Materials Literature
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The fundamental physics and chemistry that control the formation of nanoporous gold involve a complex choreography of electrochemical dissolution, diffusion, and geometry. In this chapter, we introduce the basic phenomenology of dealloying, including the physical origin of the parting limit and critical potential. Rel…
Abstract A gasification plant is integrated on the top of a solid oxide fuel cell (SOFC) cycle, while a steam turbine (ST) cycle is used as a bottoming cycle for the SOFC plant. The gasification plant was fueled by woodchips to produce biogas and the SOFC stacks were fired with biogas. The produced gas was rather clea…
Here we report a simple method for the preparation of highly aligned metallic nanofibers with anisotropic aggregates of silver nanoparticles (AgNPs) as well as a direct observation of localized plasmon field and its coupling in the prepared metallic nanofibers. Metallic nanofibers of several tens of nanometers wide an…
XANES and RBS were used to explore the structural phase and composition transitions of ultrathin films with Ti(1−x)Zn2xO2 stoichiometries, from very low (∼0.5 at.%) to high (∼25 at.%) titanium content. In this way, the coordination chemistry of Ti4+ and Zn2+ cations was examined for a wide range of oxide compositions.
Isostructural lanthanide oxalatophosphonates Ln(5pm8hqH3)(C2O4)1.5(H2O)·2H2O [Ln(III) = Eu(1), Gd(2), Tb(3), Dy(4)] have been obtained through hydrothermal reactions of 5-phosphonomethyl-8-hydroxyquinoline (5pm8hqH3), oxalate, and Ln(NO3)3·6H2O. Four compounds reveal layer structures, in which {LnO8} polyhedra are lin…
Abstract—In this paper, we propose a cylindrical rolled-up negative permeability metamaterial (MM) lens for magnetic resonance imaging (MRI), and some analyses are given. The proposed cylindrical MM lens is fabricated by rolling a MM slab (constituted with capacitive-loaded copper split rings) into a tube that resembl…
We present the first study of the interaction of a cellulase enzyme mixture with cellulose microfibrils using surface plasmon resonance (SPR) imaging. The cellulose microfibrils, obtained from the bacterium Acetobacter xylinum, were heterogeneously distributed on a thin layer of thioglucose deposited onto a gold film.…
A new metamaterial topology is proposed, based on dielectric coated spheres. The effect of the coating is an increased negative permittivity and permeability bandwidth compared with the non-coated spheres. The influence of the dimensional parameters is analyzed, and the relation of each of them with the bandwidth is s…
Understanding the nature of interaction between metal nanoparticles and biomolecules such as amino acids is important in the development and design of biosensors. In this paper, binding of M(3) clusters (M = Au, Ag and Cu) with neutral and anionic forms of histidine amino acid was studied using density functional theo…
Core-shell nanospheres with a nanosize Co3O4 core and a periodic mesoporous organosilica (PMO) shell were fabricated by the packing and self-assembly of nanosize Co3O4 particles–surfactant–organosilica complexes based on the S+I− pathway under basic conditions. The amount of Co3O4 nanoparticles is crucial to the forma…
The formal [2 + 2] cycloaddition-cycloreversion (CA-CR) between 4-ethynyl-N,N-dimethylaniline and polyenic Donor-π-Acceptor (D-π-A) systems takes place to yield compounds bearing two donors and one acceptor. Structural, linear and second-order nonlinear optical (NLO) properties of the new molecules reveal the stronger…
A novel type of nanofibrous membrane was assembled using hierarchical K-OMS-2/GO-SO3H heterojunctions, and the membrane exhibited excellent permeability and selectivity in a dead-end microfiltration process.
The poor thermal stability of nanoparticle superlattices heavily inhibits their practical applications. In present research, using stable thiolate-capped Au11(SCH2CH2COO−)7([CH3(CH2)7]4N+)7 nanoclusters as the building blocks, novel luminescent Au11 nanocluster superlattices with high thermal stability have been fabri…
Surfactant-assisted co-condensation of an emissive tetranuclear alkynyl-phosphine copper cluster with TEOS affords a hydrothermally stable blue-emitter mesoporous hybrid metal complex-silica material.
A modular approach combining nanoscale components that each contribute to an enhancement in Gd(III) relaxivity is described here. Small molecule and dendritic alkyne derivatives of a Gd(III) complex were conjugated to the surfaces of biodegradable polymersomes resulting in ionic relaxivities of 10.6 mM−1 s−1 and 26.1…
A novel decanuclear Co(II) cluster, [Co(10)(Q)(12)(μ(6)-CO(3))(4)]·2.5DMF (1) (Q = 8-hydroxyquinoline), has been synthesized under solvothermal conditions and characterized by powder XRD, TGA and IR spectroscopy. Single-crystal X-ray diffraction analysis shows that 1 represents a new type of decanuclear cobalt cluster…
The differential capacitance curves were measured with an ac bridge in the Ga/[N-MF + 0.1 m M KBr + 0.1 (1 − m) M KClO4] and Ga/[N-MF + 0.1 m M KI + 0.1 (1 − m) M KClO4] systems at the following fractions m of surface-active anions: 0, 0.01, 0.02, 0.05, 0.1, 0.2, 0.5, and 1. As compared with other solvents, N-methyl f…
The effect of frequency and sintering temperature on initial permeability of Ni0.55Zn0.45Fe2O4 ferrites have been studied by using an impedance analyzer. The samples were prepared by conventional double sintering ceramic technique using oxide nanoparticles of grain size 30 - 50 nm. Single phase spinal structure has be…
The influence of ethanolamine and ethylamine on the corrosion behaviour of mild steel in 1M H2SO4 solution was investigated at room temperature (25oC) by weight loss method. Results obtained show that the compounds are better inhibitors at low concentrations (<0.3M). From the decreasing weights of the metal ove…
In the present study the deterministic thermo-chemical pultrusion simulation of a composite rod taken from the literature [7] is used as a validation case. The predicted centerline temperature and cure degree profiles of the rod match well with those in the literature [7]. Following the validation case, the probabilis…