Materials Literature
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The covalent incorporation of C60 into one block of a poly(1,4-(2,5-dioctyloxy)phenylene vinylene)-based diblock copolymer resulted in a donor–acceptor diblock copolymer, which demonstrated a very efficient electron transfer upon excitation of the PPV block. The strong quenching of the photoluminescence from the PPV b…
Analyzing mechanism of the chip formation is a significant way to understand the metal cutting process better. The characterization of serrated chip formation in high speed machining of hardened AISI1045 steel is investigated with the aid of optical microscopy and micro-hardness measurement in this paper. The chip mor…
This paper presents a high-mobility low-power ZnO thin film transistor deposited at low temperature on plastic substrates. A mobility of 52 cm2/Vs is achieved for this transistor, signifying its application in flexible electronics and displays.
Equivalent electric circuits allowing the simulation of the behaviour of nanocomposites based on thermosetting resin and nanocarbon filler over a broad range of frequency are presented. The electric circuits are constructed by employing a multi-step simple procedure in which the values and number of the parameters are…
We have revealed a giant exchange bias (EB) in a colossal magnetoresistance Nd2/3Ca1/3MnO3manganite at low temperatures, evident of its intrinsic interface exchange coupling. The phenomenon found confirms our previous assumption that the low temperature magnetic structure of the compound is represented by small (nano-…
We present a metamaterial-based sensor for use at terahertz (THz) frequencies that is suitable for the measurement of the thickness and the refractive index of a dielectric sample material. The sensor is designed to operate in reflection geometry in the frequency range between 1 THz and 1.6 THz. Deep-subwavelength sam…
The heterometallic, single-source precursor with formula {[CoSr(2,3-pdc)2(H2O)5]·3H2O}n(1), has been synthesized and investigated by elemental analysis, IR-spectroscopy, thermal analysis (TGA) and single crystal X-ray diffraction. The compound 1 crystallizes in the triclinic space group P−1 and is self-organized in a…
10.1080/08940886.2012.720158-F0001 Figure 1: Generic ARPES experimental set-up. Angle-resolved photoemission spectroscopy, or ARPES, is a preeminent tool for determining the electronic structure of...
Damping - dissipation of mechanical energy - has significant effects on only some types of vibrations. Damping can result from many mechanisms, many of which cannot readily be modeled, but prediction of details of motions requires correct representations of the dominant mechanisms. The assumption of viscous damping pe…
The excitations of luminescence in irradiated and non-irradiated ruby crystals are investigated by means of highly polarized synchrotron radiation. In the VUV luminescence spectra the existence of quick and slow emission was observed in irradiated and nonirradiated crystals. The luminescence bands with maximum at 3.8…
Treeing resistance parameters for polystyrene, polymethyl methacrylate, and polycarbonate are presented in this paper. It has been shown that for polymers with residual mechanical strain the greatest treeing resistance is observed for samples with higher tensile yield strength. To decrease the treeing growth rate or i…
Luminescent properties of magnesium tungstate were investigated. Two samples of MgWO4single crystals grown by different methods were studied. Only intrinsic luminescence attributed to exciton emission was detected for the both samples and. It was shown that the temperature dependence of the low-energy edge in the exci…
The general principles of structural health monitoring by ultrasonic waves with high resolution monitoring of the time dependence of the transport properties are presented. Reported are essential aspects of the theoretical background together with the results of modeling relating to the developed monitoring scheme and…
Through the low-temperature sintering method, a sintered body with excellent characteristics was produced in an eco-friendly niobate-based piezoelectric ceramic, whose application was low in expectation due to poor sinterability. Li 2 CO 3 was added in excess to (Na 0.49 K 0.45 Li 0.06 )NbO 3 , and ceramics were manuf…
Mixed Ni-Co-Cu oxymanganospinels of Cu0.1Ni0.8Co0.2Mn1.9O4chemical composition are first developed for possible application as high-precise NTC thermistors using nanophase segregation effects controlled by sintering technological route. It is shown that rack-salt NiO phase in these ceramics occurs a decisive role on p…
The Feature Article by Sirringhaus et al. (pp. 1655–1676) is focused on understanding the charge-transport physics of high-mobility organic semiconductors at a molecular level. Recent high-mobility small-molecule and conjugated polymer materials are reviewed, with a focus on crystalline materials that have been able t…
Recently we developed several domestic software packages to simulate photonic band structures [1]. In the following we will discuss some of the key numerical features of a typical photonic band structure code, and we point out some of the major advantages and disadvantages of the underlying algorithms. We also suggest…
In situ high-resolution neutron powder diffraction along with electrochemical analysis was used to study fatigue processes in commercial LiCoO2(18650-type) batteries. The electrochemical and structural behavior of cathode and anode materials in fully charged and discharged states has been studied for cells exhibiting…
Hydroentangling (bonding of fabrics by means of high velocity water jets), is utilised to entangle polyethylene terephthalate (PET) and glass fibre layers which are industrially applied as high performance carriers for bitumen roofing products. Conventionally, a resin post-treatment is frequently applied to strengthen…
Poly(D,L-lactide) (PDLLA) was synthesized firstly by the ring-opening polymerization of D,L-lactide using tin(II) 2-ethylhexanoate as catalyst in supercritical carbon dioxide (scCO2). Then, PDLLA porous scaffolds were prepared in situ by scCO2extraction/pore forming technologies. The structure and the molecular weight…