This paper reports a new technique that combines the features of Accumulative Roll Bonding (ARB) and Asymmetric Rolling (AR). This technique has been developed to enable production of ultra-thin bimetallic foils. Initially, 1.5 mm thick AA1050 and AA6061 foils were roll-bonded using ARB at 200°C, with 50% reduction. The resulting 1.5 mm bimetallic foil was subsequently thinned to 0.04 mm throug...

Aluminium foil is widely accepted as being one of the best barrier materials in flexible packaging, even in the face of many new and up-and-coming high-barrier plastic layer combinations, copolymers, blends or nano-composites. Besides high thermal conductivity, which facilitates enhanced converting and sealing performance, other key criteria that distinguish “converter foil” from competing mate...

Many fish depend primarily on their tail beat for propulsion. Such a tail is commonly modeled as a twodimensional flapping foil. Here we demonstrate a novel experimental setup of such a foil that heaves and pitches in a soap film. The vortical flow field generated by the foil correlates with thickness variations in the soap film, which appear as interference fringes when the film is illuminated...

Impact of the in-situ rise of hydrogen partial pressure on graphene shape evolution during CVD growth of graphene Zewdu M.Gebeyehu, Aloïs Arrighi, Marius V. Costache, Clivia M. Sotomayor-Torres, Maria J. Esplandiu, Sergio O. Valenzuela Methods Copper foil preparation A 25 μm thick copper foil (99.8%, Alfa Aesar, stock #13382) was cleaned in acetone and isopropyl alcohol (IPA) for 10 min each to...

Two-dimensional staggered silver nanosheets (NSs) immobilized on a flat aluminium foil have been synthesized by keeping the underside surface of the foil in contact with the solution of normal silver mirror reaction. The NSs are hundreds of nanometres to several micrometres in dimensions and tens of nanometres in thickness. The effects of the aluminium foil, a chemically active substrate, on th...

The influence of plasma density scalelength on the production of MeV protons from thin foil targets irradiated at Iλ = 5x10Wcm has been studied. With an unperturbed foil, protons with energy > 20MeV were formed in exponential energy spectrum with a temperature 2.5± 0.3 MeV. When a plasma with a scalelength of 100μm was preformed on the back of the foil the maximum proton energy was reduced to <...

PURPOSE To create a user friendly, accurate, real time computer simulator to facilitate the design of dual foil scattering systems for electron beams on radiotherapy accelerators. The simulator should allow for a relatively quick, initial design that can be refined and verified with subsequent Monte Carlo (MC) calculations and measurements. METHODS The simulator consists of an analytical algo...

Tuna are fast, economical swimmers in part due to their stiff, high aspect ratio caudal fins and streamlined bodies. Previous studies using passive caudal fin models have suggested that while high aspect ratio tail shapes such as a tuna's generally perform well, tail performance cannot be determined from shape alone. In this study, we analyzed the swimming performance of tuna-tail-shaped hydrof...

The technically pure copper is being replaced by aluminium as conductive material in electrical transformers for power systems. This evolution brings new manufacturing challenges. One major difficulty is the limited weld ability and non-acceptable residual deformations of the aluminium, when welded by fusion arc welding processes. The Friction Stir Welding (FSW) was selected for evaluation cons...