electromechanical coupling – TechConnect Briefs

Current Degradation due to electromechanical coupling in GaN HEMT’s

Padmanabhan B., Vasileska D., Goodnick S.M., Arizona State University, US

The major reliability concern in GaN HEMT technology is the current degradation due to electromechanical coupling.Electromechanical coupling is the change in the piezoelectric polarization charge in the device with the application of bias. A theoretical [...]

The role of Electromechanical coupling in AlGaN/AlN/GaN HEMTs

Padmanabhan B., Vasileska D., Goodnick S.M., Arizona State University, US

we present simulation results for GaN HEMTs in which the structure has additional AlN spacer layer thus completely modifying the electromechanical coupling approach.

Finite Element Modeling of Electro-Mechanical Coupling in Capacitive Micro-Systems

Rochus V., Rixen D.J., Golinval J.-C., University of Liege, BE

The aim of this paper is to deal with multi-physics simulation of micro-electro-mechanical systems (MEMS) based on an advanced numerical methodology. MEMS are very small devices in which electric as well as mechanical and fluid [...]

A New 3D Model of The Electro-Mechanical Response of Piezoelectric Structures

Elata D., Elka E., Abramovich H., Technion – Israel Institute of Technology, IL

The constitutive equations of multi-layered piezoelectric structures are derived in a new form. In this form, the electromechanical coupling is presented as an additional stiffness matrix. This matrix is a true property of the piezoelectric [...]

Implementation of a Nonlinear Control Law for the Magnetostrictive Beam Vibrations by an Amplifier of Current to Current

Bereksi G.S., Center of Advanced European Studies and Research, DE

In this work, we start by giving a weak formulation of an ampli er of current to current network model and some estimations for the electrical current using graph theory. These estimations are interpreted in [...]

Complete Transient Simulations of Electrostatic Actuators

Cojocaru C., Lerch P., Kloeck B., Bourgeois C., Renaud Ph., EPFL, CH

A code for the dynamical simulation of electrostatic actuated micromechanical systems with complex 3D geometry was created. It allows exact electrical force computation at each time step during the dynamic analyses. A finite element method [...]