We report here on the fabrication of porous anodic alumina PAA films from commercially available impure aluminum foil. While the expensive ultrapure PAA films are restricted to potential applications in nanoelectrophotonics, the impure PAA films are more suitable for large-scale applications, such as in catalysis and filtration. The anodization current behavior and chemical composition of the r...

Tensile and fatigue properties of as-rolled and annealed polycrystalline Cu foils with different thicknesses at micrometer scale are investigated. Uniaxial tensile testing shows that with decreasing foil thickness the uniform elongation decreases for both as-rolled and annealed foils, while the yield strength and ultimate tensile strength increase for as-rolled foils, but those decrease for the...

This paper explores and articulates an alternative to the two main approaches that have come to predominate in contemporary philosophical discussions of skepticism. These we may call the ̳Foil Approach‘ and the ̳Bypass Approach‘ respectively. On the Foil Approach, skepticism is treated as a problem to be solved, or challenge to be met, or threat to be parried; skepticism‘s value, insofar as it ...

Ten-millijoule 35-femtosecond laser pulses interact with a cell of helium or neon that extends from a focusing lens to an exit foil near the laser focus. High harmonic orders in the range of 50 to 100 are investigated as a function of focal position relative to the exit foil. An aperture placed in front of the focusing lens increases the brightness of observed harmonics by more than an order of...

We present the system nFOIL. It tightly integrates the naı̈ve Bayes learning scheme with the inductive logic programming rule-learner FOIL. In contrast to previous combinations, which have employed naı̈ve Bayes only for post-processing the rule sets, nFOIL employs the naı̈ve Bayes criterion to directly guide its search. Experimental evidence shows that nFOIL performs better than both its base line...

The scattering of α-particles off of gold foil was investigated. Attenuation of the α-particle beam was used to measure the thickness of the gold foil used. The coefficient of the Rutherford differential scattering cross section was experimentally determined to be (7.81 ± 5.35) × 10−25cm2, compared to 1.76 × 10−24cm2, with a reduced chi-squared of 3.4, which is a reasonable fit and confirms the...

Natural flappers, such as birds and bats, effectively maneuver in transitional, low Reynolds number flow, outperforming any current small engineered flapping vehicle. Thus, engineers are inspired to investigate the flapping dynamics present in nature to further understand the non-tradional flow aerodynamics in which they operate. Undeniably the success of biological flapping flight is the explo...

A numerical investigation was carried out to analyze the interactions between semi-active tandem flapping foils at various distances with a chord-based Reynolds number of 1100. Results indicate that distance less than 1.5 chord lengths and released in-phase, both exhibited terminal periodic motions nonzero mean stagger distance. In contrast, under other conditions, two ended up without stagger....

A novel relational learning approach that tightly integrates the naı̈ve Bayes learning scheme with the inductive logic programming rule-learner FOIL is presented. In contrast to previous combinations that have employed naı̈ve Bayes only for post-processing the rule sets, the presented approach employs the naı̈ve Bayes criterion to guide its search directly. The proposed technique is implemented in...