Materials Literature
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The microstructure and chemical composition of the leaflets and the rachis of the palm from phoenix dactylifera L were investigated. It was found that the ratio of slot in the rachis was higher compared to the leaflets. The cellulose content was higher in the rachis whereas the lignin content in the leaflets was twice…
We demonstrate the alignment of multiwalled carbon nanotubes in bulk epoxy matrices by application of external electric field. The composites were prepared by a macro-layer-by-layer method; UV light was used to rapidly polymerize the epoxy and preserve the aligned nanotube network. The nanotube alignment generated str…
The relativistic Landau levels in the layered organic material α-(BEDT-TTF) 2 I 3 (BEDT-TTF = bis(ethylenedithio)tetrathiafulvalene) are sensitive to the tilt of the Dirac cones, which, as in the case of graphene, determine the low-energy electronic properties under appropriate pressure. We show that an applied in-pla…
The 3ω technique and time-domain thermoreflectance (TDTR) are two experimental methods capable of measuring the cross-plane thermal conductivity of thin films. We compare the cross-plane thermal conductivity measured by the 3ω method and TDTR on epitaxial (In0.52Al0.48)x(In0.53Ga0.47)1−xAs alloy layers with embedded E…
Superconducting gap symmetry of Ba0.6K0.4Fe2As2 studied by angle-resolved photoemission spectroscopy, Nakayama, K., Sato, T., Richard, P., Xu, Y.-M., Sekiba, Y., Souma, S., Chen, G. F., Luo, J. L., Wang, N. L., Ding, H., Takahashi, T.
Abstract Large‐scale, substrate‐free graphene, with few‐layered sheets, is synthesized by the CVD of methane over cobalt supported on magnesium oxides at 1000 °C in a gas flow of argon. Typically, 50 mg of the few‐layered graphene materials over 500 mg of the Co/MgO catalysts are synthesized under our experimental con…
Nanotechnology is a multidisciplinary scientific field undergoing explosive development. Nanometer-sized particles offer novel structural, optical and electronic properties that are not attainable with individual molecules or bulk solids. Advances in nanomedicine can be made by engineering biodegradable nanoparticles…
X-ray diffraction contrast tomography (DCT) is a technique for mapping grain shape and orientation in plastically undeformed polycrystals. In this paper, we describe a modified DCT data acquisition strategy which permits the incorporation of an innovative Friedel pair method for analyzing diffraction data. Diffraction…
Electromagnetic cloaking has aroused increasing interest in the scientific community, especially amongst researchers who are developing so-called metamaterials - artificial composites having exotic electromagnetic properties. In this paper we review the basic principles of metamaterials, especially those for cloaking…
The article throws light on the physical methods to modify natural fibers to be used in composites. Physical methods in natural fiber processing are used to separate natural fiber bundles into individual filaments and to modify the surface structure of the fibers so as to improve the use of natural fibers in composite…
Abstract The literature on the formation, structure and properties of allophane and imogolite is reviewed, with particular emphasis on the seminal contributions by Colin Farmer. Allophane and imogolite occur not only in volcanic-ash soils but also in other environments. The conditions required for the precipitation of…
, which are condensation products ofprimary amines and aldehydes or ketones (RCH=NR ′,where R & R ′ represents alkyl and / or aryl substituents).This paper reviews uses of Schif f bases and their metalcomplexes as catalysts, in various biological systems,polymers and dyes, besides some uses as antifertilityand enzymat…
Nanocomposites, a high performance material exhibit unusual property combinations and unique design possibilities. With an estimated annual growth rate of about 25% and fastest demand to be in engineering plastics and elastomers, their potential is so striking that they are useful in several areas ranging from packagi…
Introduction to Magnetic Materials, 2nd Edition covers the basics of magnetic quantities, magnetic devices, and materials used in practice. While retaining much of the original, this revision now covers SQUID and alternating gradient magnetometers, magnetic force microscope, Kerr effect, amorphous alloys, rare-earth m…
A novel facile approach, sol-solvothermal process, is reported here for syntheses of nearly monodisperse inorganic nanocrystals (NCs), such as elementary metals, simple metal oxides, composite oxides, and selenides by using inexpensive metal salts and environmental friendly solvents as reactants without a further size…
The synthesis, morphology, optical properties and excited state dynamics of the Pr-doped NaYF4 nanocrystals in glass-ceramics are presented. The crystalline cubic NaYF4:Pr were synthesized by the controlled heat-treatment of multicomponent oxyfluoride glass based on silica and YF3. A series of the two-hour heat treatm…
Electrocatalytic activity of three-dimensional nickel-based layers in the hydrogen evolution reaction (HER) was investigated in an acidic medium. It was demonstrated that patterning of a glassy carbon electrode substrate with a 3D polyaniline (PANI) matrix is a convenient way of increasing the electrocatalytically act…
A convenient method was developed to fabricate colloidal crystal beads (CCBs) with tough mechanical strength, which was used as encoded carriers for multiplex bioassay. The latex particles used for the construction of the CCBs were designed with a rigid core PS and a elastomeric shell poly(MMA/EA/MAA), and were prepar…
The structural, optical and mechanical characterization of ZnO/PBDMA (poly(butanediolmonoacrylate)) nanocomposites is presented. ZnO nanoparticles are homogenously dispersed in the polymer matrix in transmission electron microscopy (TEM) images of ultramicrotomed sections. The size of the ZnO nanoparticles can be cont…
InSb nanowire arrays have been fabricated by direct current electrodeposition inside the nanochannels of anodic alumina membranes without subsequent annealing. After Au contacts were patterned to the nanowires using electron beam lithography, photoresponse studies were conducted. Absorbance peaks were also recorded fr…