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。
Graphene based two-dimensional carbon nanostructures serve as a support to disperse catalyst nanoparticles. Reduced graphene oxide is used as a support to anchor semiconductor and metal nanoparticles. Such a design strategy would enable the development of a multifunctional catalyst mat. This Perspective focuses on the…
We use real-time reflection high energy electron diffraction intensity oscillation to establish the Te-rich growth dynamics of topological insulator thin films of Bi2Te3 on Si(111) substrate by molecular beam epitaxy. In situ angle resolved photoemission spectroscopy (ARPES), scanning tunneling microscopy and ex situ…
Abstract Mesoporous nickel oxide is synthesized by a novel method by calcining a nickel–organic coordination complex precursor in this work. The prepared NiO has a uniform pore distribution evidenced by TEM and N2 adsorption–desorption tests. The NiO electrode presents a high specific capacitance of 143 F g−1, excelle…
Abstract A two-dimensional network compound, [{Mn(saltmen)}4{Co(CN)6}](ClO4)·9H2O (2) (saltmen2− = N,N′-(1,1,2,2-tetramethylethylene)bis(salicylideneiminate)), was synthesized. Magnetic measurements characterized the [Mn2(saltmen)2]2+ subunit as a single-molecule magnet with an ST = 4 spin ground state, indicating tha…
A hybrid technique for the selective growth of ZnO nanorod arrays on wanted areas of thin cover glass substrates was developed without the use of seed layer of ZnO. This method utilizes electron-beam lithography for pattern transfer on seedless substrate, followed by solution method for the bottom-up growth of ZnO nan…
The repair of bone defects can be induced experimentally with bone morphogenetic protein-2 (BMP-2) producing fat-derived stem cells, but this ex vivo tissue engineering method requires the isolation and long-term culture of autologous cells. To develop an expedited bone repair strategy, we transferred BMP-2 cDNA direc…
The symmetry breaking inevitably present in the vicinity of any surface, namely an inversion center disappears in surface normal direction and only axes and planes normal to the surface conserve, gives rise to the spontaneous piezomagnetic, piezoelectric and magnetoelectric effects in nanosystems, while the effects ca…
The shortening of multi-walled carbon nanotubes (CNTs) was achieved by size-reduction treatment using shear force. Special atomizing unit with double diamond disks under a higher forwarding speed of CNTs suspension was used to obtain a high shear force and to break the entangled CNTs. Tangled pristine CNTs can be shor…
In current studies, equal channel angular pressing process (ECAP) and modified ECAP processes are simulated under ideal conditions to compare the deformation characteristics. The deformation behaviour is more complicated and the strain induced during the processes is highly non-uniform in the modified ECAP processes e…
We perform first-principles calculations for a newly discovered iron-based superconductor Sr 2 ScFePO 3 whose blocking layer is a thick perovskite-based oxide (Sr 2 ScO 3 ) and systematically compare its results with those of other typical iron-based superconductors. We find that the thick blocking layer (Sr 2 ScO 3 )…
Li0.35Zn0.3Fe2.35O4 ferrite powder was prepared by Sol-Gel method.The electromagnetic parameters er(er=e′-j e″) and μr(μr=μ′-j μ″) in 2-18GHz band of the products were tested by HP 8722ES vector network analyzer.Microwave absorbing capability is simulated on the basis of transmission line theory.The result shows that…
A cell-automaton model for a binary eutectic system has been developed. This study examines a Bridgeman-type temperature field with periodic boundary conditions. A stable operating range of lamellar spacings is obtained based on the parameters of the temperature field. The undercooling of the liquid phase ahead of the…
This work deals with the study of corrosion behaviour for zinc in (HNO 3 + H 2 SO 4 ) binary acid mixture containing ethanolamines. Corrosion rate increases with concentration of acid and temperature. At constant acid concentration, the inhibition efficiency of ethanolamines increases with the inhibitor concentration.…
In this paper, the tunneling phenomenon occurring at the interface with great impedance contrast is investigated by numerical calculation. It is found even in this case, per- fect transmission can still be achieved theoretically when nonconjugated sub-wavelength epsilon- negative (ENG) and mu-negative (MNG) metamateri…
A morphological evolution of the growth of Fe2B boride on steel substrate has been investigated using two dimensional (2D) multi-phase-field (MPF) simulations. In order to evaluate competitive growth between boride seeds during the coating process, variations on boride seed orientation have been implemented. In additi…
Plasma electrolytic oxidation of AZ80 magnesium alloy in alkaline aluminate electrolytes develops MgAl2O4-based highly crystalline oxide coatings with the morphology changing largely with phosphate concentration in electrolyte. The thickness of the coatings increases with phosphate concentration from 5 μm in phosphate…
When analyzing the contributions of these atoms occupying 3a and 3b sites in R3-m to X-ray diffraction intensity of planes(hkl) in LiMeO_2,a or relationships are found.For the lines of plus relationship of the atoms to X-ray diffraction intensity has no relationship with the mixed occupying parameter X,but the minus o…
An anisotropic three-dimensional (3D) left-handed metamaterial (LHM) was pro- posed in this paper. The LHM is composed of unit cells with metallic Jerusalem crosses etched correspondingly on both sides of dielectric substrates. 3D left-handed property is realized by the couplings between neighboring metallic Jerusalem…
We report that nonradiative Auger recombination rate is suppressed in designed Si 1- x Ge x /Si quantum wells (QWs). The photoluminescence intensity under high-density excitation depends strongly on the width of single QWs, and Auger recombination is more pronounced for wide wells. This dependence shows that Auger rec…
Zincate treatment and electroless nickel-phosphorus plating for aluminum alloys of A1100, A2017, A5052 and A7075 were researched from the viewpoints of alloying elements and activation conducted prior to zincate treatment. Surface morphologies of zincated surfaces, electrochemical properties during zincate treatment a…