Articles techniques et présentations

A critical element in understanding the pre-breakdown and breakdown mechanisms in gas/solid insulation systems is the triple point. This point is where two dielectric materials and a conductor intersect. Understanding these mechanisms at the triple point is crucial for designing systems ... En savoir plus

In the field of coding and industrial marking areas, CIJ technology is based on high speed emission of ink drops (20 m/s) which are directed onto a moving printing medium. The printing quality depends, on one hand, on drops position on the media determined by the drop charge and the ... En savoir plus

A substantial campaign of simulations was recently launched in the Bonomi Group with the goal of improving the understanding of the multiphysics involved in high voltage equipment such as aerial power lines, insulators, surge protectors and disconnectors. The activity not only resulted ... En savoir plus

Gallium Oxide (β-Ga2O3) is an emerging wide bandgap oxide semiconductor that has garnered attention for power electronic applications because of its large 4.8 eV bandgap energy and critical electric field strength of ~ 8 MV/cm [1]. However, due to Gallium Oxides' poor thermal ... En savoir plus

Modern composite membranes for reverse osmosis (RO) and nanofiltration (NF) have an ultrathin polyamide active layer (~100 nm) that performs the ion separation. Current theoretical models explain solute and water fluxes by computing concentration and potential gradients developed in one ... En savoir plus

Micro shutter array (MSA) is a programmable optical spatial filtering device fabricated by micro electro-mechanical system (MEMS) technology. It was originally developed for James Webb Space Telescope (JWST) to enable multi-object spectroscopy and operated by a moving magnet. Next ... En savoir plus

Helicon Injected Inertial Plasma Electrostatic Rocket (HIIPER) [1] is a plasma thruster being researched at University of Illinois Urbana-Champaign. It has been shown in Figure 1. It involves a helicon source along with an Inertial Electrostatic Confinement (IEC) chamber. IEC is a fusion ... En savoir plus

In this paper a finite element method(FEM) study of a surface acoustic wave (SAW)device excited by electrostatic coupling method is performed by using COMSOL Multiphysics. We have modeled a Rayleigh wave type SAW device by choosing YZ Lithium niobate as the substrate. The effect of ... En savoir plus

Condenser microphones will have an electrical output for any displacement of the membrane relative to the back plate, which is usually bound to the microphone housing. For the typical use case, a pressure input will create a pressure difference across the membrane, which causes a ... En savoir plus

Depletion layer MEMS actuators have been demonstrated in the past in p-n junctions as well as Schottky barrier interfaces to be effective transducers for internal transduction of high Q MEMS resonators without the need for piezoelectric materials or small resonator-electrode gaps. ... En savoir plus