Materials Literature
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Nanocomposites are a promising new class of materials for the mechanical components of microstructures such as microactuators and microresonators. This work presents a combination of theoretical and experimental investigations of the utility of carbon nanotube-reinforced composites for designing microstructures. In th…
Using SrCl2·6H2O and Na2CO3 as the main raw materials and adding different complexons as modifiers with simple co-precipitation method, SrCO3 crystals with distinct mor- phologies like spherical, bundle-like, overlapping plate-like, hexagonal star-like, dumbbell-like, etc. can be synthesized in the ethanol-water mixtu…
Nanocrystals of up-conversion phosphor，rare earth-doped sodium yttrium fluoride were prepared by hydro-thermal method for the application in thin film solar cells. Effect of Yb3+ and/or Er3+ doped materials on the crystal structure and optical properties were studied. Up-conversion materials with Yb3+/Er3+ co-doped ab…
An asymptotic analysis of interfacial stability with the surface tension anisotropy is derived for directional solidification of alloys. The zero and first order solution for multi-scale and the zero order solution for single-scale are obtained. The dispersion relation adapted to all wave-length is presented by combin…
Representative magnetoelectric (ME) material Cr 2 O 3 films were prepared on R -cut sapphire ( R -Al 2 O 3 ) and SrTiO 3 (STO) substrates with the aim of applying them in perovskite oxide electronic devices. Cr 2 O 3 thin films were deposited using the DC–RF hybrid magnetron sputtering system at different substrate te…
A recursive Green's function method is employed to calculate the density-of-states, transmission function, and current through a 150 layer (3,3) armchair nanotorus (1800 atoms) with laterally attached metallic leads as functions of relative lead angle and magnetic flux. Plateaus in the transmissivity through the torus…
As the aviation industry strives to cut its emissions, the 'lightweighting' of aircraft components is a priority. This includes engine components. Marcus Finley reports.
The flow of oil‐in‐water emulsions through a constricted capillary tube was analyzed by experiments and theory. The experiments consisted of flow visualization and pressure drop measurements of the flow. A number of different emulsions were prepared using synthetic oils and deionized water. The average drop size varie…
Nd0.7Sr0.3MnO3 ceramics of perovskite-type were respectively prepared by solid-state reaction and high-energy ball milling with post heating-treatment. The samples obtained using these methods show a great of difference in electrical transport despite having the same crystallographic structure, similar grain size and…
This paper discusses the non-trivial issues associated with calculating the heat spreading from a heat source into a thermally conducting body subject to boundary conditions in steady state. It is argued that problems arise with the interpretation of heat spreading effects due to a misconception about the meaning of o…
The analysis of deformation process of an anisotropic ductile material (mainly metals) subjected to impact loading is presented. The problem is formulated within the theory of continuum mechanics and in the framework of thermodynamics. The macroscopic anisotropy is induced by the evolution of microstructure. Experimen…
The annealing phenomena have been observed on the pellets of Se90In10 chalcogenide glass by annealing at 50 C and 100 C for 2h. The structure and effective thermal conductivity of as prepared and annealed samples of Se90In10 chalcogenide have been investigated by XRD and transient plane source (TPS) method, respective…
Increasing awareness on the environmental safety coupled with new rules and regulations has forced manufacturers to consider biodegradable materials for their products.The aim of this work was to investigate tensile properties and water absorption behavior of biocomposites from kenaf bast fiber and poly(lactic acid).T…
Experimental investigation was performed with a 1064-nm, 10-ns Nd:YAG laser to determine the effects of the surface hydrogen acid etching on laser damage, compared with damage of conventionally polished surface. The investigation was helpful for us to understand the negative effects of Nd-doped phosphate glass surface…
A versatile and low-cost single-beam self-referenced phase-sensitive surface plasmon resonance (SPR) sensing system with ultra-high resolution performance is presented. The system exhibits a root-mean-square phase fluctuation of +-0.0028 angle over a period of 45 min, i.e. a resolution of +-5.2*10^(-9) refractive inde…
Partial discharges (PDs) are a cause of concern in power systems. Many detection methods and analysis techniques for PDs are available, such as UHF detection, conventional IEC 60270 method, acoustic detection, etc. This paper focuses on analysing signals obtained by the UHF method in order to distinguish between diffe…
Nanoparticles of aluminum-substituted manganese zinc ferrites,<mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML"><mml:mrow><mml:msub><mml:mrow><mml:mtext>Mn</mml:mtext></mml:mrow><mml:mrow><mml:mn>1.05</mml:mn></mml:mrow></mml:msub><mml:msub><mml:mrow><mml:mtext>Zn</mml:mtext></mml:mrow><mml:mrow><mml:mn>0.05</m…
This study evaluates the possibility of using the mechanical properties of fabric measured by FAST instruments integrated with the thermal absorption measured by a Zweigle T675 Alambeta to predict the combination of primary handles connected to the feeling of softness and warmth. To achieve this objective, thermal and…
Abstract Selective fluorescence labelling of oxidized cellulose functionalities followed by GPC‐MALLS was used to get a deeper insight into ink‐induced degradation processes. As the method is very sensitive towards oxidation and molecular weight changes, slight variations at the very beginning of aging processes, e.g.…
The navel, which is one of the most important items in the OE - rotor spinning system, influences yarn quality because of its surface design and structure. In this work, four different blends (polyester/cotton and polyester/viscose) and four different navels were used to produce rotor-spun yarns with the same count un…