Aluminum, a non-redox-active metal is, nevertheless, a pro-oxidant both in in vitro preparations and in vivo. It facilitates both superoxide- and iron-driven biological oxidation by mechanisms that remain to be resolved. More than 10 years ago Fridovich and colleagues suggested that the facilitation of superoxide-driven biological oxidation by aluminum was due to an interaction between the meta...

The tunneling magnetoresistance sTMRd of thin dielectric tunnel barriers that are sandwiched between pairs of ferromagnetic metal thin films is highly sensitive to the barrier layer atomic scale thickness, the uniformity in thickness, and the composition. Widely used AlOx barriers are formed by the oxidation of 1–2 nm thick aluminum layers vapor deposited onto one of the ferromagnetic metal ele...

AbstractIn this paper, we investigate effect of Fe–intermetallic compounds on plastic deformation of closed-cell composite Aluminum Foam as filler of thin-walled tubes. However, deformation of the Aluminum foam-filled thin-walled tubes as crushed-box will be presented in Part (II). Composite foams of AlSi7SiC3 and AlSi7SiC3-(Fe) as closed cell were synthesized by powder metallurgy foaming metho...

Abstract We present an experimental study of the dynamics shocks generated by interaction a double-spot laser in different kinds targets: simple aluminum foils and foam–aluminum layered targets. The experiment was performed using Prague PALS iodine working at 0.44 μm wavelength irradiance few 10 15 W/cm 2 . Shock breakouts for pure Al foam-Al targets have been recorded time-resolved self-emissi...

The temperature distribution across a flat heat pipe sandwich structure, subjected to an intense localized thermal flux has been investigated both experimentally and computationally. The aluminum sandwich structure consisted of a pair of aluminum alloy face sheets, a truncated square honeycomb (cruciform) core, a nickel metal foam wick and distilled water as the working fluid. Heat was applied ...

Sub-wavelength diameter holes in thin metal layers can exhibit remarkable optical features that make them highly suitable for (bio)sensing applications. Either as efficient light scattering centers for surface plasmon excitation or metal-clad optical waveguides, they are able to form strongly localized optical fields that can effectively interact with biomolecules and/or nanoparticles on the na...

Abstract The use of metal foams for damping vibrations mechanical structures has found interesting applications in machine tools and its components. Indeed, undesired vibration is one the most detrimental causes that limit performance terms maximum achievable material removal rate MRR. Although positive results were presented some research works, a methodology predicting properties such materia...

Accurate information on heat transfer and temperature distribution in metal foams is necessary for design and modeling of thermal-hydraulic systems incorporating metal foams. The analysis of this process requires determination of the effective thermal conductivity as well as the thermal contact resistance (TCR) associated with the interface between the metal foams and adjacent surfaces/layers. ...

In this study, the production and characterization of open-cell composite metal foam using replica method, also known as polymer impregnation, was investigated. Composite powders were prepared by alloying in a planetary ball mill for 1 hour AA7075 aluminum powder 10% weight B4C powder. Characterization morphology analysis produced performed XRD SEM/EDS analyses. As result analyses, it observed ...