The micromagnetic structure of nanofabricated nickel particles has been determined as a function of particle diameter and thickness using a combination of high-resolution magnetic force microscopy and LandauLifshitz-Gilbert micromagnetic simulations. Cylindrical particles were lithographically prepared with diameters in the range 68 900 nm, and thickness between 48 and 140 nm. Extensive measure...

The internal pressure of a thin-walled cylindrical structure under axial compression may improve the buckling stability by relieving loads and reducing initial imperfections. In this study, effect on knockdown factor is investigated for axially compressed composite cylinders with different shell thickness ratios slenderness ratios. Various are considered when derived both pressure. Nonlinear po...

Although there are many simulations of residual stresses in quenched steel components there is little validation of these predictions particularly when the components are large. This is not surprising bearing in mind that the application of the through thickness measurement techniques (mechanical strain relief techniques) are problematic when the components exhibit high levels of residual stres...

A reeection and refraction model for anisotropic surfaces is introduced. The anisotropy is simulated by small cylinders (added or subtracted) distributed on the anisotropic surface. Diierent levels of anisotropy are achieved by varying the distance between each cylinder and/or rising the cylinders more or less from the surface. Multidirectional anisotropy is modelled by orienting groups of cyli...

Using existing heat transfer data, a relatively simple expression was developed for estimating the effective thickness of the boundary layer of air surrounding cylinders. For wind velocities from 10 to 1000 cm/second, the calculated boundary-layer thickness agreed with that determined for water vapor diffusion from a moistened cylindrical surface 2 cm in diameter. It correctly predicted the res...

On-board pneumatic valves produced with laminate fabrication processes provide a cost effective way to perform metering mixing and gating of fluid movement in Lab on a chip devices. These valves can be used in multiplexed molecularor immunoassays where successive reagent additions and/or washes are needed. The laminate valve assembly, produced in a batch fabrication process, is combined with an...