Concept

Electrical resonance

Publications associées (64)

Theoretical Analysis of Mechanical Displacement Measurement Using a Multiple Cavity Mode Transducer

We present an optomechanical displacement transducer that relies on three cavity modes parametrically coupled to a mechanical oscillator and whose frequency spacing matches the mechanical resonance frequency. The additional resonances allow reaching the st ...

2010

The tissue reaction to neuroprostheses

André Mercanzini

Neuroprostheses were developed for a variety of applications using unique microfabrication methods. A technology platform that enables novel microelectrode array designs and microfluidic channels is described. Experiments demonstrating the in vivo utility ...

EPFL2009

Controlled Resonant Circuit with Commutated Capacitors using Self-Switching Power Devices

Alfred Rufer, Daniel Siemaszko, Christian Rod

This paper presents a preliminary work on a resonant circuit, also called AC-dipole. The resonance frequency of the circuit is changed by the mean of a variable capacitor connecting an inductor. For this purpose, a bank of switched capacitors of different ...

Ieee Service Center, 445 Hoes Lane, Po Box 1331, Piscataway, Nj 08855-1331 Usa2009

Narrowband optical interactions in a plasmonic nanoparticle chain coupled to a metallic film

Olivier Martin, Daniele Brunazzo

We study the coupling of localized surface plasmon (LSP) and surface-plasmon polariton (SPP) modes in a system composed of a metallic nanoparticle chain separated from a thin metallic film by a dielectric spacer. The thickness of such a spacer influences t ...

Optical Society of America2009

TREMR: Table-resonance elastography with MR

Daniel Gallichan

Magnetic resonance elastography (MRE) is a noninvasive method of measuring tissue compliance. Current MRE methods rely on custom-built hardware to elicit vibrations that are tracked by MR imaging. Knowledge of the wave propagation can be used to calculate ...

Wiley-Blackwell2009

Electrical tuning of dc bias induced acoustic resonances in paraelectric thin films

Nava Setter, Alexander Tagantsev

A theoretical model for the dc bias dependence of induced acoustic resonances in paraelectric materials is presented. The field dependent piezoelectric constitutive equations were derived from the Landau free energy expansion with respect to the ferroelect ...

2008

A frequency-tunable impedance matching network based on coupled inductors for RF power amplifiers

Maher Kayal

In this paper we present an RF PA employing an output impedance matching network of the pi-type, where an inductor is variable. In order to implement this tunable inductor, the coupled-inductor technique [1] is used. Although other techniques for inductor ...

2008

Model to predict overheating risk based on an electrical capacitor analogy

Darren Robinson, Frédéric Haldi

It is important for building designers to be able to judge if a space is likely to overheat, whether to determine if HVAC plant is required or to design this out by passive means. To this end several overheating risk criteria have recently been published. ...

2008

Shunt-Feedback Ring Oscillator: a New Topology for Wideband Multiphase Signal Generations

Pierre-André Farine, Cyril Botteron, Uroschanit Yodprasit, Alexander Heubi

A negative-feedback scheme is applied to the gain stage of RC and LC ring oscillators to extend the frequency tuning range and to enhance the maximum oscillation frequency, respectively. This can be achieved without penalties in power consumption, supply v ...

2007

DC bias dependent shift of resonance frequencies in BST thin film membranes

Nava Setter, Paul Muralt

DC bias dependent acoustic resonance phenomena have been observed in micromachined tunable thin film capacitors based on Ba0.3Sr0.7TiO3 (BST) thin films. The antiresonance frequency is only weakly dc bias dependent, whereas the resonance frequency exhibits ...

Ieee Service Center, 445 Hoes Lane, Po Box 1331, Piscataway, Nj 08855-1331 Usa2007

Graph Chatbot

Chattez avec Graph Search

Posez n’importe quelle question sur les cours, conférences, exercices, recherches, actualités, etc. de l’EPFL ou essayez les exemples de questions ci-dessous.

AVERTISSEMENT : Le chatbot Graph n'est pas programmé pour fournir des réponses explicites ou catégoriques à vos questions. Il transforme plutôt vos questions en demandes API qui sont distribuées aux différents services informatiques officiellement administrés par l'EPFL. Son but est uniquement de collecter et de recommander des références pertinentes à des contenus que vous pouvez explorer pour vous aider à répondre à vos questions.

Connectez-vous pour utiliser Chat avec Graph Search