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。
The effective hydrogen diffusivity in aluminum alloy (AA)5083- H131 (UNS A95083) for various orientations and degrees of sensitization (DoS) was investigated using AA5083/Pd bilayer membranes. Sensitization produced β-phase (Al3Mg2) precipitates. A modified Devanathan-Stachurski permeation method was used with hydroge…
Nanostructured MnBi ribbons doped with impurity elements including B, C, Fe, Hf, Sm and Tb were prepared using the arc melting and melt-spinning techniques. The melt-spun ribbons were annealed in vacuum furnace at 350°C to obtain the intended hexagonal structure. The external impurity doping made a significant change…
A technique with a relatively high spatial resolution is required for an effective analysis of the microstructure of ceramic materials. The recently developed electron backscatter diffraction (EBSD) technique, which works within a scanning electron microscope, enables a spatially highly resolved study of crystallograp…
The catalysts of silver supported on mesoporous silica modified with Co 3 O 4 , CeO 2 , and ZrO 2 were prepared by an impregnation method; characterized by X-ray diffraction analysis, temperature-programmed reduction, and low-temperature nitrogen adsorption; and studied in a model reaction of CO oxidation. It was foun…
This study presents the structural and magnetic properties of melt-spun HfCo7,HfCo7-xFex(0.25 ≤ × ≤ 1) and HfCo7Six(0.2 ≤ × ≤1.2) alloys. Appreciable permanent-magnet properties with a magnetocrystalline anisotropy of about 9.6-16.5 Mergs/cm3, a magnetic polarization Js≈ 7.2-10.6 kG, and coercivities Hc= 0.5-3.0 kOe w…
We present the fabrication of a multifunctional, hybrid organic-inorganic micropatterned device, which is capable to act as a stable photosensor and, at the same time, displaying inherent superhydrophobic self-cleaning wetting characteristics. In this framework several arrays of epoxy photoresist square micropillars h…
The article highlights the synthesis, properties and recent advances in therapeutic possibilities of metallic nanoparticles. Nanometallic structures that behave as drug-carrying agents, gene regulators, imaging agents and photoresponsive assemblies have been discussed in the context of cells and many debilitating dise…
Controlled drug delivery system is a protocol to develop nanostructures and materials that can efficiently encapsulate drugs at high concentration, cross the cell membrane, and release the drug at the target site in a controlled manner for a prescribed period of time. This system can reduces the patient expenses, and…
We describe highly unconventional situations in which the polymer chain ends remain trapped in and are located in the middle of the lamellar crystal core as defects. Such structures are observed in giant molecular shape amphiphiles constructed by a polyhedral silsesquioxane (POSS) nanoparticle tethered with a poly(eth…
This review analyzes the present-day problems and expansion pathways of engineered nanomaterials in the environment, particularly in soils and related habitats (water and air). The sources of unintentional and intentional nanoparticle entry (NP entry) into natural systems are discussed. Attention is focused on the pro…
We propose a model of an equivalent electrical circuit specifically designed for a ferrite inductor excited by a nonsinusoidal waveform valid for use in an electronic circuit simulator. We estimate the model parameters by means of Finite Elements in 2-D which leads to significant computational advantages over the 3-D…
Nanotechnology is one of the rapidly growing scientific disciplines due to its enormous potential in creating novel materials that have advanced applications. Electrospinning has been found to be a viable technique to produce materials in nanofiber form. Ferroelectric and/or piezoelectric materials in nanofiber and/or…
This study focuses on elucidating the bond breaking steps involved in the electron beam induced deposition (EBID) of nanostructures created from the organometallic precursor cobalt tricarbonyl nitrosyl (Co(CO) 3 NO) by studying the effect of 500 eV incident electrons on nanometer scale films of Co(CO) 3 NO. Experiment…
Transparent conductive Al doped ZnO thin films were deposited by ultrasonic spray technique. Conditions of preparation have been optimized to get good quality. A set of aluminum (Al) doped ZnO (between 0 and 5 wt%) thin films were grown on glass substrate at 350 °C. Nanocrystalline films with a hexagonal wurtzite stru…
The chemical reduction of exfoliated graphene oxide (GO) has gained widespread acceptance as a scalable route for the preparation of chemically derived graphene albeit with remnant topological defects and residual functional groups that preclude realization of the conductance of single-layered graphene. Reduction of G…
Regulatory approval of new drugs, including subsequent new indications, requires that they have undergone preclinical and clinical testing which focuses on safety and efficacy. For contrast media these tests have never included pregnant and lactating women to investigate possible effects on the fetus and neonate. The…
Raman spectra of camphor soot has been investigated and optimised with a Raman microscope system operated at laser excitation wavelength of 514.5 nm. Several band combinations for spectral analysis have been tested, and a combination of three Lorentian bands ( G,D1,D2) at about 1580, 1350 and 1620 cm-1, respectively,…
By exploiting the highly chromatic behavior of semiconductor structures with mesoscopic dimensions only slightly smaller than the wavelength, efficient diffraction is maintained over almost one octave.
Conventional optical components rely on the propagation effect to control the phase and polarization of light beams. One can instead exploit abrupt phase and polarization changes associated with scattered light from optical resonators to control light propagation. In this talk, we discuss the optical responses of anis…
The influence of the concentration of adenine (AD) on the corrosion of 304 austenic stainless steel in chloride acid solutions was studied. The investigations involved electrochemical polarization methods, scanning electron microscopy (SEM) and quantum chemical calculations method. Tafel polarization study revealed th…