Materials Literature
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A combination of ultraviolet and X-ray photoelectron spectroscopy, X-ray absorption spectroscopy, and first principle calculations was used to study the electronic structure at the interface between the strong molecular acceptor 1,3,4,5,7,8-hexafluorotetracyano-naphthoquinodimethane (F6TCNNQ) and a graphene layer supp…
Surface supported, low dimensional gold nanostructures are of interest for plasmonic applications. Low dimensional nanostructures are readily accessible by solution-phase growth, where shape control through the addition of growth-directing surfactants is well established. Yet, shape control in chemical vapor depositio…
Abstract. To meet today's emission standards, the ammonia-based selective catalytic reduction (SCR) has become the major NOx control strategy for light and heavy diesel engines. Before NOx reduction can proceed, adsorption of ammonia on the acidic sites of the catalyst is necessary. For improvements in efficiency and…
Abstract Three different phases of thorium(IV) oxalate hydrate [Th(C 2 O 4 ) 2 · x H 2 O] with different water contents, namely, the hexahydrate, dihydrate, and anhydrous phases, were prepared by thermal treatment of the as‐precipitated hydrated thorium(IV) oxalates. With the change in water content, the structure cha…
Native tissues are typically heterogeneous and hierarchically organized, and generating scaffolds that can mimic these properties is critical for tissue engineering applications. By uniquely combining controlled radical polymerization (CRP), end-functionalization of polymers, and advanced electrospinning techniques, a…
Proton conduction of the La(III)M(III) compounds, LaM(ox)3·10H2O (abbreviated to LaM; M = Cr, Co, Ru, La; ox(2-) = oxalate) is studied in view of their networks. LaCr and LaCo have a ladder structure, and the ladders are woven to form a channel network. LaRu and LaLa have a honeycomb sheet structure, and the sheets ar…
Chemical exchange saturation transfer (CEST) allows the indirect detection of dilute metabolites in living tissue via MRI of the tissue water signal. Selective radio frequency (RF) with amplitude B1 is used to saturate the magnetization of protons of exchanging groups, which transfer the saturation to the abundant wat…
The local-density approximation combined with the dynamical mean-field theory $(\text{LDA}+\text{DMFT})$ is applied to the paramagnetic phase of light actinide dioxides: ${\mathrm{UO}}_{2},\phantom{\rule{0.16em}{0ex}}{\mathrm{NpO}}_{2}$, and ${\mathrm{PuO}}_{2}$. The calculated band gaps and the valence-band electroni…
We propose a novel active magneto-chiral system consisting of a separated Au/Co multilayer with perpendicular magnetic anisotropy and plasmonic chiral oligomers. The electromagnetic interaction between the Au/Co multilayer and chiral building blocks, which is governed by their separation distance, plays a relevant rol…
First-principles calculations based on the density functional theory were carried out to investigate the magnetic property of phosphorene. It is found that vacancy or external strain alone does not result in magnetism in phosphorene. However, an interplay between vacancy and external strain can lead to magnetism. When…
One of the challenges in valleytronics is how to effectively manipulate the valley degree of freedom of electrons in graphene. We propose to use a pseudovalley exchange field to rotate the valley, which arises in a graphene superlattice (GS) structure due to the two inequivalent $K$ and ${K}^{\ensuremath{'}}$ valleys…
We present an electronic transport experiment in graphene where both classical and quantum mechanical charge detector back-action on a quantum dot are investigated. The device consists of two stacked graphene quantum dots separated by a thin layer of boron nitride. This device is fabricated by van der Waals stacking a…
We investigate the temperature dependence of three major Raman modes of black phosphorus (BP) prepared by mechanical exfoliation from room temperature to 325 °C. With increasing temperature, all the Raman peaks show redshift in peak position and broadening in linewidth, but they depend on the film thickness. The first…
The major challenges for directly converting lignocellulosic biomass into available materials in place of synthetic polymer materials are the complex chemical–physical structure and the narrow processing windows of the resources. In the present study, homogeneous chemical modification of sugarcane bagasse with phthali…
Hierarchical nanoarchitecture and porous structure can both provide advantages for improving the electrochemical performance in energy storage electrodes. Here we report a novel strategy to synthesize new electrode materials, hierarchical Co-based porous layered double hydroxide (PLDH) arrays derived via alkali etchin…
Immobilized Pt clusters are interesting catalysts for dehydrogenation of alkanes. However, surface-deposited Pt clusters deactivate rapidly via sintering and coke deposition. The results reported here suggest that adding boron to oxide-supported Pt clusters could be a “magic bullet” against both means of deactivation.…
Formation of formate species on oxide surfaces plays a role in reactions for hydrogen production such as the water–gas shift and the steam-reforming of alcohols. It has been suggested that bridge formates are the most common and stable configuration on metal oxides. Ceria-based catalysts are important for these reacti…
Through a straightforward approach, a new meltable, halogen-free, nitrogen-phosphorus-based flame retardant (FR), 6-(2-(4,6-diamino-1,3,5-triazin-2-yl)ethyl) dibenzo[c,e][1,2]oxaphosphinine 6-oxide (DTE-DOPO) was synthesized and incorporated in polyamide 6 (PA6). It was proved that a very low phosphorus content of 1.4…
We present very low-temperature scanning tunneling microscopy (STM) experiments on single-crystalline samples of the superconductor $\ensuremath{\beta}\ensuremath{-}{\mathrm{Bi}}_{2}\mathrm{Pd}$. We find a single superconducting gap from the zero-field tunneling conductance. However, the magnetic field dependence of t…
The thermal properties of polymers are intricately related to the structural elements. Using equilibrium molecular dynamics simulations, we study the thermal conductivity of ultrathin amorphous polystyrene films versus density, ρ, film thickness, dz, and the ratio of thickness to the radius of gyration, dz/Rg , known…