Materials Literature
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Boron nitride (BN) exists in several polymorphic forms such as a-BN, h-BN, t-BN, r-BN, m-BN, o-BN, w-BN, and c-BN phases. Among them, c-BN and h-BN are the most common ceramic powders used in composites to ensure enhanced material properties. Cubic boron nitride (c-BN) has exceptional properties such as hardness, stre…
Abstract Systematic studies based on well‐controllable model systems aim at understanding how crystallization from a melt or solution of randomly coiled polymers leads to the formation of mono‐lamellar crystals. However, besides mono‐lamellar crystals also various other morphologically simple but yet not well understo…
Abstract We fabricated thin films of α - and γ -Fe 2 O 3 and Fe 3 O 4 at 400 °C under ambient (non-vacuum) conditions by using a mist chemical vapor deposition (mist CVD) method and investigated their structural and physical properties. We found that the structural phases of the films with preferred orientations depen…
The mode I fracture behavior of ordinary refractory materials is usually tested with the wedge-splitting test. At elevated temperatures, the optical displacement measurement is difficult because of the convection in the furnace and possible reactions of refractory components with the ambient atmosphere. The present pa…
In the context of a comprehensive campaign for the characterisation of transmutation fuels for next generation nuclear reactors, the melting behaviour of mixed uranium-americium dioxides has been experimentally studied for the first time by laser heating, for Am concentrations up to 70 mol. % under different types of…
We describe a facile strategy to synthesize hybrid nanocapsules with an oil core for hindering interactions between payloads and silica shell. Polycaprolactone/silica nanocapsules are synthesized by an interfacial sol-gel process occurring simultaneously with internal phase separation of the polymer produced by a mini…
In this work, we employed Yb 3+ and Er 3+ ions doped in a narrow bandgap oxide Bi 20 TiO 32 to fabricate Bi 20 TiO 32:Yb,Er, which can achieve near-infrared (NIR) responsive upconversion (UC) photocatalysis and produce a strong single red light. Because of the suitable bandgap of Bi 20 TiO 32, strong green UC emission…
Scaffolds supplemented with naturally derived materials seem to be a good choice in bone tissue engineering. This study aims to develop polyurethane (PU) nanofibers added with ylang ylang (YY) and zinc nitrate (ZnNO3) using the electrospinning method. Field emission scanning electron microscopy (FESEM) images showed t…
Purpose The simulation of eddy currents in laminated iron cores by the finite element method (FEM) is of great interest in the design of electrical devices. Modeling each laminate by finite elements leads to extremely large nonlinear systems of equations impossible to solve with present computer resources reasonably.…
Anodizing is one of the surface treatments for aluminum and its alloys. It is commonly used to increase corrosion resistance and mechanical properties. This technique is also applied for decorative purpose. Therefore, anodized aluminum alloys are widely used in many applications such as household structure, cell-phone…
The generation of highly reactive oxygen species (ROS) at room temperature for application in organic synthesis and wastewater treatment represents a great challenge of the current chemical industry. In fact, the development of biodegradable scaffolds to support ROS-generating active sites is an important prerequisite…
BaTiO 3 thin film was grown on a n-type silicon (100) single crystal substrate by high vacuum magnetron sputtering. The samples were annealed under vacuum conditions at 400, 500 and 600 °C, respectively. The photovoltaic effect in BaTiO 3 thin film was observed, and a high power conversion efficiency of 1.25% was achi…
The Poly-condensation of three-function cyanuric chloride monomer with dual-function different diamine monomer gave three different types of hyper brunched polymers. The entire prepared polymers have been identified using IR and 1 HNMR spectrum.
We demonstrate the suppression of light reflections at solid-solid interfaces in multilayer thin and thick films using interfacial nanostructures. The embedded nanostructures have subwavelength features and function as a gradient-index medium to eliminate Fresnel losses induced by refractive index mismatch between dis…
The decolorization of paintings, photographs, and artworks is a common phenomenon related to the oxidative degradation of color dyes reacting with oxygen or water molecules, which also causes a critical problem in organic light-emitting diodes (OLEDs). It is expected that the gas-impermeable property of graphene and h…
The ideal quantum confinement structure of monolayer semiconductors offers prominent optical modulation capabilities that are mediated by enhanced many-body interactions. Herein, we establish an electrolyte-gating method for tuning the luminescence properties that are in transition metal dichalcogenide (TMDC) monolaye…
Supramolecular amino acid and peptide hydrogels are functional materials with a wide range of applications, however, their ability to serve as matrices for enzyme entrapment have been rarely explored. Two amino acid conjugates were synthesized and explored for hydrogel formation. These hydrogels were characterized in…
While cellulose fiber reinforced polypropylene (PP) composites typically offer good stiffness and strength in combination with ecological benefits and a high potential for lightweight construction, they often require measures taken to improve their impact performance. In this work, the influence of different types of…
Thin multi-layered microwave absorbing structure design and development is a cutting edge technology for researchers. The present work has been attentively focused on the development of efficient multilayered microwave absorbing structure pertained to X-band (8.2 GHz to12.4 GHz). Graphene/epoxy nanocomposite material…
The step-by-step mechanism of citrate oxidation, silver ion reduction into atoms, and nucleation of nanoparticles by the Turkevich method are deduced from the gamma- and pulse-radiolysis yields of dicarboxy acetone (DCA), H 2, CO 2, and of silver ion reduction. Our results demonstrate that the stronger reductant is no…