Materials Literature
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A new measurement scheme to characterize MEMS-VCSEL linewidths is demonstrated. Linewidth in the range of 40~60MHz is measured for 1550-nm high contrast grating VCSELs. We identify key contributors of the Brownian-motion-induced broadening for future optimization.
Complexation with casein hydrolysate (Pep) can be used for enhancing the water solubility of indomethacin. In the present study, the hydrophilic/hydrophobic balance of the complex (Indo-Pep) was evaluated using a poly(ethylene glycol)/dextran (PEG/DEX) aqueous two-phase system (ATPS). As the distribution ratio of Indo…
The first data on Bacillariophyta of Lake Donuzlav are recorded in this investigation. Forty species were found in plankton of Lake Donuzlav. Four taxa (Actinocyclus subtilis (W. Greg.) Ralfs in Pritchard, Achnanthes subsessilis Kutz., Amphora mexicana A. Schmidt, and Plagiotropis lepidoptera (W. Greg.) Kutz. var. int…
Perpendicular orientation of block copolymer (BCP) domains in thin films is generally preferred over parallel orientation for lithographic applications. [1] Thermal annealing can be used to promote this orientation, but often requires a top coat since one block will typically wet the air interface. [2] Solvent anneali…
The characteristics of each method for synthesis titanium carbonitride were introduced. The property of titanium carbonitride synthesized by each method is affected by raw materials, parameters and external conditions. The application of titanium carbonitride is mainly on cermets cutting tools, it also exhibits a lot…
We have investigated the chromium-iron alloy and compared it to the oxides α-Fe2O3 (Eg = 4.8eV) and α-Cr2O3 (Eg = 2.1eV). It is known that α-Cr2O3 and α-Fe2O3 both adopt a corundum-type structure, but display differences in the lattice constants, direct band gap, and magnetic ordering of the cations. The chromium-iron…
We report on the synthesis and photoelectrochemical characterization of photocathodes based on CdS-sensitized Ni–NiO core-shell nanowire mesh inverse opals (IOs). Compared to the NiO–CdS nanowire mesh IO electrode, the hole diffusion coefficient of the CdS-sensitized Ni–NiO core-shell nanowire mesh IO photocathode was…
Microstructure and micro-mechanical properties of LC4 aluminum alloy were studied before and after treating the samples at 4 GPa pressure. The hardness, elastic modulus and plastic deformation were measured by nanoindenter and the microstructure of the LC4 aluminum alloy was observed by metalloscope and scanning elect…
Direct epitaxial integration of crystalline AlGaP/GaP distributed Bragg reflectors on Si has much potential to reduce Brownian thermal noise in mirror coatings. Growth, characterization, and future prospects of these materials are discussed.
We synthesized unexplored activator-Fe doped silicon oxynitride microwires by a simple CVD method. This microwire can generate SPP when induced by photons/electrons. It exhibits three significant features, a stable emission peak, the ability to act as a plasmon nonlinear laser and displays mutual light beams interfere…
Abstract Layered metal-dielectric metamaterials have filtering properties both in the frequency domain and in the spatial frequency domain. Engineering their spatial filtering response is a way of designing structures with specific diffraction properties for such applications as sub-diffraction imaging, supercollimati…
Fe 3 O 4 –ZnWO 4 composite microspheres with magnetically recyclable photocatalytic performance have been firstly synthesised by a simple refluxing method under mild conditions. The as‐prepared Fe 3 O 4 –ZnWO 4 composites show good photocatalytic efficiency in degradation of rhodamine B under UV light irradiation and…
Impedance spectroscopy of many ceramics is a challenge due to their high electrical resistance. Small disturbances can significantly alter the measuring results. In the present paper, it is shown how impedance measurements can be performed in an electromagnetically noisy ac furnace, using consequent Faraday shielding…
Cubic shaped YBO3:Tb3+ green phosphor was synthesized by precipitation from homogeneous solution. Prepared precipitates were identified as Y[B(OH)4](CO3) by X-ray diffraction, and cubic shaped particles of about 2 µm were observed by a scanning electron microscope. By heating at 800°C, the cubic shape of the particles…
The temperatures of the phase transition in a thin ferroelastic film and ferroelastic rod with a square profile were calculated on the base of Landau thermodynamic theory with account of different contact theirs planes with environment at the external mechanical stress, variation chemical composition along a thickness…
Cr(III)–Sn(IV) doped indium oxide was prepared from a polyvinyl alcohol (PVA) based composite foam material by sol–gel processing. The composite foam, initially prepared at ∼100 °C, was further baked at three different temperatures (400 °C, 600 °C and 800 °C) to generate a porous oxide material with different morpholo…
A setup for measuring the refractive indices of transparent solid samples of optical ceramics using shifts of a beam by a plane-parallel plate in a wavelength range of 400–1200 nm was developed. The minimum cross-sectional sizes of the investigated objects are 5–12 mm, and their thicknesses are 0.3–1.0 mm. A standard…
Nanofluids are fluids engineered by dispersing nanometre size structure in a base fluid in colloidal state. The paper discusses the possibility of application of nanofluid as cutting fluid during machining and the associated challenges. It was pointed out by several researchers that substitution of conventional coolan…
Lithium cobalt oxide coatings on 304 stainless steel substrates have been carried out by using cathodic electrochemical synthesis in LiNO 3 and Co(NO 3 ) 2 aqueous solution and subsequent annealing for thin film lithium-ion batteries. The as-deposited film is composed of the mixture of Co(OH) 2 ·H 2 O and LiOH, conden…
This study utilizes radio frequency magnetron sputtering (RF sputtering) to deposit GZO transparent conductive film and Ti thin film on the same corning glass substrate and then treats GZO/Ti thin film with rapid thermal annealing. The annealing temperatures are 300°C , 500°C, and 550°C, respectively. Ti:GZO transpare…