Materials Literature
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We report a novel method for the synthesis of ultra-bright green and red colored protein dots (Pr-dots) using continuous and pulse lasers ( λ = 534 and 1064 nm) with lysozyme as a precursor in ethanol.
In this study, composites were made from source of recycled HDPE and rice husk as filler as well as addition of double coupling agent in order to improve mechanical properties of produced composites.The aim of this study is to know the effect of addition of double coupling agent of maleic anhydride (MA) and maleic anh…
Obtaining of biologically active cellulosic bandage with antimicrobial activity is one of the most interesting trends in the development of new medical materials. This paper investigates the effect of reaction conditions on oxidation of cellulose fiber in a form of bandage with an aim to obtain a material suitable for…
PURPOSES : An conventional method for electric power generation is converting thermal energy into mechanical energy then to electrical energy. Due to environmental issues such as global warming related with emission etc., were the limiting factor for the energy resources which resulting in extensive research and novel…
SUMMARY This paper presents a method for reducing cogging thrust in permanent‐magnet‐type linear synchronous motors. A phase shift method and supplement tooth method are proposed. The methods do not affect the original thrust performance of the linear motor, nor do they greatly modify its basic shape. The methods are…
Sialons (Si5AlON7, Si4Al2O2N6, Si3Al3O3N5 and SiAl4O2N4) were synthesised from high aluminium fly ash by using a carbothermal reduction–nitridation process. The effects of temperature and the addition of carbon black on the phase compositions and morphologies have been investigated using X-ray diffraction (XRD) and sc…
We propose a design method for dense surface-relief diffraction gratings with high efficiency in transmission mode. Closed-form analytical relations between diffraction efficiency, polarization, and grating parameters are derived and verified in the resonance domain of diffraction under general three-dimensional angle…
Diatom analyses of sediments from a high elevation lake situated in an Engelmann Spruce - Subalpine Fir (ESSF) forest of south-central British Columbia, Canada, reveal long-term climate and water chemistry change. During the transition from the late-glacial / Pleistocene to the xerothermic early Holocene, small, benth…
In the scope of application of technical textiles, Non-Crimp Fabrics are increasingly used. In general, NCF exhibit excellent load bearing properties, but caused by the manufacturing process, there are some remaining disadvantages which have to be reduced. Regarding to this, a novel technique of processing NCF was dev…
Corrosion properties of an aluminium alloy 7000 series were investigated by different electrochemical methods. The alloy was subjected to the one-step and to a new two-step precipitation hardening. Polarization measurements in the 3.5 wt. % NaCl solution have shown a more positive value of the pitting potential (Epit)…
In a recent Letter, Yu and Thompson1 report the morphology evolution during growth interruptions of polycrystalline films grown by a Volmer-Weber mode and correlate it with the release of the postcoalescence stress. In particular, the study is focused on Ni films grown by evaporation with a flux of 5 Å/s under high mo…
The failure behavior of the syntactic foams is investigated based on a three-dimensional (3D) micromechanical finite element (FE) model, by varying the volume fraction, the wall thickness of the hollow particles, and the interfacial strength. The maximum principal stress criterion is adopted to determine the state (da…
As is well-known, porous nanomaterials have attracted increasing attention recently, and graphene-related materials (such as porous graphene) have been studied both experimentally and theoretically. Almost all researches are focused on nanoelectronics, supercapacitors, multifunctional membrances, bio-applications or o…
The depth-resolved free-carrier absorption and the photo-acoustic response are used to examine the band-gap absorption in 2D-TlGaSe2 layered semiconductor after its transformation into the ferroelectric F-phase below 107 K. The absorption exhibits unusual behavior with a biaxial character in respect to the light polar…
We report a method of fabricating ultra-clean and hysteresis-free multiwall carbon nanotube field-effect transistors (CNFETs) inside the ultra-high vacuum transmission electron microscope equipped with a movable gold tip as a local gate. By tailoring the shell structure of the nanotube and varying the drain-source vol…
CVD SiC is a perfect material used for molds/dies in hot press molding of glass lens. In its fabrication process, nano-precision polishing is essential finally. For this purpose, a novel polishing method using MCF (Magnetic Compound Fluid) slurry is proposed. In this method, MCF slurry is supplied into a given gap bet…
Cathodoluminescence (CL) analysis enables characterization of optoelectronic materials and devices with high spatial resolution. However, data interpretation is complicated by the competitive nature of the CL generation process. Specifically, spatially resolved CL profiles are affected by both CL center distributions,…
We have investigated the variation of electron velocity in AlGaN/GaN heterostructures depending on illuminating light intensity and wavelength. It is shown that the electron velocity at high electric field increases under above-band light illumination. This electron velocity enhancement is found to be related to the p…
Shape memory alloys belong to a group of smart, functional materials with a unique ability to "remember" the shape that they had before the pseudo-elastic deformation. Cu-Al-Ni shape memory alloys are today the only available high-temperature SMA, showing good resistance to functional load, however their biomedical ap…
Switchability is a highly sought after feature for planar optical systems. Suspensions of nanomaterials can be used for generating controllable changes in such systems. We report a planar diffractive microfluidic lens which integrates controlled dielectrophoresis (DEP) for trapping suspended nanomaterials. Silicon and…