Materials Literature
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Purpose Plasma polymerization is a very promising technique to produce functional textile materials for any textile end uses as well as for high performance clothing. It can be possible to obtain highly cross-linked, pinhole free and very thin polymer films up to 1 μm thickness with unique physical and chemical proper…
By the electrochemical oxidation of 4,5-ethylenedioxy-4′-methyl-tetrathiafulvalene (MeEDO-TTF), six kinds of radical cation salts were prepared: three polymorphs of 2:1 ReO 4 − salts, 4:1 HCTMM 2− salt, and 5:2 salts with CoCl 4 2− and MnCl 4 2−, where HCTMM 2− denotes hexacyanotrimethylenemethanediide dianion. Among…
Purpose The use of organic phase change materials microcapsules (mPCM) has been gaining ground in technical textiles and clothing as a temperature regulating medium and hence a means of keeping the body at a comfortable temperature when wearing impermeable protective clothes. However, for such applications as fire fig…
For an iron-based high T c superconductor LaFeAsO 1- x F x , we construct a minimal model where all of the five Fe d bands turn out to be involved. We then investigate the origin of superconductivity with a five-band random-phase approximation by solving the Eliashberg equation. We conclude that the spin fluctuation m…
A compressible regular solution free energy model for describing the phase behavior of weakly interacting binary blends comprising nonrigid polymer nanoparticles and linear-polymer chains (i.e., all-polymer nanocomposites) has been developed by incorporating specific nanoparticle-nanoparticle and nanoparticle-polymer…
An Al(86)Mn(3)Be(11) alloy cast into copper mould was subjected to metallographic investigation. The as-cast microstructure consisted of a quasicrystalline icosahedral phase (i-phase), Be(4)AlMn phase and, occasionally, a hexagonal phase. Al-rich solid solution represented the dominant phase. The chemical compositions…
The electron-stimulated desorption of ${\text{O}}^{+}$ from atomic oxygen $({\text{O}}_{t})$ species on the ${\text{TiO}}_{2}(110)$ surface has been investigated. Adsorbed ${\text{O}}_{t}$ species, produced by ${\text{O}}_{2}$ dissociation, desorb as ${\text{O}}^{+}$ ions by hole production in the $\text{Ti}(3p)$ leve…
The normal state and superconducting properties are investigated in the phase diagram of K x Sr 1- x Fe 2 As 2 for 0⩽ x ⩽1. The ground state upper critical field, H c2 (0), is extrapolated from magnetic field-dependent resistivity measurements. H c2 (0) scales with the critical temperature, T c , of the superconductin…
The collective collisionless dynamics of the electron gas in free-electron nanofilms irradiated by an obliquely incident $p$-polarized laser wave are considered in the classical hydrodynamic and jellium-model approximations. The two cases of cold metallic nanofilms and hot free-electron nanofilms laser ionized and las…
Today, clothing factories have to strictly control their costs to survive and continue their success. Fabric cost constitutes about half of a garment cost. For this reason, it is important to calculate the fabric cost of a garment precisely. The study described in this paper aims to develop software that will calculat…
We have investigated orbital ordering in the bilayer manganite, $\text{Pr}{({\text{Sr}}_{0.1}{\text{Ca}}_{0.9})}_{2}{\text{Mn}}_{2}{\text{O}}_{7}$, using synchrotron x-ray diffraction techniques, in particular resonant soft x-ray diffraction. Diffraction signals are observed at $(0,\frac{1}{2},0)$ above 300 K and $(\f…
It is still unclear whether hyperquenched water (i.e., amorphous glassy water) heated to about 140-150 K remains glassy until it crystallizes near 154 K or whether instead it turns into a supercooled and very viscous liquid. It has been proposed that the glass transition temperature (T(g)) for water is 165 K and not,…
PurposeNickel–titanium arch wires have a prominent role in orthodontic appliances due to their desirable mechanical properties. The purpose of the present study is to determine the effects of autoclave and dry-heat sterilization on the bending properties of three types of NiTi superelastic wires.MethodsIn this experim…
Abstract AgScP2Se6, AgErP2Se6 and AgTmP2Se6 were obtained by high temperature reaction of stoichiometric amounts of the elements in evacuated silica ampoules. They crystallize in the space group P 1c, Z = 2 with the lattice constants a = 6.463(1) Å,c = 13.349(1) Å (AgScP2Se6), a = 6.578(1) Å, c = 13.410(2) Å (AgErP2Se…
The current-voltage (I-V) characteristics of single ZnO nanowires were measured varying with temperature and illumination. A model of the ZnO nanowire sandwiched by back-to-back diodes was utilized to explain the experimental data. Simulations of the I-V curves exhibited that the surface barrier height was independent…
Conventional antireflection coating by thin films of quarter-wavelength thickness is limited by material selections and these films’ refractive indices. The optimal design by non-quarter-wavelength thickness is presented in this study. A multilayer thin-film model is developed by the admittance loci to show that the t…
The electrical properties of Ca 0.33 CoO 2 epitaxial films are investigated as the Ca 2+ -arrangement is transformed. Despite identical Ca-content, annealing the film caused the Ca-arrangement to change from a √3 a × √3 a hexagonal type to a 2 a × √3 a orthorhombic type, which was confirmed by X-ray diffraction and sc…
Red upconversion (UC) emission at 626 nm is obtained from a LiNbO(3) crystal codoped with Er(3+) and Eu(3+) under 800 nm femtosecond laser excitation. Energy transfer from ((2)H(11/2,),(4) S(3/2)) levels of Er(3+), which are excited by excited state absorption, to (5)D(1) of Eu(3+) followed by rapidly relaxing to (5)D…
Thiolated dimeric tetramethylrhodamine (TAMRA) was synthesized in a straightforward procedure utilizing commercially available 5(6)-succinimidyl TAMRA and cystamine hydrochloride. The thiol-containing TAMRA dimer displayed distinct spectral properties in reduced and oxidized forms; covalent dimer formation produced gr…
Pd-cluster-functionalized carbon nanotubes (CNTs) have been shown experimentally to be effective hydrogen sensors. Semiconducting CNTs exhibit much higher sensitivity than ensemble (mixed) ones. Using the nonequilibrium Green's function method combined with the density-functional theory, we simulate and contrast the (…