Materials Literature
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Gold nanoparticles were stabilized by a polyaniline:poly(sodium 4-styrenesulfonate) (PANI:PSS) matrix and readily dispersed in water over a wide range of pH. In contrast to nanoparticles passivated by alkanethiolates that formed a compact capping layer on the nanoparticle surface, the PANI:PSS-Au nanocomposites exhibi…
The article deals with the analysis of the wing design made almost entirely of composite structures for a small plane to a maximum take-off weight of 2000 kg. All- composite wings provide less weight for airplane fuselage so they improve the flight performance and flight economy. Also, implementation of the magnetic m…
Using "Generally Recognized as Safe" (GRAS) materials for assembly, edible polyelectrolytes (EPL/PGA) are coated on sugar (maltotriose)–dextran particles and crosslinked (left). Cargo-loaded hollow capsules are created by dissolution of the sugar template (right).
Carbon microcoils (CMCs) were deposited onto Al 2 O 3 substrates using C 2 H 2 /H 2 as source gases and SF 6 as an incorporated additive gas in a thermal chemical vapor deposition system. CMC‐polyurethane (PU) composites were obtained by dispersing the CMCs in the PU with a dimethylformamide additive. The electromagne…
ZnO hierarchical structure has been synthesis by using chemical routs method. Hydra zinc nitrate, oleic acid, ethanol was used as row materials for the chemical reaction in the presence of NaOH. The Reaction took place at room temperature under stirrer. The prepared ZnO powder is collected and mixed with PVA to make a…
Photochromism of monothiodibenzoylmethane has been studied in a number of environments at different temperatures. Direct laser irradiation of a sample located in the NMR magnet allowed in situ monitoring of the phototransformation products, determining their structure, and measuring the kinetics of the back reaction.…
A simple and efficient method has been developed for the switchable synthesis of directly linked meso-brominated Ni(II) porphyrin dimers through PIFA-BF3·Et2O mediated oxidative coupling. The respective syntheses of meso-meso or meso-β singly, doubly, and triply linked porphyrin dimers can be easily realized with the…
Crystallization is a highly demanding and time-consuming task that causes a real bottle-neck in basic research. Great effort has been made to understand the factors and parameters that influence this process and to finely tune them to facilitate crystal growth. Different crystallization techniques have been proposed o…
A disordered chiral conglomerate, the random grain boundary (RGB) phase, has been observed below the smectic A liquid crystal phase of an achiral, hockey-stick molecule. In cells, the RGB phase appears dark between crossed polarizers but decrossing the polarizers reveals large left- and right-handed chiral domains wit…
Gold nano-clusters were grown on chemically modified graphene by direct sputter deposition. Transmission electron microscopy of the nano-clusters on these electron-transparent substrates reveals an unusual bimodal island size distribution (ISD). A kinetic Monte Carlo model of growth incorporating a size-dependent clus…
The aim of these notes is to introduce the experimental methods and theoretical works in the domain of magnetic and resonant x-rays scattering on single crystals to investigate the electronic and magnetic long range order in strongly correlated electron systems. We highlight the role of the x-rays polarization analysi…
We report a method for the fabrication and selective functionalization of the internal and external surfaces of high-aspect-ratio hollow silicon dioxide (SiO2) micropillar arrays. The strategy enables independent surface reactions with no cross-contamination. The dual-functionalization is carried out during the fabric…
Colloidal quantum dots are luminescent long-lived probes that can be two-photon excited and manipulated by a single laser beam. Therefore, quantum dots can be used for simultaneous single molecule visualization and force manipulation using an infra-red laser. Here, we show that even a single optically trapped quantum…
Our study on biological interaction of silicon nanocrystals (a) and nanodiamonds (b) with cells encourages their use in human medicine.
Effects of defect structures on polarization hysteresis properties have been investigated for Mn-doped BaTiO3 ceramics. The polarization hysteresis loops are found to strongly depend not only on the oxygen vacancy concentration ([VO••]) but also on the majority-acceptor (Mn3+) concentration. Density functional theory…
Views Icon Views Article contents Figures & tables Video Audio Supplementary Data Peer Review Share Icon Share Twitter Facebook Reddit LinkedIn Tools Icon Tools Reprints and Permissions Cite Icon Cite Search Site Citation M. T. Ramesan, Abdu Raheem V. P., Jayakrishnan P., P. P. Pradyumnan; Acrylonitrile butadiene rubb…
This paper describes the mechanical properties of the composite materials produced using long bamboo fiber and bamboo powder. Bamboo fiber and powder can be hot press-molded much like plastic materials, and the use of these materials in place of plastic products would reduce the environmental impact of extensive plast…
We discuss the simulation of a hyperspectrometer based on the use of linear variable filters. The possibility of recovery of the image spectral pixels through the solution of the integral equation is considered. Estimates of the scattering spot size as a function of the spectral filter parameters are obtained. The num…
Various compositions of Al–Ga–Pd–Re icosahedral quasicrystals (QCs) were synthesized using arc-melting and annealing methods, and their thermoelectric properties were investigated. With the same trend in the Seebeck coefficient as Al–Pd–Mn and Al–Pd–Re QCs, the Al–Ga–Pd–Re QC has a similar pseudogap electronic structu…
On the basis of transformation thermodynamics, a thermal conductivity expression for cylindrical thermal cloak with arbitrary cross section is derived. Based on the expression, we design a thermal cloak with a non conformal section profile. Results of full wave simulation show that the cloak possesses heat protection…