Materials Literature
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Different sizes of graphene oxide with tunable fluorescence colours were prepared by continuous chemical oxidation with multi-walled carbon nanotubes (MWCNTs) as precursor. The photoluminescence of as-prepared GO was attributed to fluorescence according to their luminescence lifetimes. The as-prepared GO exhibit colou…
Polylactic acid (PLA) biodegradability is mostly claimed according to PLA biodegradation behaviour under aerobic composting conditions. However, waste materials containing PLA are frequently disposed of in municipal landfills, which are operated anaerobically. PLA anaerobic sludge digestion results are acquired to elu…
To compare the catalytic performances against daily start-up and shut-down (DSS) operations between co-precipitated (CP) and impregnated (IMP) Cu–Al–Ox catalysts for the water gas shift (WGS) reaction, in situ X-ray adsorption fine structure (XAFS) measurements, temperature-programmed reduction (TPR) profiles, X-ray d…
Boron Carbide is one the hardest and lightest material that is also relatively easier to synthesis as compared to other superhard ceramics like cubic boron nitride and diamond. However, the brittle nature of monolithic advanced ceramics material hinders its use in various engineering applications. Thus, strategies tha…
Separating the dependence of ZnO:Al thin-film texturization from deposition conditions is an important aspect for optimization of ZnO as light scattering, transparent contact in solar cells. The crater density and shape for a given polycrystalline ZnO:Al thin-film are shown to be controllable by altering the temperatu…
Abstract— Mura defects become visible in a 13.3‐in. TFT‐LCD using chip‐on‐glass (COG) packaging when the thickness of the glass substrate is decreased from 0.5 to 0.3 mm. Mura, the non‐uniform brightness in LCDs, is caused by COG packaging due to the mismatch of the coefficient of thermal expansion (CTE) and Young's m…
Nanowires with magnetic doping centers are an exciting candidate for the study of spin physics and proof-of-principle spintronics devices. The required heavy doping can be expected to have a significant impact on the nanowires' electron transport properties. Here, we use thermopower and conductance measurements for tr…
Raman spectroscopy investigations on nanocomposites obtained by dispersing halloysite within isotactic polypropylene are reported. A detailed analysis of the modifications of the regularity band associated to the polymeric matrix is presented. The Raman lines assigned to the polymeric matrix are broadened and weakened…
An integrated system of a microreformer and a carrier allowing for syngas generation from liquefied petroleum gas (LPG) for micro-SOFC application is discussed. The microreformer with an overall size of 12.7 mm × 12.7 mm × 1.9 mm is fabricated with micro-electro-mechanical system (MEMS) technologies. As a catalyst, a…
The acid failure of aluminium alloy in 2 M hydrochloric acid solution in the presence of Vernonia amygdalina extract was investigated using gasometric technique. Aluminium alloy coupons of dimension 4 cm by 1 cm were immersed in test solutions of free acid and also those containing extract volumes of 2, 3, 4 and 5 cm…
Here we demonstrated that Au can be more reactive than Ni in Au/Ni heteronanostructures and be etched out first by oxidization with HAuCl(4). Ligands were proven to determine the conversion pathways and structures of final products. These abnormal ligand-manipulated redox reactions may provide more possibilities for t…
X-ray photoelectron spectroscopy (XPS) is utilized to investigate a Si-diode during its operation under both forward and reverse bias. The technique traces chemical and location specified surface potential variations as shifts of the peak positions with respect to the magnitude as well as the polarity of the applied v…
Diamond-like carbon (DLC) nanofilms with thickness varied from under one hundred to a few hundred nanometers have been successfully deposited on alumina substrates by microwave plasma enhanced chemical vapor deposition (MW-PECVD) process. To obtain dense continuous DLC nanofilm coating over the entire sample surface,…
An easy synthesis route for conducting polypyrrole/β-cyclodextrin (PPy/β-CD) core-shell spheres has been developed. The conducting spheres were successfully synthesized via a simple stirring/ultrasonic treatment by mixing pyrrole monomer and β-CD in the ethanol/aqueous solution at room temperature. The resultant spher…
A tetranuclear Fe(III)(2)Mn(III)(2) compound was prepared using highly blocked precursors. The well-isolated molecular entity associated with appropriate magnetic anisotropy allows for single-molecule magnet behavior.
Well-defined tetrapod/Mitsubishi-like Pd nanocrystals with uniform dimensions were successfully synthesized by using Pd(acac)2 as a precursor and CO as a reducing agent in the presence of sodium acetate. Carboxylate anions such as acetate anions played an essential role in controlling the tetrapod morphologies of the…
Composite materials reinforced with vegetal fibers appear to be a good alternative for engineering applications. The objective of this work was to develop a 2D mechanical model for the vegetal fibers-reinforced composite materials. This approach gives more possibilities for combining the two different materials withou…
The Target/Moderator/Reflector (TMR) system at the Low Energy Neutron Source has a flexible design in order to accommodate research into the performance of neutron moderators in general and small-scale accelerator-driven neutron sources in particular. Since producing its first cold neutron beam in April of 2005, the L…
The effect of relative humidity on the mechanical properties of poly(vinyl alcohol) (PVOH) micro and nanocomposites was evaluated. Two different commercial fillers (microcellulose and bentonite) were used as reinforcement. PVOH and PVOH composite films were prepared by casting technique. The incorporation of microcell…
The wave method for free vibration analysis of single-wall nanotube conveying fluid is proposed in this paper. The lateral vibration model of nanotube conveying steady flow is derived based on the Timoshenko beam theory. The control partial differential equations are dealt with Fourier transform and the wave form solu…