Materials Literature
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MgO nanopowders with average size 20 and 40 nm were introduced into (Bi 1.6 Pb 0.4 Sr 2 Ca 2 Cu 3 O 10 )(MgO) x ( x = 0 – 0.15 wt.%) in the pellet form. The optimum amounts for the highest transport critical current density J c were x = 0.10 and 0.01 wt.% for 20 and 40 nm MgO, respectively. These results were used to…
The subject of the present work is the numerical verification and experimental validation of the FEM model which would enable us to analyse the vibrations of collecting electrodes. The effectiveness of electrostatic precipitators (ESP) depends on many factors. One of these factors is the efficiency of periodic cleanin…
Schmidt impact hammers are the most widespread devices used for non-destructive testing of concrete for compressive strength. Beside them, also non-standard methods (through Mašek P.D., for instance) are in use to measure informative concrete strength. Theoretically it is supposed that same compressive strengths is ob…
Since the introduction of fluorinated self-assembled monolayer (FSAM) as a buffer layer increases the work function of indium tin oxide (ITO), it is effective for increasing in open voltage. The open voltage of organic thin-film photovoltaic cell (OPV) depends on the difference between the highest occupied molecular o…
The processes in the arc chambers of AC plasma torches, of 1–2 MW power, with rod electrodes, designed to run on nitrogen, hydrogen, and argon, as well as with rail electrodes to work on oxidizing media, are considered. The possibility (the efficiency) of application of such plasma torches for gasification and pyrolys…
A group of austenitic steels exhibit high deformability and strength due to TRansformation Induced Plasticity (TRIP) and/or TWinning Induced Plasticity (TWIP). The phase transformations of the TRIP and TWIP steels have been examined in details in many FeMnX alloy systems (X: Ni, Al, Si). However, less attention was gi…
Despite the fact that the SU-8 is a useful material for micro-fabrication of MEMS devices using the photo- lithography process, its poor tribological properties restrict its wider applications. It was postulated in our previous study that adding perflouropolyether (PFPE) lubricant to SU-8 possibly promoted chemical re…
A novel composite film modified electrode was prepared by combining the strong electrostatic adsorption ability of positively quaternized carbon nanotubes (q-CNTs) and excellent electroactivity of ionic liquid (1-methylimidazolium trifluoroacetate) doped polyaniline (IL-PANI) for the determination of ascorbic acid (AA…
Nanocrystalline silicon (nc-Si) thin film transistors (TFTs) are well suited for circuit applications that require moderate device performance and low-temperature CMOS-compatible processing below 250°C. Basic logic gate circuits fabricated using ambipolar nc-Si TFTs alone are presented and shown to operate with correc…
BACKGROUND: Conventional anti-microbial therapy largely consisted of systemic administration of various drugs effective against periodontal pathogens, but fraught with several problems. Based on the concept of local drug delivery a bioresorbable device made of pure fibrillar collagen has been developed. The aim of thi…
The response of chemical vapor deposited (CVD) diamond thin film to focused ionized particle irradiation was investigated in order to evaluate the film's use as a transmission detector for heavy ion hits from azimuthally varying field (AVF) cyclotron at the Takasaki Advanced Radiation Research Institute, Japan Atomic…
The porous ceramic substrate mainly consists of Si3N4 that repels Si melt was prepared. Porous structure with pores in micron-order was prepared by thermal decomposition of polymethylmethacrylate spherical micro-particles of 2–10 µm in diameter. The contact angle between Si melt and the porous substrate is a maximum o…
On-chip nanoporous gold (NPG) fabrication has been successfully developed by Au-Sn alloys electrodeposition and dealloying process, to use its compressible body and nanostructured surface for micro electro mechanical systems (MEMS) applications. Anodically-bondable low temperature cofired ceramic (LTCC) substrates are…
The self-assembly of three peptides containing various conformationally flexible and rigid γ-amino acids has been investigated. In the solid state, peptide 1 adopts an extended backbone conformation, peptide 2 forms a turn-like structure and peptide 3 adopts a kink-like conformation, which are consistent with the incr…
Sol-gel combustion was employed for the synthesis of Ce0.9 GD0.1O1.95or10GDCnanopowder. Optimum fuel ratio and surface modification were closely examined. The fuel/metal molar ratios were ranged from 0.78, 0.83, 1.5 and 2.0. The results showed that increasing the fuel/metal ratio to above 0.78, which was the stoichiom…
Silicon carbide (SiC) is an advanced engineered ceramic material appropriate for operation in extreme environments. Manufacture of components from this material is extremely challenging due to its high hardness, brittle characteristics and poor machinability. Severe fracture can result when machining SiC due to its lo…
Quantities AZ80 magnesium alloy billets were compressed with 60 % height reduction on hot process simulator at 473, 523, 573, 623, 673, 723 K under strain rates of 0.001, 0.01, 0.1, 1 and 10 s-1. In order to predict the occurrence of surface fracture, the critical damage factor based on the Cockcroft-Latham equation w…
Polyion complex (PIC) micelles are expected to be used as nanocarrier for drug delivery. The PIC micelles formed by cationic anti-cancer drug, doxorubicin (DOX) and poly(ethylene glycol)-block-poly(4-vinylbenzylphosphonate) (PEG-b-PVBP) (DOX@PNP) was prepared with different pH conditions and composition ratio of the m…
The high temperature phase of manganese vanadate h.t.-Mn3(VO4)2 and the solid solution with NaMn4(VO4)3 (Na(x)Mn(4.5-x/2)(VO4)3) were shown to order ferrimagnetically below 55 K for x < 1, whereas NaMn4(VO4)3 is an antiferromagnet. The materials show very soft magnetic properties with low coercitive fields required fo…
The synthesis and aggregation behaviour in aqueous media of novel amphiphilic poly(ethylene oxide)-block-poly(n-butyl acrylate)-block-poly(acrylic acid) (PEO–PnBA–PAA) triblock terpolymers were studied. Terpolymers composed of two highly asymmetric hydrophilic PEO (113 monomer units) and PAA (10–17 units) blocks, and…