Materials Literature
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Si and Ge nanowires have attracted widespread interest due to their suitability for photovoltaic, nanoelectronic, sensing and energy storage applications. As a result, a variety of synthetic protocols have emerged which include chemical vapour deposition and solution phase approaches. Early solution based approaches w…
The mechanical properties of polyvinyl alcohol (PVA) films prepared by evaporating water from freeze/thaw cycled gel were investigated as a function of the number of freeze/thaw cycles. The maximum stress of the PVA film prepared by freeze/thaw cycling was larger than that prepared without the freeze/thaw cycle proces…
The rich behaviors of high-speed mechanical contacts at the nanoscale have been studied. The seldom observed elastic-plastic transition governed by Hertz and Thornton models has been clearly unveiled, the origins of the hardening effect and the deformation mechanism of nanoscale plasticity have been discussed in terms…
We present two thermoresponsive water soluble copolymers prepared via free radical statistical copolymerization of N-isopropylacrylamide (NIPAm) and of oligo(ethylene glycol) methacrylates (OEGMAs), respectively, with a solvatochromic 7-(diethylamino)-3-carboxy-coumarin (DEAC)-functionalized monomer. In aqueous soluti…
In this study, integrity and corrosion properties of the Pb-MnO2 composite anodes fabricated through single-action powder pressing were investigated. The effects of the MnO2 content on the properties of the composite anodes were studied and compared with those of the Pb and Pb-Sn-Ca anodes. Galvanostatic experiments (…
The application of an Isopropanol(IPA)-free potassium hydroxide (KOH) solution was evaluated in order to prepare random pyramids on as-cut crystalline n-type Si wafers to reduce reflection losses of substrates for high-efficiency hetero-junction solar cells. The influence of saw damage removal and texturization proces…
In the present work, thermogravimetric analysis (TG) was employed in order to investigate the thermal degradation of electronic waste under pyrolysis and combustion conditions. Three materials, namely keyboard, telephone wire, and printed circuit board (PCB) were studied and compared with each other. TG experiments we…
Jute is generally not dyed with reactive dye though it is a cellulosic fiber. Reactive dye is extensively used to dye cotton, viscose and other cellulosic fibers whereas jute is dyed with basic dye. This paper presents a novel approach to dye the jute fiber with reactive dye after treating with chitosan. Jute fabric w…
Mesocrystals have attracted considerable attention due to their novel structure and special property, which are different from traditional polycrystals and single crystals. In this work, unique anatase TiO2 mesocrystals along the [001] orientation were successfully synthesized on a large scale via a facile one-pot sol…
A new method combining surface coating with chemical grafting to prepare poly(p-phenylene benzobisoxazole) fiber–silica–graphene oxide (PBO–SiO2–GO) hybrid fiber was proposed. The chemical composition, surface morphology, surface roughness (Ra), surface energy, interfacial shear strength (IFSS), single filament tensil…
Quantum dots of Cd(Se,S) and fluorescent magnetic nanocomposites (Cd(Se,S)–magnetite) were used as photocatalytic agents in the photodegradation of methylene blue (MB) under UV irradiation at pH 6.5. Quantum dots and magnetic nanocomposites were characterized by X-ray diffraction (XRD), UV-Vis, photoluminescence and F…
The fluorescence of Ru(phen)3Cl2 (tris(1,10-phenanthroline)ruthenium(II) dichloride) can be effectively quenched with the addition of graphene oxide in aqueous solution, due to the formation of a GO–Ru hybrid. A fluorescence enhancement of approximately 50 times can be observed after the addition of a certain amount o…
Inverted-pyramid silicon nanopore arrays are realized with a well-controlled, three-step, anisotropic wet etching process with different KOH bath temperatures. The influence of etchant concentration and temperature on the etching rate is investigated. Nanopore arrays with an average size of 100 nm and individual nanop…
Hydrothermal reaction of cadmium salt, 3,3′,4,4′-diphenylsulfonetetracarboxylic acid (H4dpstc) and 1,10-phenanthroline (phen) under different pH conditions have afforded four novel supramolecular complexes, in which the pH value of the reaction solution plays a crucial structure-directing role. [Cd(H2dpstc)(phen)]n (1…
Polyamide (PA) resin is anticipated to be a beneficial matrix of carbon fiber reinforced thermoplastics (CFRTP) because of its low cost and good bonding property to the carbon fiber. However, the well-known highly hygroscopic nature of PA demands that the influence of water absorption on the mechanical properties of c…
A simple and sensitive 3D origami multiple electrochemiluminescence immunodevice based on a novel silver nanoparticles modified porous paper working electrode as a sensor platform and multi-labeled nanoporous gold-carbon spheres as tracers has been demonstrated for the first time.
Morphologically diverse carbon nitride micro-/nanoclusters (nanowires, nanoribbons, and nanosheets) were synthesized by polycondensation of cyanamide on diatom substrates. The formation mechanism is speculated to be one dimensional growth and two dimensional extensions on diatom frustules with high curvature. Platinum…
Constructing novel materials with a hierarchical structure has become an increasingly hot research topic, because the hierarchical structures have wide potential applications in the fields of bionics, electronics, photocatalysis, solar cells, and lithium ion batteries. In this paper, we report on the fabrication of rh…
Novel ABC triblock copolymers containing hydrophobic, imidazolium ionic liquid (IL)-based ionic, and non-charged hydrophilic blocks were synthesized by direct sequential, ring-opening metathesis polymerization (ROMP) of three chemically immiscible norborene monomers. The resulting ABC triblock copolymers were found by…
Electron lifetime in mesoporous nanostructured rutile TiO2 photoanodes, synthesized via a simple, cost-effective, low temperature (50-55 °C) wet chemical process, annealed at 350 °C for 1 h and not employing any sprayed TiO2 compact layer, was successfully tailored with 0.2 mM TiCl4 surface treatment that resulted in…