Insertion of isatin molecules into the nanostructure of palygorskite
Heat treatment driven isatin inserted into the nanostructure of palygorskite, endowing the hybrid with good stability.
Materials Literature
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Preparation and Gas Barrier Characteristics of Polysilazane-Derived Silica Thin Films Using Ultraviolet Irradiation
The gas barrier film formation technique using simultaneous photo-irradiation and heat-treatment has been researched on alicyclic polyimide film coated with a polysilazane solution. A fine SiO2 thin film on polyimide film was formed at low temperatures, which greatly improved the substrate’s gas barrier characteristic…
Novel synthesis of highly porous spinel cobaltite (NiCo2O4) electrode material for supercapacitor applications
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 A. Nirmalesh Naveen, S. Selladurai; Novel synthesis of highly porous spinel cobaltite (NiCo2O4)…
Quantum Hall effect of Haldane model under magnetic field
Haldane model can realize the anomalous quantum Hall effect (QHE) without Landau levels (LLs) and serves as a prototype of the quantum spin Hall effect. In this paper, we study the QHE of Haldane model under magnetic field with magnitude such that the magnetic flux in a plaquette is commensurate with the lattice struc…
Comparative Study on Electronic, Emission, Spontaneous Property of Porous Silicon in Different Solvents
Luminescent porous silicon (Psi) fabricated by simple chemical etching technique in different organic solvents was studied. By quantifying the silicon wafer piece, optical properties of the Psi in solutions were investigated. Observation shows that no photoluminescence light of Psi in all solvents is emitted. Morpholo…
Effect of Addition of Boron and Nitrogen on the Corrosion Resistance of Modified 9Cr-1Mo Ferritic Steel
Electrochemical noise (EN) studies were conducted on three different sets of modified 9Cr-1Mo steels containing different contents of nitrogen and boron in air-saturated 0.05 M NaCl solution at 1 Hz sampling frequency for 72 h continuously, in order to study the metastable pitting corrosion behaviour of these steels.…
NiOx Schottky-gated ZnO nanowire metal–semiconductor field effect transistor: fast logic inverter and photo-detector
We demonstrate a high performance ZnO nanowire (NW) metal–semiconductor field effect transistor (MESFET) using semi-transparent NiOx as a Schottky gate (SG), which shows excellent carrier mobility, on/off ratio, and sub-threshold slope of 301 cm2 V−1 s−1, 106, and 60 mV per decade, respectively. Based on the MESFET de…
Tailoring porosities and electrochemical properties of composites composed of microfibrillated cellulose and polypyrrole
The porosities of composites of polypyrrole and nanocellulose can be tailored from 30 to 98% with ∼10% increments enabling the electrochemical behavior of the materials to be readily controlled.
Synthesis, crystal structures and magnetic behaviour of four coordination compounds constructed with a phosphinic amide-TEMPO radical and [M(hfac) 2 ] (M = Cu II , Co II and Mn II )
In the present work we describe the synthesis, crystal structures and magnetic properties of four coordination compounds obtained by assembling a new phosphinic amide containing the TEMPO moiety, 1-piperidinyloxy-4-[(diphenylphosphinyl)amino]-2,2,6,6-tetramethyl radical (dppnTEMPO), with [M(hfac)2] building blocks (M…
Amphiphilic block copolymer micelles with fluorescence as nano-carriers for doxorubicin delivery
Well-defined and nontoxic core–shell polymeric micelles, containing fluorescence units, were employed for efficient drug delivery of doxorubicin (DOX). The self-assembled structures were generated from triblock copolymers of poly(ε-caprolactone)-block-poly(glycidyl methacrylate)-block-poly(poly(ethylene glycol)methyl…
Excellent friction-reducing performance of superhydrophobic steel surface in dry sliding
Superhydrophobic micro/nano-engineered steel surfaces with friction-reducing properties were fabricated by the combination of chemical etching and stearic acid coating.
Non-equilibrium segmental dynamics driven by multiwall carbon nanotubes in PS/PVME blends
The present paper discusses the effect of multiwall carbon nanotubes (MWNTs) on the structural relaxation and the intermolecular cooperativity in dynamically asymmetric blends of PS/PVME (polystyrene/poly(vinyl methyl ether)). The temperature regime where chain connectivity effects dominate the thermodynamic concentra…
Ab Initio Study of Water Related Defects in Cr 2 O 3 and the Consequences for the Stability of Passive Films of Stainless Steels
Thermodynamic stability of Cr 2 O 3 point defects in aqueous environments is studied using density functional theory (DFT) calculations with varying electrolyte pH and electrode potential. In reducing conditions, the most stable defects are found to be oxygen vacancies, whereas in oxidizing conditions, chromium vacanc…
Pickering emulsion engineering: fabrication of materials with multiple cavities
Materials with millimeter to centimeter dimensions containing multiple cavities were fabricated based on Pickering emulsion engineering.
Half-metallicity in a new Heusler alloy Ti2FeSn: A density functional study
First-principles calculations based on density functional theory for a new Heusler compound Ti2FeSn have been performed using the self-consistent full-potential linearized augmented plane wave method. The results showed that the Ti2FeSn Heusler alloy was a half-metallic ferrimagnet. The obtained total magnetic moment…
Graphitic nanoparticles from thermal dissociation of camphor as an effective filler in polymeric coatings
Formation of uniformly-sized water soluble graphitic carbon nanoparticles from the soot obtained by the incineration of camphor.
Molecular force transfer mechanisms in graphene oxide paper evaluated using atomic force microscopy and in situ synchrotron micro FT-IR spectroscopy
The mechanical properties of graphene oxide (GO) paper are critically defined both by the mechanical properties of the constituent GO sheets and the interaction between these sheets. Functional carbonyl and carboxyl groups decorating defects, expected to be predominantly sheet edges of the GO, are shown to transfer fo…
The photocathodic properties of a Pb(Zr 0.2 Ti 0.8 )O 3 wrapped CaFe 2 O 4 layer on ITO coated quartz for water splitting
Pb(Zr(0.2)Ti(0.8))O3 wrapped CaFe2O4 particles were constructed on ITO coated quartz as a photocathode for efficient water splitting. A photocurrent of 152 μA cm(-2) was obtained under zero bias vs. Ag/AgCl and 100 mW cm(-2) with the assistance of positive poling and Ag decoration.
Supercapacitors Based on Propylene Carbonate with Small Addition of Different Sulfur Containing Organic Solvents
The electrochemical characteristics of electrical double layer capacitors consisting of the mainly microporous titanium carbide derived carbon (TiC-CDC) electrodes in 1 M (C 2 H 5 ) 3 CH 3 NBF 4 solutions in 4-methyl-1,3-dioxolan-2-one, (propylene carbonate (PC)) and mixtures of PC with diethyl sulfite (DES) or 2-oxo-…
Spark Plasma Sintering of Boron Carbide Ceramics Using Different Sample Geometries and Dimensions
B4C ceramics were fabricated by spark plasma sintering technique at 1700 C1800 C for 5 min under applied pressure of 50 MPa under vacuum atmosphere. Two dierent grades of B4C powder from H.C. Starck Company namely HP grade and HS grade were used in all related experiments. Eect of sample geometry and dimensions as wel…