Materials Literature
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A laboratory scale EUV microscope is presented to be used, e.g., in future inspection of EUV masks and mask blanks in extreme ultraviolet lithography. The system can be operated in bright and dark field mode. For defect inspection purpose the dark field mode is preferred, with increased contrast and sensitivity of the…
The nonoxidative conversion of methane into aromatic hydrocarbons on high-silica zeolites ZSM-5 containing nanosized powders of molybdenum (4.0 wt %) and nickel (0.1–2.0 wt %) was studied. Data on the acid characteristics of the catalysts and the nature and amount of coke deposits formed on the surface of the catalyst…
Scaling of nonlinear two-photon absorption to optical bandgap (which describes the electronic structure of material) in transition metal glasses is given through a proposed empirical equation. A wide applicability of the relation is proven through the 21 studied glasses. The relationship between the calculated nonline…
This paper presents a nanocomposite strain gauge composed of poly(dimethylsiloxane) and multi-walled carbon nanotubes. Possessing excellent mechanical and piezoresistive properties, the biocompatible nanocomposites could withstand large strains repeatedly, which is desirable for miniaturized implantable biomedical dev…
Dielectric elastomer actuators (DEAs) are an emerging class of polymer actuation devices and have extensive application prospect in the field of robotics because of their light weight, high efficiency and large deformation. A cone DEA is manufactured and its working principle is analyzed. To obtain the deformation of…
This paper presents a complete portable laser-based projection system using two one-dimensional magnetic actuated MEMS linear scanning micro-mirrors. Dedicated high speed electronics was developed to drive the MEMS, detect the mirror scanning position at any time and synchronize the two mirrors and the laser pulsation…
A comprehensive study on the effect of Zn-doped SnAg solders on microstructure and electromigration (EM) is reported. Minor Zn doping, about 0.6 wt %, in a SnAg solder alloy is found to be effective in stabilizing solder microstructure and improving EM reliability. Early EM failure modes in Zn-doped solders are signif…
Novel organic redox flow battery is proposed based on 4, 5- dihydroxy-1, 3-benzenedisulfonate and 2, 5 dihydroxy-benzenedisulfonate as positive materials and PbSO4/Pb as negative electrode in aqueous H2SO4solution with an ion-exchange membranes between the positive and negative electrolyte. 4, 5-dihydroxy-1, 3-benzene…
Dynamics of ion internal transport barrier (ITB) formation and impurity transport both in the Large Helical Device (LHD) heliotron and in the JT-60U tokamak are described. Significant differences between heliotron and tokamak plasmas are observed. The location of the ITB moves outwards during the ITB formation regardl…
In this paper, we report on the morphology-controlled synthesis of magnesium micro/nanospheres and their electrochemical performance as the anode of primary Mg/MnO 2 batteries. Mg micro/nanoscale materials with controllable shapes have been prepared via a conventional vapor-transport method under an inert atmosphere b…
Abstract A new well‐defined telechelic macrophotoinitiator of polystyrene was synthesized by combination of ATRP and click chemistry. The ATRP of styrene by means of 2‐oxo‐1,2‐diphenylethyl‐2‐bromopropanoate (PI‐Br) initiator with CuBr/2,2′‐bipyridine yields polystyrene with photoactive benzoin (PI) and bromine (Br) g…
Abstract The results of theoretical and experimental studies of ablation of LiF crystal by X‐ray beam having photons with 89.3 eV and very short duration of pulse τ = 7 ps are presented. It is found that the crater is formed for fluences above the threshold Fabl ≈ 10mJ/cm2. Such a small threshold is one order of magni…
In vitro biomedical engineering of intact, functional vascular networks, which include capillary structures, is a prerequisite for adequate vascular scaffold production. Capillary structures are necessary since they provide the elements and compounds for the growth, function and maintenance of 3D tissue structures. Co…
An energy selective electron (ESE) refrigerator with heat leaks is established in a one-dimensional system. Based on the theory of electronic transport, the expressions of the heat flux into hot and cold electron reservoirs are derived. When the heat leaks between two electron reservoirs via phonons are taken into acc…
Abstract A surface tension implementation algorithm for two‐phase incompressible interfacial flows is presented in this study. The surface tension effect is treated as a jump condition at the interface and incorporated into the Navier–Stokes equation via a capillary pressure gradient. The interface is tracked by a cou…
The effect of Mg addition to PtSnNa/ZSM-5 on the catalytic properties in propane dehydrogenation was investigated. The catalysts were characterized by using different techniques: XRD, BET, TEM, NH 3 -TPD, XPS, TPO, and TG-DTA. Results indicate that the presence of magnesium not only modifies the acid function and the…
Batteries have been used as main energy storage devices in hybrid electric vehicles and portable electronics for many years and they are good in the medium-term low-power applications, but low dynamics and relatively shorter lifespan are their main week points. Due to their fast power response, high power density and…
We have studied experimentally and theoretically the optical and electrochemical properties of small band gap oligo(7,7'-bis(thiophen-2-yl)-5,5'-bisthieno[3,4-b]pyrazine)s with alternating blocks of bithiophene units and bisthienopyrazine units up to a total length of 16 units. The optical absorptions of the ground st…
The possibility of removal of copper(II) complexes with ethylenediaminetetraacetic acid (EDTA) from waters and wastewaters by the chelating ion exchangers Lewatit TP 214, Lewatit TP 260 and Diaion CR-20 as well as the mechanism of their sorption onto them were investigated.In order to describe the sorption process of…
In this study, advanced oxidation processes (AOPs) such as the UV/H2O2 and Fenton processes were investigated for the degradation of 2-hydroxybenzoic acid (2-HBA) in lab-scale experiments. Different [H2O2]/[2-HBA] molar ratios and pH values were used in order to establish the most favorable experimental conditions for…