Materials Literature
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In the literature on composite materials with extreme or unusual electromagnetic properties (so-called metamaterials), it is common to retrieve the effective material parameters from the scattering parameters (complex reflection and transmission coefficients) of the metamaterial layer. Most often, this retrieval is do…
Eine autonome funktionelle Oberfläche wurde mithilfe selbstoszillierender Polymere entwickelt, die die chemische Energie der Belousov-Zhabotinsky-Reaktion in Änderungen der Polymerkettenkonformation umwandeln (siehe Bild: rot: hydrophob/kollabiert, grün: hydrophil/gestreckt). Selbstoszillierende Polymerbürsten wurden…
We demonstrate the effects of electron-electron (e-e) interactions in monolayer graphene quantum capacitors. Ultrathin yttrium oxide showed excellent performance as the dielectric layer in top-gate device geometry. The structure and dielectric constant of the yttrium oxide layers have been carefully studied. The inver…
We report on the directed upright growth of ferroelectric (FE) Pb(Zr0.52Ti0.48)O3 (PZT) nanowire (NW) arrays with large aspect ratios of >60 using a Ti seed layer assisted hydrothermal process over large surface areas on ITO/glass substrates. In a two-step growth process, Ti seed layer of low surface roughness with a…
A novel luminogen, CZ2TPAN, with typical D-A architecture was obtained. It shows intramolecular charge transfer and aggregation-induced emission characteristics with high solid-state efficiency of 65.3%. Moreover, it exhibits reversible mechanochromic behavior between crystalline and amorphous states with remarkable e…
Protein structures are an ensemble of atoms determined experimentally mostly by X-ray crystallography or Nuclear Magnetic Resonance. Studying 3D protein structures is a key point for better understanding protein function at a molecular level. We propose a set of accurate tools, for analysing protein structures, based…
Biodegradable polyelectrolyte surfaces for gene delivery were created through electrospinning of biodegradable polycations combined with iterative solution-based multilayer coating. Poly(β-amino ester) (PBAE) poly(1,4-butanediol diacrylate-co-4-amino-1-butanol) end-capped with 1-(3-aminopropyl)-4-methylpiperazine was…
Making light work: Three novel W/Nb mixed-addendum polyoxometalates, which all contain the {SiNb3W9O40} cluster, have been synthesized by conventional aqueous methods. Visible-light photocatalytic H2 evolution activity (see figure) was observed for two of the compounds, with H2PtCl6 as a cocatalyst and triethylamine a…
Abstract Purpose – The aims are to investigate the influence of different environmental parameters on atmospheric corrosion of carbon steel and to further emphasize the feasibility and importance of atmospheric corrosion monitor (ACM). Design/methodology/approach – The experiment includes outdoor exposure test and lab…
Neisseria meningitidis is the causative agent of meningitis and meningococcal septicemia is a major cause of disease worldwide, resulting in brain damage and hearing loss, and can be fatal in a large proportion of cases. The enzyme 3-deoxy-d-arabino-heptulosonate 7-phosphate synthase (DAH7PS) catalyzes the first react…
As part of a continuing effort to find noncoherent photon upconversion (NCPU) systems with improved energy conversion efficiencies, the photophysics of the blue emitter, anthanthrene (An), and the fullerene absorber-sensitizer, C60, have been examined by both steady-state and pulsed laser techniques. An is a promising…
ABSTRACT Inspired by the spontaneous cyclization of ornithine in peptides, polyesters containing protected ornithine (Orn) side chains along the backbone were synthesized and shown to degrade rapidly upon deprotection through intramolecular cyclization. A new ornithine‐based poly(ester amide) PEA 1 and a lysine‐based…
Abstract Partial hydrogenation of benzene to cyclohexene is attractive in terms of feedstock accessibility, atomic economy, and operational simplicity. Herein, a series of Ru/ZrO 2 catalysts were prepared by post‐treatment of a binary Ru–Zn/ZrO 2 catalyst using 5–30 wt % NaOH aqueous solutions. Alloying between Ru and…
Multi-wall carbon nanotubes (MWNTs) with different loadings (0, 1, 3, 5, 7 and 9 wt%) were incorporated into polyamide 11 using a powder–powder mixing technique to form nanocomposites. The density and specific heat of each nanocomposite were measured. Thermal conductivities of these polymer nanocomposite powders were…
Fluoride phosphate glass has the ability to detect ionizing radiation, and thus can be utilized in various forms for the purposes of dosimetry. To further understand the potential of this material, the luminescence properties have been studied using techniques such as thermoluminescence (TL)and optically stimulated lu…
Purpose The purpose of this paper is to study the buckling and the vibration of the beam induced by atom/molecule adsorption using the nonlocal Euler‐Bernoulli beam model with initial axial stress. Design/methodology/approach The nonlocal parameter associated with adsorbed mass and bending rigidity variations of the b…
Superconducting transition under pressure ($P$) has been investigated for optimum-doped $R$FeAsO${}_{1\ensuremath{-}x}$F${}_{x}$ ($R=\text{La}$, Ce--Sm) by dc magnetization measurements. For $R=\text{La}$, ${T}_{c}$ is found to be pressure independent up to $P\ensuremath{\sim}3.0$ GPa and then shows a monotonic decrea…
First-principles molecular dynamics simulations of liquid and undercooled aluminum have been performed to study the evolution of dynamic properties across the melting point. Single-atom as well collective dynamic properties are determined and are related to the structural evolution of the liquid phase. The temperature…
In this letter, we computationally explore a wide-angle and polarization-insensitive perfect absorber based on hybrid metal-dielectric-metal structures. By introducing an organic photovoltaic layer between top metallic nanopatterns and a continuous metal bottom plate, an enhanced angle-and polarization-insensitive abs…
Inhibition mechanism of three purine compounds, adenine (A), 2-amino-6-thiol-9H-purine (B) and 2,6-dithiol-9H-purine (C), was investigated by quantum chemical calculation and molecular dynamic simulation. The molecular reactivity was studied by quantum chemical calculation, and the distribution of the highest occupied…