Materials Literature
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We investigated electromagnetic wave propagation through one-dimensional stacks of alternating positive and negative refractive index layers arranged as truncated quasi-periodic (fractal) Cantor multilayers. We considered the occurrence of phase compensation in these structures. In our calculation we utilized the tran…
The charge of dots: A combination of fluorescence correlation spectroscopy and microchip electrophoresis has been used to determine the surface charge of different stabilizer-modified quantum dots (QDs) and to study their transport properties in electric fields (see graph; G(τ)=autocorrelation function). The surface c…
A dedicated spectrophotometer is built to achieve localized transmittance and reflectance measurements. The spatial resolution can be chosen from 100 microm to 2 mm, the spectral resolution from 0.5 to 5 nm, and the spectral range from 400 to 1700 nm. This apparatus can be used to study the index and thickness uniform…
Over the past 30 years, textile manufacturers have been facing heavy competition, and now they urgently need to know consumer perceptions and preferences whereby fabric quality can be controlled and new products can be developed. Sensory factors are the most important parameters in product quality assessment, and tact…
Polyester fibers are hydrophobic in nature; most of the successful preparations such as dyeing, printing, and finishing are based on wet treatments. The plasma treatments for polyester textile surfaces using low-pressure pseudo-discharge in nitrogen as a working gas are discussed in this work. Different plasma paramet…
Potassium (K) exchange isotherms (quantity-intensity technique, Q/I) and K values derived from the Q-I relationship provide information about soil K availability. This investigation was conducted to study the relationships among K Q/I parameters, available K extracted by 1 N NH4AOc (exchangeable K plus solution K), po…
Phase relations in the Ti-C-SiC system are studied with the aim of optimizing Ti 3 SiC 2 synthesis. The optimal starting-mixture compositions for the synthesis of phase-pure Ti 3 SiC 2 powder can be represented by the formula 3Ti + (1 − z )C + (1 + z )SiC, where z = 0.2–0.6. In the temperature range 1630–1670 K under…
Twisted-grain-boundary (TGB) phases shown by some liquid-crystalline materials have properties common to those of both smectic and cholesteric phases. Following analogy between liquid crystals and super conductors proposed by de Gennes [Solid State Commun., 10, 753 (1972)], Renn and Lubensky [Phys. Rev. A, 38, 2132 (1…
Abstract Summary: Germanium and tin phthalocyanines containing peripheral and axial different substituents were synthesized. Thin multi‐layer films of PMMA and PVC containing monomolecular phthalocyanines were obtained by spin‐coating on glass substrates. The phthalocyanines were characterized by their absorption spec…
NMR and dielectric studies have been performed on NaNO 2 loaded in mesoporous matrices of MCM-41 and SBA-15 with pore sizes of 20, 37, and 52 Å. The spin-lattice relaxation rate and 23 Na NMR line shape, as well as the complex impedance, were measured within a broad temperature interval including the ferroelectric pha…
The appearance of a garment is affected by the quality of the fabrics used in its manufacture, as well as a number of factors determined by the technology of the garment manufacturing process. Since fabric quality, as the most important element of garment appearance, is determined by its mechanical properties, it is o…
This article provides an overview of our recent studies on single-walled carbon nanotube-based sensors for measuring mass, strain, pressure, and temperature at the nanoscale. The carbon nanotube in a cantilevered or bridged configuration is simulated by an atomistic modeling, the molecular structural mechanics method.…
3-aminopyridine-2-carboxaldehyde thiosemicarbazone (3-AP) is a highly-hydrophobic small molecule that was originally developed for cancer therapy (Triapine, Vion Pharmaceuticals) due to its ability to inhibit ribonucleotide reductase, a key enzyme required for DNA synthesis. 3-AP has a high affinity for divalent catio…
The interaction of the glycine radical on the side walls of both armchair and zigzag single walled carbon nanotubes is investigated by density functional theory. It is found that the interaction potential of the N-centered glycine radical with the tubes has a minimum of 16.9 (armchair) and 20.2 (zigzag) kcal/mol with…
We report a theoretical study of heat conduction across metal-dielectric interfaces in devices and structures of practical interest. At cryogenic temperatures, the thermal interface resistance between electrodes and a substrate is responsible for substantial reduction in the maximum permissible peak power in Josephson…
The rich nanostructural diversity of commecial zinc oxide, fabricated via French process, is investigated. FESEM images of ZnO nanostructures reveal nanorods, nanoplates, nanoboxes, nanomallets, microclusters, polyhedral drums and irregularly‐shaped particles (ISPs). Due to nanoscopic inhomogeneity in crystallisation…
Large single crystals of cesium-nickel sulfate hexahydrate Cs 2 Ni(SO 4 ) 2 · 6H 2 O of optical quality were grown for the first time. The crystal structure and the optical and thermogravimetric properties of this compound were investigated.
One motivation for synthesizing nanofibrous materials is the desire to mimic interactions between cells and the natural extracellular matrix. The cellular response to nanofibre assemblies of differing length-scales and densities of nanofibres is of direct interest; in this study, we investigate the response of human l…
Purpose To study the effects of the sodium salts of molybdate, tungstate and monovanadate as well as some derivatives of Neville‐Winter acid azo dyes on the corrosion of carbon steel in 3.5 percent NaCl solution. Design/methodology/approach Open circuit potential measurement and potentiostatic polarization techniques…
Fabric appearance is very essential for characterizing and determining the acceptability of textile products. Drape, pilling, texture and wrinkle are recognized as major aesthetic attributes of a woven apparel fabric and measured by the digital image processing technique. An integrated appearance index is estimated fr…