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 mechanical properties and microstructural characteristics of a precipitation hardenable Al 7075 alloy subjected to rolling at liquid nitrogen temperature and room temperature are reported in this present work. The Al 7075 alloy was severely rolled at cryogenic temperature and room temperature and its mechanical pr…
We have studied the variation of magnetic and magnetocaloric properties of polycrystalline compounds ${\text{SmMn}}_{2}{\text{Ge}}_{2}$ and ${\text{GdMn}}_{2}{\text{Ge}}_{2}$ as a function of applied hydrostatic pressure. The magnetic transition temperatures are found to change considerably with pressure. The temperat…
The reaction of ethylenediamine solutions of 4,4'-bipyridine with varying stoichiometric amounts of sodium resulted in the isolation of the 4,4'-bipyridyl radical anion (44bipy(*-)) and the unprecedented 4,4'-bipyridyl dianion (44bipy(2-)). The radical was characterized by single-crystal X-ray diffraction in Na(44bipy…
The microstructures of pure Cu processed by equal channel angular pressing (ECAP) from 4 to 24 passes were investigated. It was found that the microstructures of Cu samples with a small number of ECAP passes (4-8) were not inhomogeneous and the fraction of high-angle grain boundary (HAGB) was low (25~43%). While for t…
Martensitic transformations in NiTi shape memory alloys (SMAs) strongly depend on the microstructure. In the present work, we investigate how martensitic transformations are affected by various types of ultra-fine grained (UFG) microstructures resulting from various processing routes. NiTi SMAs with UFG microstructure…
Abstract Atomic force microscopy characterization has been conducted to reveal the morphological difference between single‐ring bands in poly(butylene adipate) (PBA). Furthermore, morphological features of the ring‐less Maltese‐cross spherulites are compared to the ring‐band spherulites. Periodic changes in height see…
Numerical results are presented for hydrodynamic instabilities surrounding the parameter space of sonoluminescing bubbles. The Rayleigh-Taylor instability is shown to limit bubble oscillations only in a small region near a border at small radii in noisy environments. Also, two different noise-induced instabilities by…
Abstract Hybrid nanoarchitecture of tailor‐made Poly(ethyl acrylate)/clay was prepared by surface‐initiated atom transfer radical polymerization (SI‐ATRP), by tethering ATRP initiator on active hydroxyl group, present in surface as well as in the organic modifier of the clay used. Extensive exfoliation was facilitated…
Perovskite pure BaTiO 3 (BT) nanoparticles with spherical morphology and PX‐phase PbTiO 3 (PT) nanowires with acicular morphology, were synthesized by microwave–hydrothermal process, and their atomic‐scale microstructures were characterized by electron microscopy. Both X‐ray diffraction (XRD) and selected area electro…
A Ru/Al 2 O 3 /cordierite monolithic catalyst was prepared, characterized, and examined in selective hydrogenation of benzene to cyclohexene in a monolithic fixed-bed reactor with an aqueous solution of ZnSO 4 . The Carberry number and Wheeler−Weisz group were calculated to analyze the effects of external and internal…
The structures of the (100), octopolar (111) Na-terminated [(111) Na ], and (111) Cl-terminated [(111) Cl ] surfaces of halite (NaCl) were determined by means of ab initio quantum mechanical calculations (density functional theory, DFT). The (111) surfaces show higher surface relaxation with respect to the (100) surfa…
Silicon oxide barrier layers are deposited on polyethylene terephthalate as permeation barriers for food packaging applications by means of a low pressure microwave plasma. Hexamethyldisiloxane (HMDSO) and oxygen are used as process gases to deposit SiO x coatings via pulsed low pressure plasmas. The layer composition…
An aqueous method for the deposition of silver indium sulfide ternary semiconductor thin films is presented. According to grazing-incidence X-ray diffraction studies, a single phase of AgInS 2 with orthorhombic structure or a single phase of AgIn 5 S 8 with cubic spinel structure can be selectively grown on 3-mercapto…
Linearly pi-expanded novel tetraanthroporphyrins with and without aromatic rings at the meso-positions were prepared quantitatively for the first time from the corresponding precursors by a retro-Diels-Alder reaction.
The Au-O and Au-S interactions are essential in nanogold catalysis and nanotechnology, for which monogold oxide and sulfide clusters serve as the simplest molecular models. We report a combined photoelectron spectroscopy and ab initio study on AuO (-) and AuO 2 (-) and their valent isoelectronic AuS (-) and AuS 2 (-)…
ZnO nanorod/microrod arrays with controllable surface distribution densities were successfully synthesized on glass substrates via a low-temperature template-assisted aqueous solution growth method. The influences of the pH of the solution on the formation and continuing growth of ZnO crystals were studied. It was fou…
Controlling the size of silica nanoparticles (NPs) on a continuously variable scale was achieved by systematically varying the organic solvent(s) used in water-in-oil microemulsion synthesis. A number of individual as well as binary solvent mixtures were investigated for tuning silica NP size. The results demonstrated…
The metal-insulator transition is characterized as a single peak in the temperature-dependent resistivity measurements; exceptions to this have never been seen in any single crystal material system. We show that by reducing a single crystal manganite thin film to a wire with a width comparable to the mesoscopic phase-…
A novel method for controlling nanowire magnetic properties and growth from filling time profile is presented. The wires are grown with an electrodeposition method ("Template synthesis") with a wide selection of pore diameters. We show that stray-fields presence in ferromagnetic nanowires are entirely dependent on the…
We present the design, fabrication, and measurement of a dual-band planar metamaterial with two distinct electric resonances at 1.0 and 1.2 THz, as a step towards the development of frequency agile or broadband THz materials and devices. A method of defining the effective thickness of the metamaterial layer is introdu…