Materials Literature
按标题、摘要、年份、主题和来源检索公开元数据。结果保留作者、摘要、分类与原始来源链接。
This work was aimed to study the effect of natural polyphenol extract ( Acacia catechu ) on physicochemical properties of starch/PVA-based film. Acacia catechu extracts were incorporated in the starch/PVA- (60 : 40%) based films at different concentrations (0.1% to 15%) to the total weight of starch/PVA-based film. Th…
Surface-immobilized monolayers of fluorescent molecular sensors consisting of a short conjugated oligo(p-phenylene ethynylene) core end-capped with an acceptor fluorophore (analyte receptor) display significant signal amplification due to enhanced intermolecular energy transfer within the monolayer. This general pheno…
A new compound, Na(1.515)EuGeS(4), has been synthesized at 750 °C from a reaction of elemental europium, germanium, and sulfur and Na(2)S. The compound crystallizes in the trigonal system with Z = 18 and the R3c space group with a = 23.322(3) Å, c = 6.838(1) Å, and V = 3221.2(9) Å(3). Na(1.515)EuGeS(4), which is isost…
Radial photonic crystals (RPCs) are a class of microstructured media that possess very particular electromagnetic features. Their properties are driven by radially dependent permittivity and permeability profiles that are also anisotropic. A two dimensional RPC structure is designed and analyzed in order to assess its…
The effect of alumina content and heat treatment time, on microstructure and cooperative emission of oxyfluoride glass‐ceramics were investigated. Two values (1.8 and 2.18) were selected for SiO 2 / Al 2 O 3 ratio. The results indicated that alumina content had a significant effect on the phase separation and the visc…
In this study three chemical agents Amino-propyl-triethoxy-silane (APS), sorbitol ended PLA oligomer (SPLA) and Hexamethylene diisocyanate (HDI) were identified to be used as coupling agents to react with the phosphate glass fibre (PGF) reinforcement and the polylactic acid (PLA) polymer matrix of the composite. Compo…
Abstract Combined soft X‐ray scattering and reflectometry techniques promise analysis of polymer thin film domain structure and composition without resorting to chemical modification or isotopic labeling. This work explores the capabilities of these techniques in polymer films of poly(styrene‐b‐methyl methacrylate) (P…
A catalyst-free synthesis of ZnO nanostructures using platinum microheaters under ambient environmental conditions has been developed. Different types of ZnO nanostructures are synthesized from the oxidization of Zn thin film by local heating. The characterization of two shapes of Pt microheaters is investigated and t…
We demonstrate the dip‐pen nanolithography ( DPN ) process of BiFeO 3 nanodots forming a nanodot at any desired position. The BiFeO 3 nanodots exhibited a size increment from 30 to 180 nm for the deposition time between 0.1 and 10 s. This position‐controlled DPN using a silicon nitride cantilever produced an array of…
Abstract Background Fermentation using encapsulated yeast leads to more robust ethanol production from lignocellulose hydrolyzates. Encapsulated yeast is much more tolerant to inhibitors present in hydrolyzates, and fermentation is faster due to increased total cell density. For industrial applications, capsules must…
Abstract Due to their magneto‐mechanical coupling and biocompatibility, Fe‐Pd based ferromagnetic shape memory alloys are a highly promising materials class for application as contact‐less magneto‐mechanical transducers in biomedical environments. For use in cell and tissue actuators or strain sensors, sufficient adhe…
A new method of preparation and the properties (solubility, aggregation, spectralluminescent properties, singlet oxygen and photobleaching quantum yields) of non-metal 2,3,9,10,16,17,23,24-octacarboxyphthalocyanine are reported. The influence of ionization state on photophysicochemical properties of this dye is also p…
Abstract Die oberflächenverstärkte Raman‐Streuung (SERS) ist ein leistungsfähiges und relativ direktes molekülspektroskopisches Verfahren aus dem Bereich der Nanoplasmonik. Das Prinzip von SERS ist die Verstärkung der unelastischen Streuung von Molekülen, die sich nahe einer nanostrukturierten Metalloberfläche mit dur…
Abstract Polyaniline/silver (PANI/Ag) nanocomposite was successfully prepared by in‐situ polymerization from nanosilver sol using aniline (An) as both dispersant and stabilizer and characterized by FT‐IR, XRD SEM, TEM and electrochemical methods, respectively. The results showed that core‐shelled composite particles o…
This study is focused on the effect of the sintering additive on the microstructure and properties of HfB 2 composites reinforced with SiC Hi –Nicalon fibers. The materials were spark plasma sintered with addition of 5–10 vol% of Si 3 N 4 or ZrSi 2 . The fibers morphology was examined using scanning and transmission e…
A novel fluorinated pyridine-containing aromatic diamine monomer, 4-phenyl-2,6-bis[2-(4-amino-2-trifluoromethyphenoxy)phenyl]pyridine ( o, p-6FPAPP), was prepared in a three-step synthetic route. This aromatic diamine was then employed to synthesize a series of fluorinated pyridine-containing polyimides (PIs) by polyc…
The method to observe the exact morphology of swelled seaweed as an example of biological material by field emission scanning electron microscopy (FE-SEM) with the aid of hydrophilic ionic liquid (IL); 1-butyl-3-methylimidazolium tetrafluoroborate is reported. Seaweed was first swelled in 3.5% NaCl solution and then t…
In this investigation, several novel optically active and potentially biodegradable poly(amide-imide)s were synthesized through direct polycondensation reaction. First, a new aromatic diamine compound including pyridine ring was synthesized, which was reacted with diimide dicarboxylic acids containing different natura…
The SiC / SiO 2 nanochains heterostructure with double amorphous layers was successfully synthesized by a catalyst‐free chemical vapor deposition process at 1280°C. The SiC / SiO 2 nanochains experience an apparent regular periodic structure, whose SiO 2 beads with diameters of about 160 nm are positioned on the SiC s…
A new procedure has been developed for synthesis of symmetrical trithiocarbonates by one-pot reaction of carbon disulfide, and various alkyl halides in dimethylformamide using K3PO4 as an inexpensive and effective reagent.