Materials Literature
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The paper presents and compares three potential formulations to solve nonlinear static magnetic field problems by applying the fixed point technique and the Newton-Raphson scheme. Nonlinear characteristics are handled by the polarization method in both algorithms. The proposed combination of the Newton-Raphson scheme…
Abstract Flexible polyurethane foams are widely used in cushioning and packaging applications. A model for the dynamics of formation of polyurethane foams is presented, which includes thinning of foam lamellae. Experimental measurements for water blown flexible foam formulations at different water concentrations are p…
The aim of this study was to develop a prosthetic graft that could perform as a small-diameter vascular conduit for vein regeneration. The difficulty of obtaining significant long-term patency and good wall mechanical strength in vivo has been a significant obstacle in achieving small-diameter vein prostheses. Fifteen…
All textile materials, having periodic surfaces, show horizontal and vertical repetitive unities. For this reason, different length scales have to be taken into account by interpreting topographic data measured. In this study, a topographical characterization method for textile materials at different length scales is…
For applications such as solar cells and displays, transparent single-crystal Si membranes were fabricated on a silicon-on-insulator (SOI) wafer. The SOI wafer included a buried layer of SiO2 and Si3N4 as an etch-stop layer. The etch-stop layer enabled fabrication of transparent single-crystal Si membranes with variou…
ABSTRACT Collagen was extracted from the digestive tract and skin of a Japanese amberjack (Seriola quinqueradiata) by acid extraction and limited pepsin digestion. The amounts of collagen solubilized from the digestive tract were smaller than those from the skin. Based on the solubility in NaCl solution, electrophoret…
Abstract Application of voltage during aging tests caused interstitial zinc ions to migrate in the depletion layer and to accumulate on the Schottky barrier, while oxygen ions were evaporated from the layer. Electrons were trapped on the Schottky barrier by the evaporation of the ions, keeping the electric charge neut…
The reliable integration of nanoporous low dielectric constant$(k)$materials is challenging due to their vulnerability to delamination, cohesive cracking, and diffusion. We review selected reliability issues for the integration of nanoporous low-$k$dielectrics regarding UV curing, diffusion, and damage evolution. Dept…
We report on variable-temperature STM investigations of the spontaneous long-range magnetic order of Mn monolayer nanostructures epitaxially grown on stepped W(110). The measurements reveal that the onset of the antiferromagnetic order is closely related to the Mn nanostructure width along the [001] direction, with a…
The optical absorption spectrum for light with electric field perpendicular to a bilayer graphene is shown to be quite different from that for parallel polarization. This arises partly from the difference in the selection rule and from the important depolarization effect due to induced polarization. The depolarization…
The concentration of polymorphs was explored by the ultrasonic measuring technique during crystallization in solution. The polymorphic form of the crystallized solid, the concentration of the solution, and the transformation of polymorphs were found by the ultrasonic measuring technique. The ultrasonic velocity calibr…
Several series of novel banana-shaped H-bonded symmetric trimers (with two H-bonds) and asymmetric heterodimers (with one H-bond) were self-assembled by appropriate molar ratios of proton donors (H-donors) and acceptors (H-acceptors). The influences of H-bonded linking positions and aromatic ring numbers (4-8 aromatic…
Composite material usage is necessary on NASA’s future launch vehicles in order to obtain a low mass vehicle. While aircraft and launch vehicles that utilize load-bearing composite components have many similar damage tolerance requirements, the distinct differences between a part that has a lifetime of ∼500 s (one lau…
In this study, a three-dimensional (3D) model of a yarn pullout test for plain woven fabrics is introduced. The main focus of the study is on the realization of a 3D fabric geometrical model, the incorporation of anisotropic material properties and the validation of yarn and fabric finite element meso-models using exp…
Triton X-45 was used as a sacrificial template to synthesize macroporous Ag, Au, or CuO monoliths via thermal treatment. Continuous networks of pores with sizes varied from 100 nm to 6 μm can be prepared through the use of additives such as dextran, silica nanoparticles, and the swelling agent, 1,3,5 trimethylbenzene…
Carboxylic acid groups in PAH/PAA-based multilayers bind silver cations by ion exchange with the acid protons. The aggregation and spatial distribution of the nanoparticles proved to be dependent on the process used to reduce the silver acetate aqueous solution. The reducing method with ambient light formed larger nan…
Photolysis of dihydroxy compounds (diols) protected as 2-nitrobenzylidene acetals (ONBA) and subsequent acid- or base-catalyzed hydrolysis of the 2-nitrosobenzoic acid ester intermediates result in an efficient and high-yielding release of the substrates. We investigated the scope and limitations of ONBA photochemistr…
A new TMTTF (tetramethyl-tetrathia-fulvalene)-family salt, (TMTTF) 2 TaF 6 , which has the largest octahedral ( O h ) symmetry counter anion among the various salts in the TMTTF family, was prepared. X-ray, static magnetic susceptibility, electron spin resonance (ESR) and nuclear magnetic resonance (NMR) measurements…
In this paper, the effect of interface on the orientation of the film of two derivatives of tetra-substituted nickel phthalocyanines NiPcR 4 -1 (R = −OCH(CH 2 OC 12 H 25 ) 2 ) and NiPcR 4 -2 (R = −SCH(CH 2 (OCH 2 CH 2 ) 2 OC 2 H 5 ) 2 ) deposited on one substrate and between two identical substrates is studied by the…
Poly(p-phenylene) (PPP) was chemically synthesized via oxidative polymerization using benzene and doped with FeCl(3). The electrical conductivity response of the doped PPP (dPPP) towards CO, H(2) and NH(3) is investigated. dPPP shows no electrical conductivity response towards the first two gases (CO and H(2)), but it…