Materials Literature
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The aim of this work was to determine the minimum surface cleanliness of aluminium substrates required for good and reproducible silicone rubber adhesion. Aluminium substrates were prepared, ranging from ‘contaminated’ to different degrees of ‘cleaned’. The surface energy of the substrates was determined by contact an…
Natural single-crystal specimens of the montebrasite/amblygonite series from Brazil, with general formula LiAlPO 4 (F,OH), were investigated by electron microprobe, Raman spectroscopy, X-ray diffraction, and infrared absorption. Since little is known about impurities and their local symmetries, electron paramagnetic r…
Grenzgänger: Das lineare Makromolekül PG5 (200×106 Da) mit einer definierten Struktur ist bezüglich seiner Molmasse, seines Querschnitt und seiner zylindrischen Form vergleichbar mit natürlichen Objekten wie Amyloidfibrillen oder bestimmten Pflanzenviren. Das Makromolekül verflacht sich nicht auf einer Oberfläche; das…
The electrochemical, UV/Vis-NIR absorption, and emission-spectroscopic features of (TBA(+))(1(-)) and the corresponding neutral complex 1 were investigated (TBA(+)=tetrabutylammonium; 1(-)=[Au(III)(Pyr,H-edt)(2)](-); Pyr,H-edt(2-)=pyren-1-yl-ethylene-1,2-dithiolato). The intense electrochromic NIR absorption (λ(max)=1…
Die Präzision der UBI-QEP-Methode wird durch ein modifiziertes Parametrisierungsverfahren deutlich verbessert, das die Abhängigkeit vom Bedeckungsgrad vollständig wiedergibt. Für viele der untersuchten Reaktionen lassen sich die Aktivierungsbarrieren auf 10 % genau berechnen, z. B. für die OH-Dissoziation auf einer Rh…
Through the complementary use of single-crystal X-ray diffraction and X-ray absorption spectroscopy, we present in this paper the first direct results on the site occupancy of thorium in the fluorapatite structure and the structural distortion created by its substitution. Structure refinements based on single-crystal…
Two pyrophyllite samples, one S037, from the Coromandel region of New Zealand and the other, S076, from Berosovska, Ural, Russia, were studied by thermogravimetric (TG and DTG), infrared (IR), and X-ray diffraction (XRD) methods to investigate structural transformations of these samples at different stages of their pa…
A monometallic (Ni2+, 1) and a bimetallic (Ni2+-Sm3+, 2) complexes based on the Salen-type Schiff-base ligand H22L (H22L = N,N′-bis(3-methoxysalicylidene)ethylene-1,2-diamine) were synthesized and characterized by FT-IR, ESI-MS and X-ray crystallography. The catalysis results showed that the two complexes with differe…
Stichtite, ideally Mg 6 Cr 2 CO 3 (OH) 16 ∙4H 2 O, from Stichtite Hill, Tasmania, Australia, and barbertonite, also ideally Mg 6 Cr 2 CO 3 (OH) 16 ∙4H 2 O, from the Kaapsehoop asbestos mine, South Africa, have been studied by powder X-ray diffraction and their structures have been refined using the Rietveld method. St…
The aspartate pathway of amino acid biosynthesis is essential for all microbial life but is absent in mammals. Characterizing the enzyme-catalyzed reactions in this pathway can identify new protein targets for the development of antibiotics with unique modes of action. The enzyme aspartate β-semialdehyde dehydrogenase…
Magneto-dielectric polymer nanocomposites are investigated as a new class of functional materials well suited for RF and microwave device applications. Magnetite (Fe3O4) nanoparticles are homogeneously dispersed in a polymer matrix, which exhibits low losses at microwave frequencies. The monodispersion of the magnetic…
Most of the previous microwave near-field probes and imaging techniques focused on surface imaging, providing ultrahigh lateral resolution. Few microwave near-field probes were developed for subsurface detection, offering both high lateral and depth resolution with varying degrees of effectiveness. In this work, a nov…
Density functional theory (DFT) calculations were carried out in a study of CO and NO adsorptions on different iron sites of Fe-ZSM-5. The adsorption energies and distances were similar for CO adsorption on both small and large cluster calculations. The adsorption energies (Δ E ) and enthalpies (Δ H ) found for NO ads…
ZnO nanorod arrays were grown on Si substrate utilizing low-temperature hydrothermal method.The X-ray diffraction(XRD) and scanning electron microscope(SEM) measurements were carried out to investigate the crystalline and morphology of the as-grown ZnO nanorods.Results indicate that the hexagonal prism ZnO nanorod arr…
Integration of multiple materials in a controllably programmed manner on the nanoscale has led to the evolution of the next generation of nanoparticles. We have explored the formation of bifunctional europium sulfide − cadmium chalcogenide composite nanostructures, as both of the semiconductor materials exhibit intrig…
Using analytical and numerical methods, we analyse the Raj–Ashby bicrystal model of diffusionally accommodated grain-boundary sliding for finite interface slopes. Two perfectly elastic layers of finite thickness are separated by a given fixed spatially periodic interface. Dissipation occurs by time-periodic shearing o…
Interaction of light and ac electric fields with a nematic liquid crystal (NLC) doped with nanosized second-generation carbosilane codendrimers containing terminal azobenzene fragments has been studied. A first-order Freedericksz transition in the linearly polarized light, accompanied by an intrinsic bistability in a…
In this work, we have developed a novel SERS-based approach to detect hydrogen peroxide (H2O2) scavenging activity by using gold nanoshell precursor nanocomposites (SiO2/GNPs) as nanoprobes. H2O2 can reduce AuCl4- to Au0 and enlarge the gold nanoparticles (GNPs) that attached on the surface of SiO2. As the concentrati…
Accurately defining species boundaries in the green algae (Chlorophyta) is integral for studies of biodiversity and conservation, water-quality assessments, and the use of particular species as paleoindicators. Recent molecular phylogenetic and SEM analyses of the family Hydrodictyaceae (Chlorophyta) resolved three ph…
Al(BH4)3⋅6 NH3 wurde auf einfachem Weg hergestellt und seine Komposite können bei <140 °C mit günstiger Kinetik mehr als 10 Gew.-% Wasserstoff durch die schwach exotherme Kombination von N-H- und B-H-Bindungen freisetzen. Die hohe Wasserstoffspeicherkapazität, einfache Dehydrierung und relativ hohe Luftstabilität mach…