Materials Literature
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A short-range force constant model has been applied in investigating the Raman and infrared modes in insulating Cs 2 HgCl 4 in orthorhombic phase having space group Pnam using normal coordinate analysis. Calculations on zone centre phonons have been made with twelve stretching and three bending force constants. The ca…
KNbO3 (KNO) nano-particles with the diameter of about 20 nm were prepared by mechanical milling using planetary ball mill from the commercial KNO powder. Rotation speeds of ball mill were 0 to 300 rpm, where the milling time was kept at 15 minutes. Magnetization was measured by SQUID magnetometer. The 250 rpm milled s…
The bed material agglomeration and heating surface high-temperature Corrosion Problems of biomass-fired boiler in South China were studied in this work. The inner and outer surfaces of the corrosion sample were investigated by scanning electron microscope (SEM) with Bruker EDX and XRD. Results showed that the outer si…
The application of Titanium alloys is more attractive today in the field of biomedical implant materials due to their superior biocompatibility and strength. Implant wear is a common phenomenon which is resulted due to high friction between artificial materials which is much higher than healthy and natural joints. The…
Diamond film and ultrananocrystalline diamond (UNCD) film were synthesized on BeCu alloy substrate by using hot filament CVD apparatus. We succeed in the synthesis of diamond film and Boron-doped electrically conductive diamond film on the substrate. Moreover, UNCD film was successfully synthesized by the CVD apparatu…
ZnO nanowires were synthesized by thermal evaporation of ZnBr2 powder at relatively low temperatures of 600–700°C under air atmosphere. Any catalysts and substrates were not used in the synthesis of ZnO nanowires. The ZnO nanowires had a typical diameter of 100 nm and lengths up to several tens micrometers. The X-ray…
Views Icon Views Article contents Figures & tables Video Audio Supplementary Data Peer Review Share Icon Share Twitter Facebook Reddit LinkedIn Tools Icon Tools Reprints and Permissions Cite Icon Cite Search Site Citation M. M. Khandpekar, Smita S. Patil; Growth and characterization of L-arginine sulphate: A new nanoc…
The optically transparent single crystals of Glycine Phosphite (GPI) doped with metals, rare earths, dyes and amino acid were grown by both solvent evaporation and temperature lowering techniques. Concentration of dopants was chosen depending on the category of dopants and quality of crystallization during the growth…
Solid solutions based on rubidium monogallate RbGaO2 with a general formula Rb2−2x Ga2−x A x O4 (A = P, V, Nb, and Ta) are synthesized. Their crystal structure and temperature and concentration dependences of conductivity are studied. The highest rubidium-cationic conductivity is (1.8–3.9) × 10−3 S cm−1 at 400°C and (…
The phylogenetic relationships between Baikalian endemic green alga Draparnaldioides simplex C. Meyer et Skabitch., 1976 and holarctic taxa of green algae have been studied using the 18S rDNA gene fragment and internal transcribed ITS1 and ITS2 spacers of nuclear DNA. The Baikalian genus Draparnaldioides was shown to…
Lead Magnesium Niobate (PMN) is prepared by two step solid state reaction i.e. Columbite route. X-ray diffraction pattern of powder of calcined PMN at 800 °C and powder of PMN pellet sintered at 1200 °C have shown some systematic differences in their relative intensity ratios measured by a 2D detector on Indus-2 synch…
ACTA CHIMICA SINICA CuO Fe 2 O 3 CO 2 * * ( 271018) Fe Fe 2 O 3 , CuO Fe 2 O 3 NTs , CuO HCs/Fe 2 O 3 NTs . : Fe 2 O 3 NTs "", CuO
a a a a * ,a ( a 130021) ( b 130032) 5,10,15,20--[4-(N-)](1)[MCo (2), Ni (3), Cu (4), Zn (5)]. - , . 1, 3, 5 , 5 ZnTPP, 2 4 . 25 , .
The dielectric properties of Mn2P2S6 and Cu0.52Mn1.74P2S6 crystals were investigated in broad frequency (20 Hz – 1 MHz) and temperature range (100 K – 470 K). No anomaly in temperature dependence of complex dielectric permittivity indicating the polar phase transition can be detected in measured temperature range. The…
Cyclic ketals and acetals (1,3-dioxolanes) substituted in positions 2 and 4 of dioxolane cycle, which have been obtained via condensation of glycerol and ethylene glycol with aldehydes and ketones. The synthesized compounds show evidence of the antimicrobial activity against both Gram-positive and Gram-negative bacter…
In our paper we present an own-developed method for testing the adhesion properties of several coatings we created. 304 stainless steel sheets were used as carriers First the steel surface was treated by chemical etching and electropolishing. Different electropolishing parameters were used for various surface roughnes…
The thermal degradation of cable ties of polyamide (PA6,6) neat and UV stabilized was investigated by thermogravimetry (TG) and its derivative (DTG) at several heating rates between 5 and 80 oC min-1 in helium atmosphere. High heating rates signal novel peaks in the DTG curves that indicate melting temperature of PA6,…
One-dimensional linear integral constitutive equation of viscoelasticity with an arbitrary creep function is studied analytically. The distinctive features of theoretic curves (creep, relaxation, creep recovery curves, stress-strain diagrams at constant rate) are highlighted that can indicate applicability or non-appl…
Polyhydroxyalkanoates(PHAs) are biodegradable polymers produced by microbes to overcome environmental stress condition. Commercial production of PHAs due to its high cost is limited compared to that of conventional polymers. Another hindrance is the brittle nature and low strength of Poly-3-Hydroxybutyric Acid (PHB),…
Electronic transport in carbon nanoribbon is studied in a quantum graph model. A numerical method for current-voltage curve calculation is proposed. Various optimizations of a parallelization scheme are discussed. A parallel genetic algorithm to solve an inverse transport problem is invented.