Articles techniques et présentations

Acoustic Resonance (Acu-Res®) Technology [1] is at the core of FT wind sensors, operating by measuring phase shifts between a pair of transducers caused by fluid flow within an acoustic resonator. Three piezoelectric transducers are placed in a triangular formation on the top reflector ... En savoir plus

The purpose of the study is to monitor human body hydration for medical monitoring. It has been shown that the hydration of the deep layers of the skin could reflect the hydration state of the body. Therefore a bioimpedance spectroscopy approach is developed in order to evaluate the skin ... En savoir plus

Thermal ablation is rapidly becoming a standard of care for the treatment of atrial fibrillation (AF), a cardiac disorder characterized by irregular heart rhythm and estimated to impact more than 33 million people worldwide (Chugh et al. Circulation (2013)). AtriCure is a company that ... En savoir plus

In this paper, we have proposed an impedance biosensor based on polymer nanowire (made of polyaniline) for efficient electric field mediated capture of biomolecules. Existing polymer nanowire based biosensors fail to achieve high sensitivity for low surface to volume ratio as the whole ... En savoir plus

Balises are an essential part of pointwise train control systems ensuring the operational safety. Combined with a corresponding onboard unit, it represents an inductive transponder system (Fig. 1). During a crossing, the balise is activated by the 27 MHz magnetic field of the vehicle ... En savoir plus

One way to extract piezoelectric material data from measurements is to utilize vibrational eigenmodes of block-shaped test specimens (Rupitsch 2015). Within a simulation-aided approach this results in optimizing the values of the material data parameters to fit the experimental result, ... En savoir plus

Introduction The electrical properties of materials are important in many different applications. In microelectronics for example, films must perform as insulators, semiconductor or as conducting layers. In recent years, scanning probe methods are being extended to the nanometre scale ... En savoir plus

Introduction Polycrystalline single phase materials often display electrical properties that are a function of their grain size. Impedance spectroscopy, an alternating current technique is ideal for detecting the presence of more than one current path and has been used for many years ... En savoir plus

The otoacoustic emissions (OAEs) are acoustic signals emitted by the inner ear as a consequence of the activity of a nonlinear feedback mechanism capable of amplifying the signal near to the hearing threshold level. The otoacoustic emissions can be used as an acoustic imaging of the ... En savoir plus

Electrical impedance tomography is a non-invasive, low-cost medical imaging technique that can be used long term without radiation hazards. We built a model of the torso, and then used COMSOL Multiphysics® to simulate applied current patterns, compute voltages, and find equi-potential ... En savoir plus