Materials Literature
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Graphene nanohole arrays (GNAs) were fabricated using nanoimprint lithography. The improved optical transmittance of GNAs is primarily due to the reduced surface coverage of graphene from the nanohole fabrication. Importantly, the exposed edges of the nanoholes provided effective sites for chemical doping using thiony…
In this study, ZnO-loaded PA6 nanocomposite preparation and its antibacterial activity are investigated. This work aims to study the effect of the sizes and amount of the ZnO nanofiller on the antibacterial, mechanical, and thermal properties of the PA6/ZnO nanocomposites. The melt intercalation method is applied to p…
A procedure is described for preparing polyamide-6 (PA-6) reinforced with cellulose nanofibres. The cellulose nanofibres were obtained from flax and microcrystalline cellulose (MCC) using combinations of acid hydrolysis, ball milling and ultrasound, then characterised by transmission electron microscopy (TEM) in order…
The moisture transfer and absorption properties of fabrics play an important role in the evaluation of the overall wear comfort of the textile. The location of moisture in the textile influences the skin wetness as well as the skin/textile friction process. In this study, we used X-ray tomography to analyze the transp…
Mesoscale ordering of a Zr-bearing aluminosilicate glass is determined using high-angle annular dark field scanning transmission microscopy, corrected from aberration. This method reveals evidences for the presence of nanometer-size inhomogeneities in a macroscopically isotropic glass, with regions enriched in Zr. The…
The investigation of hydrophobic interactions under confined conditions is of tremendous interdisciplinary interest. It is shown that based on porous capsules of the type {(pentagon)}(12){(linker)}(30) ≡ {(Mo)Mo(5)(12){Mo(2)(ligand)}(30), which exhibit different hydrophobic interiors-achieved by coordinating related l…
Incorporation of a pH-sensitive conformational switch into a lipid structure enables a drastic conformational flip upon protonation that disrupts the liposome membrane and causes rapid release of cargo specifically in areas of increased acidity. pH-sensitive liposomes containing the amphiphile (1) with trans-2-morphol…
Abstract This article describes the results of an investigation on the influence of titania nanoparticles on the morphology and properties of vulcanized natural rubber (NR)/ethylene‐propylene‐diene monomer (EPDM) blends. The samples were prepared through roll‐milling and melt‐pressing and diphenyl guianidine was used…
In the present work we report the desorption pathway of the 2NaBH 4 + MgH 2 system. Ex-situ X-ray powder diffraction (XRPD) and solid state magic angle spinning (MAS) nuclear magnetic resonance (NMR) measurements have been performed on samples heat treated up to 450 °C for different times. Ex-situ X-ray powder diffrac…
We describe the bimodal quantitative assay for enzymatic activity in (19)F NMR spectroscopy and fluorescence spectroscopy using a nanoparticle-based molecular probe. Perfluorinated dendrimers were tethered on silica nanoparticles with a phosphate-caged fluorescein as a linker. Before enzymatic reaction, the molecular…
Colloidal CdSe quantum dots (QDs), whose surface traps are controlled with the purification process, are measured with a Z-scan technique using an 80 femtosecond pulse duration laser source. Their two-photon absorption coefficient and refractive index are decreased more than one order of magnitude with the increase of…
Abstract There is growing interest in the incorporation of nanoparticles into engineering polymers to improve various functional properties. However, ultimate properties of nanocomposites are affected by a large number of factors including the microstructural distributions that are generated during processing. In this…
Abstract Electrospinning of the biodegradable polylactide (PLA) and its composites containing carbon nanotubes (CNTs) was studied in terms of solution concentrations and solvents effects as well as CNT loadings. The results reveal that the PLA fibers obtained from the solutions using the mixed solvents of chloroform/a…
Switching of the symmetry of magnetic anisotropy is clearly demonstrated in an epitaxial Fe layer on BaTiO3, in association with the interface lattice distortion occurred at the structural phase transition of BaTiO3. The polar plot of the normalized remanent magnetization shows the fourfold symmetry with the magnetiza…
Despite their great diversities, 2D-shaped macrocycles that can serve as the organogelators have been surprisingly rare; two planar macrocyclic fluoropentamers designed by us were highly able to gelate organic solvents, largely derived from their strong tendency to form 1D stacked fibrillar structures stabilized by bo…
We demonstrate a device concept to fabricate resistance standards made of quantum Hall series arrays by using p-type and n-type graphene. The ambipolar nature of graphene allows fabricating series quantum Hall resistors without complex multi-layer metal interconnect technology, which is required when using conventiona…
Simple as that: A novel crystalline microporous titanosilicate (Ti-COE-4) with functionalized hydroxyl groups and medium micropore size (0.55 nm) is successfully synthesized through dimethylsilylation and calcination. The synergism of hydroxyl groups with active Ti sites in Ti-COE-4 significantly improves its catalyti…
Abstract High porosity permeable materials have been manufactured on the basis of the highly uniform structure of foamed polyurethane since the 1950 s. This paper shows the development of open cell foams based on all kinds of steels, titanium alloys, and also open‐cell molybdenum foams made by a powder metallurgical r…
The site preference and elastic properties of Fe-, Co-, and Cu-doped Ni${}_{2}$MnGa alloys are investigated by using the first-principles exact muffin-tin orbital method in combination with coherent-potential approximation. It is shown that Fe atom prefers to occupy the Mn and Ni sublattices even in Ga-deficient alloy…
To understand the impact of environmental deposition of CuO and ZnO nanoparticles (NPs) on the production of bacterial metabolites, we examined the effects of their sub-lethal levels on the production of a pyoverdine (PVD) siderophore in a plant-beneficial bacterium, Pseudomonas chlororaphis O6 (PcO6). The NPs were ch…