Materials Literature
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We systematically measured the dc voltage V(ISH) induced by spin pumping together with the inverse spin Hall effect in ferromagnet-platinum bilayer films. In all our samples, comprising ferromagnetic 3d transition metals, Heusler compounds, ferrite spinel oxides, and magnetic semiconductors, V(ISH) invariably has the…
Zeolites are microporous materials with pores and channels of molecular dimensions that find numerous applications in catalysis, separations, ion exchange, etc. However, whereas uniformity of micropore size is a most desirable and enabling characteristic for many of their uses, in certain cases, for example in reactio…
Abstract We show enhanced efficiency and stability of a high performance organic solar cell (OPV) when the work‐function of the hole collecting indium‐tin oxide (ITO) contact, modified with a solution‐processed nickel oxide (NiO x ) hole‐transport layer (HTL), is matched to the ionization potential of the donor materi…
Non-noble-metal catalysts based on Fe–N–C moieties have shown promising oxygen reduction reaction (ORR) activity in proton exchange membrane fuel cells (PEMFCs). In this study, we report a facile method to prepare a Fe–N–C catalyst based on modified graphene (Fe–N– r GO) from heat treatment of a mixture of Fe salt, gr…
For sorting peas: When a mixture of cycloparaphenylenes (CPPs) is treated with C60, [10]CPP selectively encapsulates C60 forming the shortest fullerene-peapod, [10]CPP⊃C60 (see picture). Such complementary host–guest complexes could be useful for the size- and shape-selective separation of higher fullerenes and carbon…
Here we present detailed structural evidence of captured molecular iodine (I(2)), a volatile gaseous fission product, within the metal-organic framework ZIF-8 [zeolitic imidazolate framework-8 or Zn(2-methylimidazolate)(2)]. There is worldwide interest in the effective capture and storage of radioiodine, as it is both…
In the fi eld of polymer-based photovoltaic cells, poly(3-hexylthiophene) (P3HT) and 1-(3-methoxycarbonyl)propyl-1-phenyl[6,6]C₆₁ (PCBM) are, to date, the most-studied active materials around the world for the bulk-heterojunction structure. Various power-conversion effi ciencies are reported up to approximately 5%. Th…
Graphene plasmons provide a suitable alternative to noble-metal plasmons because they exhibit much tighter confinement and relatively long propagation distances, with the advantage of being highly tunable via electrostatic gating. Here, we propose to use graphene plasmons as a platform for strongly enhanced light-matt…
Application of the Kirkendall Effect to Morphology Control of Nanowires: Morphology Change from Metal Nanowires to Oxide Nanotubes
Article Alternative Method for Pyrometallurgical Recycling of EAF Dust Using Plastic Waste Containing Tetrabromobisphenol A was published on August 1, 2011 in the journal High Temperature Materials and Processes (volume 30, issue 4).
Abstract— A continuous‐viewing‐angle‐controllable liquid‐crystal display (LCD) using a blue‐phase liquid crystal is proposed. To realize both wide‐viewing‐angle (WVA) mode and narrow‐viewing‐angle (NVA) mode with a single liquid‐crystal panel, each pixel is divided into a main pixel and a subpixel. The main pixel is f…
The dynamics and mechanism of migration of a vacancy point defect in a two-dimensional (2D) colloidal crystal are studied using numerical simulations. We find that the migration of a vacancy is always realized by topology switching between its different configurations. From the temperature dependence of the topology s…
Two W/Mo complexes, [Et3NH]2[WO2(C10H6O2)2] (1) and [Et3NH]2[MoO2(C10H6O2)2] (2), were synthesized by the reaction of Na2WO4 · 2H2O and (NH4)2Mo2O7 · 4H2O with 2,3-DHN (DHN = dihydroxynaphthalene) and triethylamine, and characterized by X-ray diffraction and IR. The two complexes exhibit chiral octahedral geometry at…
The advancement of nanotechnology provides opportunities for fabrication of nanoscale materials and higher performance devices using nanomaterials with high precision. Currently, various nanomaterials and nanostructures in the range of 1 to 100 nm have been produced by chemical and physical methods. Among various nano…
The development of truly scalable, multiplexed optical microarrays requires a detection platform capable of simultaneous detection of multiple signals in real-time. We present a technique we term dual-order snapshot spectroscopic imaging (DOSSI) and demonstrate that it can be effectively used to collect spectrally res…
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Bronization and carburization of fine-grain superplastic stainless steel is reviewed, and new experimental results for fine grain Ti88.5Al4.5V3Fe2Mo2 are reported. In superplastic duplex stainless steel, the diffusion of carbon and boron is faster than in non-superplastic duplex stainless steel. Further, diffusion is…
Hydrophobically coated gold nanoparticles have been inserted in swollen surfactant lamellar phases. Insertion of the gold nanoparticles is observed only above a critical hydrophobic thickness that depends on the particle size. Such a system can thus be used as a size filter for hydrophobically coated gold nanoparticle…
Dispersion of graphene nanoplatelets (GNPs) with a pyrene derivative compound (1,3,6,8-tetrakis(4- t -butylphenyl)pyrene (TBPP)) in tetrahydrofuran as solvent medium is investigated. Field-emission electron microscopy and atomic force microscopy demonstrated the π–π stacking interaction between the TBPP compound and t…