Materials Literature
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Performances of organic distributed feedback (DFB) lasers made from holographic polymer dispersed liquid crystal (HPDLC) transmission gratings were greatly improved by replacing common laser dye with organic semiconductor poly(2-methoxy-5-(2′-ethyl-hexyloxy)- p -phenylenevinylene) (MEH-PPV) as the gain medium.
Depth resolved X-ray photoelectron spectroscopy (XPS) combined with a 25 μm liquid jet is used to quantify the spatial distribution of 3 nm SnO2 nanoparticles (NPs) from the air-water interface (AWI) into the suspension bulk. Results are consistent with those of a layer several nm thick at the AWI that is completely d…
A redox-responsive chiral supramolecular gel based on coumarin-tailed cholesterol linked with disulfide was reported.
How stress or strain imparts mobility to glasses is a scientific issue linking ideas of jamming and the glass transition across colloids, granular materials, polymers, and molecular glasses. Here, we address for the first time how stress applied during vitrification, formation of the glassy state by a temperature quen…
Anode-supported micro-tubular solid oxide fuel cells (AS-MT-SOFCs) have been regarded as promising energy conversion devices. In our group, dip-coating and co-sintering techniques were used in order to reduce the fabrication cost. In this paper, micro-tubular SOFC single cells (Φ5mm*L50mm) and their stacks are fabrica…
The block copolymers (BCs), as structure-directing agents, co-assembling with nanoscale inorganic additives is an important route to fabricate nanostructured hybrid materials. In this work, we present a facile approach to fabricate hybrid micelles composed of BCs and polyoxometalates (POMs), in which the POM clusters…
A ZnO:Al (10%) thin film was prepared on GaAs(100) substrate by using a pulsed filtered cathodic vacuum arc deposition (PFCVAD) system. The ZnO:Al thin film was thermally annealed for 1 h at 2 different temperatures in air. The film structure was investigated as a function of annealing temperature by X-ray diffraction…
Carbon dioxide (CO2) corrosion is one of the most significant forms of attack in the oil and gas production and transportation systems. Corrosion inhibitors have been widely used in an effort to reduce the detrimental effect of the corrosion process. Different types of corrosion inhibitors have been applied for this p…
Inorganic nanoparticles (NPs) confined in carbon nanotubes (MWCNTs) will provide significantly improved performances compared to their counterparts supported on the outer walls of MWCNTs. In this paper, supercritical CO2 (sc-CO2) was used as an impregnation medium to assist the inorganic Ru precursor into the inner po…
In a series of thiaaceneporphyrinoids, their conformers exhibit macrocyclic π-conjugation pathways controlled by a dihedral angle between the porphyrin framework and acene planes. Conformational equilibria significantly affect the photophysical properties of these macrocycles.
In this research, a new titanium tanning agent (TMW/2) obtained from the wastes of the metal industry was investigated in the production of chromium free eco-leather, by experimenting with various amounts of tanning agent and comparing the physical and chemical properties of the tanned leathers. The tanning process wa…
Novel alginate‐gelatin hybrid nanoparticles were fabricated using single oil in water (O/W) emulsification techniques. Physicochemical property of the particle was characterized using scanning electron microscopy and Fourier’s transmission infrared spectroscopy. Particle size was determined using zeta potential metast…
In this work we report an experimental study on the surface activity and the collective behaviour of colloidally stable Janus-like silver particles at the air-water interface. The colloidal stability of silver nanoparticles has been enhanced using different capping ligands. Two polymers coated the silver particles: 11…
Multiple polymer particles encapsulated in a polymer shell are applied in electrophoretic ink. We demonstrate a simple one-step polymerization of polymer capsules containing small particles (rattle-like particles). In the obtained capsules, encapsulated particles independently dispersed and moved in response to the el…
Condensation of N-2-pyridylimidoyl-2-pyridylamidine with S2Cl2 affords fused N-bridgehead-1,2,5-thiadiazolium salts, which can be converted to 3,5-bis(2-pyridyl)-4-hydro-1,2,4,6-thiatriazine (Py2TTAH). Oxidation of Py2TTAH with iodine yields the corresponding 1,2,4,6-thiatriazinyl radical, identified by EPR spectrosco…
We present results from computer simulation and mode-coupling theory of the glass transition for the nonequilibrium relaxation of stresses in a colloidal glass former after the cessation of shear flow. In the ideal glass, persistent residual stresses are found that depend on the flow history. The partial decay of stre…
The utility of carbon materials in applications as diverse as drug delivery and photocatalysis is often undermined by the complexity of their surface chemistry; different sources of carbon give rise to a varied mixture of functional groups and hence different properties. Considerable efforts have been made to identify…
Classical molecular dynamics simulations have been used to investigate the local and medium range structure of Ce-containing silicophosphate glasses widely used in optical and photonic devices because of their enhanced UV absorption and radiation damage resistance properties. New Ce(3+)-O and Ce(4+)-O parameters for a…
Barium titanate thin films were prepared by spin coating deposition technique of an acetic precursor sol and sintered at 750, 900 and 1050?C. Phase composition of the obtained thin films was characterized by X-ray diffraction and Raman spectroscopy. Their morphology was analysed by scanning electron microscopy and ato…
X-ray absorption near-edge structure (XANES) spectroscopy has been applied to characterize the phase evolution of Ag–TiO2 films subjected to annealing treatments up to 1000 °C. Silver has been theoretically predicted as a rutile promoter in anatase powders lowering the transition temperature, however, no systematic st…