Materials Literature
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L-arginine acetate (LAA) single crystal is an interesting nonlinear optical and dielectric material. In order to understand the effect of some impurities (both inorganic and organic) on the electrical properties of LAA, we have grown from aqueous solutions pure and impurity (NaC/KCl/glycine/urea) added single crystals…
This work is devoted to experimental study of the effect of manganese concentration on thermoluminescent properties of YAlO3:Mn crystals grown by the Czochralski method. A new type of emitting centers beside of Mn 4+ and Mn 2+ ions was revealed at low concentration of manganese ions in the crystal. These centers are r…
アルカリ環境での鋼中の水素侵入挙動について，水素量と水素過電圧の観点から水素透過試験法および昇温脱離法にて調査した．NaOH溶液およびCa(OH)2溶液ともに水素透過電流密度は印加電流密度の1/2乗に比例した．また，NaOH溶液よりもCa(OH)2溶液での水素侵入量が大きかった．これらの結果は，LillardとScullyによる実験結果と一致した．アルカリ環境にて鋼中に水素が侵入できる臨界の水素過電圧は0.05 Vであった．本浸漬試験環境における最も卑な電位は－0.6 V（SCE）であり，この環境では鋼中に水素は侵入しなかった．アルカリ環境でも酸性および中性環境と同じように，水素透過係数の対数と水素過電圧の間には直線関係が成り立つ…
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Abstract—Planar waveguides with an isotropic chiral core, called chirowaveguides, support the propagation of elliptically polarized modes, making them natural candidates for chiral sensing. We investigate the potential of chirowaveguides as optical sensors responding to changes in the circular birefringence of a mediu…
This paper presents a new unequally spaced and excited resonant slotted-waveguide antenna array.It is realized by employing an improved resonant-slot coupled cavity chain composite right/lefthanded (CRLH) waveguide.As the CRLH waveguide works at the infinite wavelength frequency, all the slot elements along the wavegu…
We have investigated alternative adhesives based on some oligomers that have structural units similar to lignins. The favorable interactions for a set of synthetic oligolignols were determined through a computational docking scheme, considering their conformational changes to adapt themselves on the surface of a three…
A series of some new pyridone arylazo dyes was synthesized from the corresponding diazonium salts and 4,6-diphenyl-3-cyano-2-pyridone using the classical reaction for the synthesis of the azo compounds. The structures of these dyes were confirmed by UV-vis, FTIR and 1H-NMR spectroscopic techniques. The solvatochromism…
We have investigated the thermal endurance and electrical insulating properties and mechanical properties of PDMS-based hybrid materials made from ethoxy-terminated PDMS and various metal alkoxides for application as electrical insulating encapsulants. The materials exhibited good thermal stability and good electrical…
Woven and nonwoven fabrics and the corresponding fibers have been analyzed using a Wilhelmy microbalance. A self-developed analysis software (written using Labview flow-data language) has been used to extract the advancing and receding angles and also other informations commonly neglected by the standard data analysis…
The effect of chain length on the helix orientation of α-helical diblock copolypeptides in Langmuir and Langmuir–Blodgett monolayers is reported for the first time. Amphiphilic diblock copolypeptides (PLGA-b-PMLGSLGs) of poly(α-L-glutamic acid) (PLGA) and poly(γ-methyl-L-glutamate-ran-γ-stearyl-L-glutamate) with 30 mo…
Ceramics will be widely used for enhancing the efficiency of power generating systems, particularly gas turbines. However, ceramics used in these systems suffer damage owing to impact by foreign objects. In this study, various ceramic plates are impacted by a spherical projectile with an impact velocity of 320 m/s. Th…
Coupled electrical-thermal and thermo-elastic-plastic analysis were performed to analyze the transient thermal and mechanical behaviors of resistance spot welding (RSW) process of the mild steel sheet metals with unequal thickness. The thermal histories of the whole process and temperature distributions in the sheet m…
The systematic investigation of the role played by electrons and holes during the erase operation of TANOS memories by means of charge separation experiments and physics-based simulations is reported for the first time. We determined a dominance of electrons back-tunneling in the first part of the transient, and domin…
Non-covalent interactions between cationic gold nanoparticles and an anionic coiled-coil peptide were harnessed for coiled-coil mediated self-assembly of gold nanoparticles (GNPs).
The stretching, bending, and torsional force-field parameters for modelling Si (111) surfaces functionalized with alkylamines have been derived from energies, optimized geometries and harmonic frequencies obtained by accurate quantum mechanical calculations. Addition of inter-chain non-bonded parameters from a literat…
Pt/mixed and reactive insulator/AlGaN metal−insulator−semiconductor (MIS)-type hydrogen sensors were fabricated using a photoelectrochemical oxidation method to directly oxidize AlGaN employed for increasing the sensor response to hydrogen gas. When hydrogen gas was sensed, the MIS hydrogen sensors exhibited a larger…
Co epitaxial thin films were prepared on MgO substrates of (100), (110), and (111) planes by molecular beam epitaxy. The growth process, the film structure, and the magnetic properties were investigated. The nucleation of Co crystal on MgO substrate varies depending on the substrate orientation and the substrate tempe…
In this work the complex permittivity and microwave absorption of toxins/sewage gases and functionalized single-walled carbon nanotube sensors in a perturbed microwave resonant cavity are studied with the aid of a kinetic model. The results show that the real permittivity decreases and the imaginary permittivity incre…
The CaBe2Ge2-type antimonide EuPd2Sb2 (P4/nmm, a = 462.43(7), c = 1056.1(2) pm) was synthesized by induction melting of the elements in a sealed tantalum tube. Temperature-dependent magnetic susceptibility measurements have revealed Curie-Weiss behavior with an experimental magnetic moment of 7.93(1) μB/Eu atom, indic…