Metamaterial absorbers are photonic structures composed of an array of sub-wavelength metallic patterns. Results in literature are usually based on structures of nominal dimensions, despite the significant effect of fabrication tolerances on performance. This research aims to identify the main sources of uncertainty and to investigate their effect, notably that of an irregular surface quality (...

A modern tourist product, which is adjusted to the needs of new tourists no longer includes a tourist partnership role, but individualisation and personalisation of the experience itself. Should such a base be accepted, it is to be concluded that traditional positioning of destination tourist offers on both macro and micro levels is no longer sufficient, i.e. positioning based on comparative ad...

The finite element method is used for modeling of self-positioning microand nanostructures. The geometrically nonlinear problem with large rotations and large displacements is solved using step procedure with coordinate updating after each step. It is shown that the real shape of self-positioning structures is rather complicated and the analytical formulas have limited applicability in the esti...

Comparison of several types of electrostatic micro-actuators is carried out, particularly with respect to their resultant force effects. The continuous mathematical model of such actuators is mostly described by the Laplace equation. In this paper, its numerical solution is performed by a fully adaptive higher-order finite element method, using a code developed by the authors. The methodology i...

INSTRUCTIONS The technology for ultra-precision machining has been developed rapidly and steadily. In recent years, the demand for free form, complex and microscopic cutting has increased as a result of the need for highvalue-added fabrication for items such as high NA glass lenses, micro-grooves, diffractive aspheric lenses and other optical components. The ultra-precision machine for cutting ...

In this paper, a Lorentz force-based XY positioning stage with a stack of four electromagnetic linear motors in parallel configuration is presented. The overall design of the positioning stage consists of a mobile and a fixed part separated using a fourpoint contact technique. The uniqueness of the proposed positioning stage lies in its light design with the ability to perform variable strokes ...

This paper describes an experimental approach to the adaptive positioning of a MEMS production system with nano scale resolution. It is known that accurate positioning within nano – scale requires higher move resolutions which cause drastic speed reductions. Production processes which are running within such production systems are therefore very time consuming or very limited due to their worki...

micro-electro-mechanical systems (mems) are combination of electrical and mechanical components in micron dimensions. in recent years, holding, actuating methods and handling of mems components such asmicrogripper, microsensors and etc. have been deeply studied. microgrippers for handling, positioning andassembling of micro components are very useful so that for clamping need actuation created ...

Omar Farhan Aljanaideh Concordia University, 2013 Smart material actuators are increasingly being explored for various micropositioning applications. Magnetostrictive actuators, in particular, are considered attractive for micro/nano positioning and high speed precision machining due to their high energy density, resolution and force capacity. The magnetostrictive actuators, similar to other sm...