Materials Literature
按标题、摘要、年份、主题和来源检索公开元数据。结果保留作者、摘要、分类与原始来源链接。
Functionalization of an inorganic nanomaterial like carbon nanotube (CNT) with biological macromolecules like deoxyribonucleic acid (DNA) leads to the formation of hybrid materials with fascinating properties. This article describes the structures of CNT and DNA, portrays the van der Waals force-dominant non-covalent…
Using the spin-polarized density functional theory, we have demonstrated the electronic structure of graphene antidot lattices (GALs). It is found that due to the symmetry broken of α, β atomic sublattices, GALs behave semiconducting in general. And the triangular GALs present some electronic localized states around t…
Abstract A continuous and scalable wettability gradient of water contact angle (WCA) (20–135°) were successfully prepared on poly(propylene) film by applying O 2 plasma for pretreatment followed by SF 6 plasma treatment under a specially designed mask. Moreover, the role of mass transfer processes in the plasma treatm…
Abstract Cast films of two linear polypropylenes (PP) having different molecular weights and their blends with 20 wt% random copolymer were prepared by extrusion. The produced cast films were then uniaxially hot drawn at T = 110 and 140°C under a draw ratio (DR) of 6 using a machine direction orientation (MDO) unit. T…
In contrast with the simultaneous structural and magnetic first order phase transition ${T}_{0}$ previously reported, our detailed investigation on an underdoped ${\mathrm{Ba}}_{0.84}{\mathrm{K}}_{0.16}{\mathrm{Fe}}_{2}{\mathrm{As}}_{2}$ single crystal unambiguously revealed that the transitions are not concomitant. T…
We demonstrate light-induced switching of the coercive field of true nano-stabilized Au:Fe nanoparticles with exceptionally good magneto-optical response. Two separate processes are identified, both exploitable for photocommutation. This innovative material allows combining appealing photoswitching properties with the…
Plasmon hybridization theory (PHT) is an analytical model developed for understanding plasmonic interactions within complex metallic nanostructures, and gives a useful insight for optimizing design parameters. However, this theory is based on the electrostatic limit, which restricts the model to nanostructures much sm…
Semiconducting networks were found to be extremely sensitive to charges, which promises the electrical detection of ultralow concentrations of DNA (down to 0.1 fM, ∼100 DNA molecules).
Thirty π-electron-expanded hemiporphyrazines 1a-c have been prepared by crossover condensation reaction of 2,5-diamino-1,3,4-thiadiazole and the corresponding phthalonitrile (3) or diiminoisoindoline (4) derivatives. The expanded azaporphyrin hexamers have been unequivocally characterized by means of spectroscopic, cr…
An electron diffraction technique called D-STEM has been developed in a transmission electron microscopy/scanning transmission electron microscopy (TEM/STEM) instrument to obtain spot electron diffraction patterns from nanostructures, as small as ∼3 nm. The electron ray path achieved by configuring the pre- and postsp…
Use of silver nanoparticles (SNPs) for control of implant-associated infection is a promising strategy, if optimum antimicrobial yet nontoxic dose to mammalian cells is identified. This study was done to determine essential quantity of SNPs, which stimulate antimicrobial activity without cytotoxicity, when immobilized…
In this study, structural, physical and mechanical properties of cotton-Tencel and cotton-Promodal blended ring, compact and vortex spun yarns were compared. Yarn properties such as hairiness, unevenness, imperfections, diameter, density, roughness, roundness, breaking force and elongation were evaluated. In general,…
This Feature Article provides an overview of the distinctive nanostructures that aniline oligomers form and the applications of these oligomers for shaping the nanoscale morphologies and chirality of conducting polymers. We focus on the synthetic methods for achieving such goals and highlight the underlying mechanisms…
Single crystalline CeO2 powder was prepared by precipitation-hydrothermal technique. The hydrothermal treatment temperature and time were the two parameters chosen to observe their effect on nature of ceria. The synthesized samples were characterized for structural, optical, and electrical properties using X-ray diffr…
The role of electrons and holes in the electronically excited oxidation of adsorbed CO on TiO(2)(110) has been investigated by tuning the surface electron and hole availability by the adsorption of Cl(2) or O(2). The presence of an electron acceptor (Cl(2) or O(2)) on the TiO(2)(110) surface causes upward band bending…
Porous, tubular, flexible, and elastic poly(trimethylene carbonate) (PTMC) scaffolds (length 8 cm and inner diameter 3 mm) for vascular tissue engineering were prepared by means of a dip-coating and particulate leaching procedure. Using NaCl as porogen, scaffolds with an average pore size of 110 μm and a porosity of 8…
Single crystal and powder samples of the series of iron chalcogenide superconductors with nominal composition, Fe((1.15))Te((1-)y)S(y), are found to form for 0 ≤ y ≤ 0.15. They crystallize in the tetragonal anti-PbO structure, which is composed of layers of edge-shared Fe(Te, S)(4) tetrahedra. For y = 0, Fe(1+x)Te (x…
Localized carbon dioxide (CO2) corrosion is the most dangerous type of internal corrosion to mild steel pipelines in the oil and gas industry since the penetration rate of localized corrosion can be one or more magnitudes higher than that of uniform corrosion. In this study, the focus is on propagation of localized CO…
The aim of this article is to review current knowledge related to the synthesis and characterization of sol gel-derived SBA-16 mesoporous silicas, as well as a review of the state of the art in this issue, to take stock of knowledge about current and future applications. The ease of the method of preparation, the orde…
RATIONALE AND OBJECTIVES: The donor atoms that bind to gadolinium in contrast agents influence inner-sphere water exchange and electronic relaxation, both of which determine observed relaxivity. The effect of these molecular parameters on relaxivity is greatest when the contrast agent is protein bound. We sought to de…