotubes. This solvent, more effective than ethanol and toluene, allows easy dispersion of carbon nanotubes for TEM characterization. For TEM grids prepared at high dilution, it is possible to observe each tube separately. Applying that solvent, i…
Biodegradable polymers have incessantly gained salience in medical technology and regenerative medicine during the past few decades. These biomaterials are used in temporary implant devices, wound sutures and drug delivery systems. The relation between characteristics of a material and its ability to degrade is still…
The improvement in the catalytic reduction of nitrogen oxides (NOx) by means of the ozone injection into the exhaust gas was investigated. Nitric oxide (NO) in the exhaust gas was first oxidized to nitrogen dioxide (NO2) by ozone, and then the exhaust gas containing the mixture of NO and NO2 was directed to the cataly…
A photochromic all-optical switch in telecommunication-grade fiber is fabricated by filling a fiber Bragg grating Fabry-Pérot resonator with a spiro-oxazine solution. The narrow linewidth of the resonator allows for a high sensitivity of the resonance wavelengths to the index change. The switch is controlled by low in…
Atom transfer radical polymerization has been applied for the first time to synthesize optically active, photochromic methacrylic polymers having three-arm star structure, starting from a central core of C 3 symmetry that can be used to investigate the conformational origin of chirality in this class of synthetic mate…
We report on the properties of Pb(Zr0.3Ti0.7)O3∕PbTiO3 (PZT/PT) multilayer thin films for pyroelectric infrared sensor application. The effect of various PZT and PT stacking sequences has been systematically studied. The optimal structure for pyroelectric infrared sensor application is found to be the multilayer 5PZT/…
With 35 taxa reported by Hustedt (1942a), the genus Surirella (Turpin) is one of the most taxonomically rich and important genera in the Malili Lakes, a system of five ancient lakes located on the island of Sulawesi, Indonesia. We examine in detail the taxonomy of diatoms within the genus Surirella from the Malili Lak…
Abstract The objectives of this study were to improve the dimensional stability of medium-density fibreboard (MDF) by heat treatment and to determine the effects of the treatment on the mechanical properties and vertical density profile of the panels. MDF panels were produced from untreated fibres and fibres treated a…
In this work, a photothermal-resistance technique is developed to characterize the thermophysical properties of one-dimensional micro∕nanostructures. In this technique, a periodically modulated laser beam is used to achieve noncontact heating of suspended individual wires. The temperature response of the sample is mon…
A field-emission triode based on the low-temperature (75/spl deg/C) and hydrothermally synthesized single-crystalline zinc-oxide nanowires (ZnO NWs) grown on Si substrate with a silicon dioxide (SiO/sub 2/) insulator was fabricated for the controllable field-emission device application. Field-emission measurement reve…
Abstract Three supramolecular isomers of an Fe–NCS complex and two isomers of an Fe–NCSe complex bridged by 1,2-di(4-pyridyl)ethane have been obtained. 57Fe Mössbauer spectroscopy revealed a drastic change in the QS value by changing the structure and by changing NCS to NCSe. Solid-to-solid transformation was observed…
We utilize spin-casting and ultraviolet (UV) light-induced polymerization to make organic−inorganic nanocomposite thin films. The initial mixture consists of polycaprolactone (PCL) stabilized gold nanoparticles, reactive monomer alkoxytitanium triacrylate, and photoinitiator benzophenone, dissolved in n -butyl acetate…
Reaction of Ti[N(But)Ar]3 (Ar = 3,5-C6H3Me2 or Ar' = C6H5) with CO2 at -40 degrees C produces diamagmetic Ti(III) paddlewheel complexes with long Ti-Ti separations (>3.4 Angstrom), thus excluding direct Ti-Ti bonding. 1H NMR spectroscopy shows that the compounds are diamagnetic in solution in the temperature range of…
Magnetomechanical coupling factor, piezomagnetic d-constant and magnetic permeability are reported as a function of magnetic field and applied stress for stress annealed Fe-Ga and Fe-Al alloys. Magnetic field dependences of the samples were measured as a function of the intrinsic saturation flux density (Js), lowest o…