Articles techniques et présentations

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

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

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

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

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

High Voltage Electronic Transformers operate at high frequency, typically in a range of tens-to-hundreds of kHz. Knowing and tuning their parasitic parameters is an important aspect at the design phase. Although a vast amount of analytical means is available for calculating parasitics, ... En savoir plus

While electric double layers play a crucial role in many biophysical processes involving charged molecular species (such as proteins and DNA), they are often a limiting factor in technological applications where charged conductors are brought in contact with electrolyte solutions. ... 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

A plate Differential Mobility Analyser (DMA) is composed of two parallel plates between which aerosol-laden air flows. A specific device charges the aerosol particles electrically before they enter the DMA. Applying a voltage difference between the plates allows to deflect the particles ... En savoir plus

The present work focuses on modeling a new experimental technique: Scanning Electro-chemical Potential Microscopy (SECPM), which is used to probe the potential profile of the electric double layer (EDL). We used an electrostatic approach to compute the EDL potential measured within the ... En savoir plus