Materials Literature
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We have observed the electrical conduction properties of silicon carbide (SiC) that was locally modified by femtosecond laser. The current-voltage (I-V) characteristics of laser-modified regions were measured. Intriguingly, when the polarization of the laser beam was parallel to the scanning direction, the resistance…
Abstract A series of aliphatic biodegradable poly(butylene succinate)‐co‐oligo(L‐valine) (PBSVAL) copolyesters were synthesized with dimethyl succinate, 1,4‐butanediol (BDO), and oligo(L‐valine) (OVL) as reagents. The GPC results show that the weight average molecular weight (Mw) of the copolyester with a feed ratio (…
About 30% of patients treated with cardiac resynchronization therapy (CRT) do not benefit. Several MRI derived parameters have been published for quantification of mechanical asynchrony. Most parameters are based on tagging techniques. Evaluation of the tagging information is often cumbersome due to fading of the tag…
Thermogravimetric and kinetic data of degradation of groundnut (Arachis hypogaea) shell (GNS) in air or nitrogen have been analysed in this study. The elemental composition, ash content and gross calorific value of GNS have been compared with other biomass fuels. Thermogravimetric analysis has been conducted from 25 t…
The specific features of the dielectric characteristics of yttrium formate crystallohydrate are studied. Its frequency dependences of dielectric permittivity and conductivity are obtained and analyzed in the 10 −1 –10 6 Hz range. Anomalies in the narrow temperature intervals of the dielectric properties of yttrium for…
A new statistical method for determining the key factors of the process of field electron emission (FEE) from nanostructures based on a comparison of the microscopic measurements of the work function of electrons with the results of a macroscopic characterization of the FEE is presented. Using the example of nanocryst…
A 76-year-old woman presented with vaginal bleeding and discharge in September 2009. She was admitted to our hospital because a tumor of 5 cm in diameter was found in the vagina in a nearby clinic. She was diagnosed with primary vaginal diffuse large B-cell lymphoma (DLBCL) on biopsy of the tumor because CT, MRI and F…
Avoiding accidents caused by equipment failure and ensuring structure quality are some of the challenges of the petroleum industry. Petroleum exploitation in salt-water has required the use of special materials, such as duplex stainless steels (DSS), that support highly aggressive corrosion conditions and, at the same…
We study the quasibound states in a graphene quantum-dot structure generated by the single-, double-, and triple-barrier electrostatic potentials. It is shown that the strongest quasibound states are mainly determined by the innermost barrier. Specifically, the positions of the quasibound states are determined by the…
Noble metal surfaces are valuable substrates for SAM because of their low chemical reactivity together with high atomic surface mobility resulting in the capability of reordering after molecular deposition. The high electron density at the crystal surface www.intechopen.com Noble Metals 250 provides a charge reservoir…
We investigated the lattice dynamics of the prototypic ferroelectric barium titanate close to its ferroelectric--paraelectric phase transition aiming at a better understanding of the atomistic nature of the transition. The usage of time-resolved X-ray techniques allows to disentangle lattice motion and unit cell chang…
We demonstrated solution-processed C 60 thin-film transistors with high electron mobility. C 60 solutions in various organic solvents were dried in a vacuum chamber to obtain uniform thin films. While C 60 solution dried under atmospheric pressure produced a large number of crystals, vacuum-dried C 60 solution provide…
An interlaboratory exercise was carried out across 12 laboratories to measure the average grain size of a titanium metal sample with an approximate average grain size of 30 µm using Electron Backscatter Diffraction (EBSD). Participants were asked to follow the proposed draft International Standard, ISO DIS13067 Microb…
The tensile and relaxation properties of mono-layer graphene sheets at different temperatures (0 K-3000 K) were investigated based on Molecular Dynamics(MD) simulation with AIREBO potential. The temperature effect on atomic structure of mono-layer graphene sheets during relaxation was analyzed as well as the relations…
Here we communicate our experimental results on the synthesis of silver nanoparticles in solution and thin films using silver nitrate and poly vinyl alcohol (PVA) mixture at different concentrations and different laser irradiations. Detailed studies were carried out by varying pulse width, wavelength, exposure time, a…
High-pressure phase transitions of polar and nonpolar molecular structures of cyanoacetylene (HC${}_{3}$N) are studied by using first-principles simulations at constant pressure. In both polar and nonpolar crystals, at pressure $\ensuremath{\sim}$20 GPa, the cyanoacetylene molecules are interconnected together and for…
Stokes parameters fully characterize the polarization state of light in an experimentally accessible manner. Photoelastic modulator (PEM) based Stokes polarimetry offers a very high sensitivity which is particularly suitable for the investigation of the magneto-optical properties of nanostructured magnetic materials.…
We, herein, report the antimicrobial properties of uncapped silver nanoparticles for a Gram positive model organism, Bacillus subtilis. Uncapped silver nanoparticles have been prepared using less-explored DC arc thermal plasma technique by considering its large scale generation capability. It is observed that the resu…
One-step joint synthesis of two iridium porphyrin complexes, a donor-acceptor SAT (sitting a top) complex μ-(5,10,15,20-tetraphenylporphine)-bis-chloroiridium(I) and the covalent complex (5,10,15,20-tetraphenylporphinato)chloroiridium(III) by the reaction of free porphyrin and chloroiridic acid (H 3 O) 2 IrCl 6 in boi…
A possibility of the first-order transition, as well as reentrant transitions, induced by an external magnetic field between the homeotropic phase and the hybrid homeotropically planar phase in a ferronematic liquid crystal (ferronematic) with bistable anchoring at the layer boundary is demonstrated in the framework o…