Materials Literature
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Hydrophobins are small, amphiphilic proteins expressed by strains of filamentous fungi. They fulfill a number of biological functions, often related to adsorption at hydrophobic interfaces, and have been investigated for a number of applications in materials science and biotechnology. In order to understand the biolog…
We have investigated the effect of heat treatment in air on Au–Pd nanoparticles supported on titania and activated carbon prepared via the immobilisation of PVA-stabilised alloy nanoparticles. The catalytic activity of the gold–palladium nanoparticles was affected by both metal and PVA loading, as well as the degree o…
Graphene growth on the same metal substrate with different crystal morphologies, such as single crystalline and polycrystalline, may involve different mechanisms. We deal with this issue by preparing graphene on single crystal Ni(111) and on ∼300 nm thick Ni films on SiO2 using an ambient pressure chemical vapor depos…
Growth of Pt n ( n ≤ 37) clusters on the defect-free TiO 2 anatase (101) surface has been studied using ab initio pseudopotential calculations based on density functional theory. Several initial configurations for clusters of 1, 2, 7, 10, and 37 atoms were relaxed to determine the most stable structures. All final opt…
Abstract We describe a semi-analytical method for the fast calculation of secondary fluorescence in electron probe microanalysis of material couples. The calculation includes contributions from primary K-, L- and M-shell characteristic x-rays and bremsstrahlung photons. The required physical interaction parameters (su…
It is generally assumed that the quality of X-ray diffraction data can be improved by merging data sets from several crystals. However, this effect is only valid if the data sets used are from crystals that are structurally identical. It is found that frozen macromolecular crystals very often have relatively low struc…
We report first-principles calculations, within the density functional theory, on the structural and energetic properties of 180${}^{\ensuremath{\circ}}$ stripe domains in (PbTiO${}_{3}$)${}_{n}$/(SrTiO${}_{3}$)${}_{n}$ superlattices. For the explored periodicities ($n=3$ and 6), we find that the polydomain structures…
The intercalation of cetirizine into two types of layered double hydroxides, Zn/Al and Mg/Al, has been investigated by the ion exchange method to form CTZAN and CTMAN nanocomposites, respectively. The basal spacing of the nanocomposites were expanded to 31.9 Å for CTZAN and 31.2 Å for CTMAN, suggesting that cetirizine…
A series of melt-blends were prepared from nylon 6 and a polyhedral oligomeric silsesquioxane (aminopropylisobutyl POSS) in order to develop an understanding of the role of processing in polymer property enhancement. Injection molded samples of the blends show decreases in mechanical properties, while melt-spun compos…
Abstract A novel method to prepare TiO 2 ‐coated Ag nanowire arrays for use as multifunctional surface enhanced Raman scattering (SERS) active substrates is introduced. Such an array is made by the synthesis of an Ag nanowire array utilizing an anodic aluminum oxide (AAO) template, followed by coating of the Ag wires…
The growth of CdSxSe1-x (0 < x < 1) nanowire arrays are demonstrated for the first time with the vapor transport method on a muscovite substrate. The results of our characterizations show that our facile growth method enables accurate composition adjustability for the modulation of the crystalline, optical, and photoc…
The novel strain-driven morphotropic phase boundary (MPB) in highly strained BiFeO(3) thin films is characterized by well-ordered mixed phase nanodomains (MPNs). Through scanning probe microscopy and synchrotron X-ray diffraction, eight structural variants of the MPNs are identified. Detailed polarization configuratio…
The ProBiS web server is a web server for detection of structurally similar binding sites in the PDB and for local pairwise alignment of protein structures. In this article, we present a new version of the ProBiS web server that is 10 times faster than earlier versions, due to the efficient parallelization of the ProB…
Abstract Polylactide (PLA) is an attractive candidate for replacing petrochemical polymers because it is biodegradable. In this study, a specific PLA 2002D was melt‐mixed with a new plasticizer: glycerol monostearate (GMS). The PLA/GMS blends with different ratios were analyzed by dynamic mechanical analysis and diffe…
We study the dispersion relation of a metamaterial composed of metallic disks and bars arranged to have kagom\'e symmetry and find that a plasmonic flat band is formed by the topological nature of the kagom\'e lattice. To confirm the flat-band formation, we fabricate the metamaterial and make transmission measurements…
The application of biochar techniques to soil has rarely been investigated to date. The effectiveness of applications of composts, animal manures or mineral fertilizers are known to vary significantly whether they are incorporated or surface applied, banded or broadcast (Jarvis and Bolland, 1991; Gherardi and Rengel,…
"Green" graphene: For the first time, the covalent attachment of a light-harvesting and electron-donating phthalocyanine to the basal plane of few-layer graphene is reported. Physicochemical characterizations reveal an ultrafast charge separation from the photoexcited phthalocyanine to few-layer graphene followed by a…
The local conformation of polymer chains in a film at a substrate interface was examined by sum-frequency generation spectroscopy. When a polystyrene (PS) film was prepared on a quartz substrate by a spin-coating method, the chains were aligned in the interfacial plane of the substrate. A dissipative particle dynamics…
We combine a wide variety of experimental techniques to analyze two heretofore mysterious phase transitions in multiferroic bismuth ferrite at low temperature. Raman spectroscopy, resonant ultrasound spectroscopy, electron paraelectric resonance, x-ray lattice constant measurements, conductivity and dielectric respons…
A novel cobalt-free and noble metal-free dual-phase oxygen-transporting membrane with a composition of 40 wt % Pr 0.6 Sr 0.4 FeO 3−δ –60 wt % Ce 0.9 Pr 0.1 O 2−δ (40PSFO–60CPO) has been successfully developed via an in situ one-pot one-step glycine-nitrate combustion process. In situ XRD demonstrated that the 40PSFO–6…