By hot extrusion at 250°C and electrical pulse treatment (EPT) of 40 ?s duration 10 min processing time, a homogeneous matrix microstructure with an average grain size 0.91 ?m abundant Mg17Al12 phase was obtained in SiCp/AZ91 magnesium composite. Moreover, SiCp were helpful to promote the accumulation crystal defects precipitation phase. After 250°C, yield strength (YS) ultimate tensile (UTS) c...

Thermoplastic cassava starch (TPS)/sisal fiber (SF) composites were prepared by the melting method. The effect of SF on retrogradation kinetics, morphology and size spherulites, molecular interactions, short-range structure, crystal type TPS was investigated. results indicate that degree rate increase with addition SF, spherulites become clearer denser. neat sample forms an A-type through doubl...

More than 10 years ago physicists gave a theoretic description of the so-called photonic crystal, an optic analog of a semiconductor. In contrast to a semiconductor, the photonic crystal is an artificial material, a composite. The dominant requirement for the photonic crystal is that electromagnetic waves of a certain length cannot propagate in it. It was also predicted that the photonic crysta...

Growing MnO2 nanocrystals in the bulk of porous carbon nanofibers is conducted in a KMnO4 aqueous solution aimed to enhance the electrochemical performance of MnO2. The rate of redox reaction between KMnO4 and carbon was controlled by the concentration of KMnO4 in a neutral solution. The MnO2 nanoparticles grow along with (211) crystal faces when the redox reaction happens on the surface of fib...

Chitosan hydrogels are of considerable interest in synthetic biomimetic mineralisation strategies due to their favourable characteristics such as the presentation of a large surface area for crystal nucleation within a structured yet responsive scaffold. Chitosan hydrogels were prepared and subsequently calcium carbonate mineralisation was initiated using a method which combines alternate soaki...

Large Li2O2 aggregations can produce high-capacity of lithium oxygen (Li-O2) batteries, but the larger ones usually lead to less-efficient contact between Li2O2 and electrode materials. Herein, a hierarchical cathode architecture based on different discharge characteristics of α-MnO2 and Co3O4 is constructed, which can enable the embedded growth of large Li2O2 aggregations to solve this problem...

The electrorheological (ER) properties of composite materials consisting a nematic liquid crystal (LC) and gold nanoparticles (GNPs) coated with bistolane-based mesogenic groups were studied. GNPs by normal alkyl chains the fluorescent LC compounds, which molecular structure was similar to that matrix. dispersity in investigated polarizing optical microscopy (POM). In order improve ER effect co...

The molecular structure of amyloid fibrils and the mechanism of their formation are of substantial medical and biological importance, but present an ongoing experimental and computational challenge. An early high-resolution view of amyloid-like structure was obtained on amyloid-like crystals of a small fragment of the yeast prion protein Sup35p: the peptide GNNQQNY. As GNNQQNY also forms amyloi...

We demonstrate a readily scalable print, lift, and stack approach for producing large-area, 3D photonic crystal (PC) structures and optical gratings. UV-assisted nanoimprint lithography was used to pattern grating structures composed of highly filled nanoparticle (NP) polymer composite resists with tunable refractive indices (RI). The gratings were robust and upon release from a support substra...