Concept

Output impedance

Related publications (187)

Electromagnetic fields and beam coupling impedances in a multilayer flat chamber

This paper aims at giving a derivation of the six electromagnetic field components created by an offset point charge travelling at any speed in a flat chamber, i.e. a two dimensional structure consisting of two infinite parallel plates surrounding a vacuum ...

2010

Update of the SPS Impedance Model

Nicolas Frank Mounet, Carlo Zannini, Benoît Salvant

The beam coupling impedance of the CERN SPS is expected to be one of the limitations to an intensity upgrade of the LHC complex. In order to be able to reduce the SPS impedance, its main contributors need to be identified. An impedance model for the SPS ha ...

2010

Stimulating apparatus for stimulating neurological target of live animal has stimulation source in communication with at least one micro-electrode to stimulate neurological target at respective preferred frequency

Philippe Renaud, André Mercanzini

A preferred frequency is identified, being usable to stimulate a neurological target within a mammalian body using at least one microelectrode positioned at or near the target. To establish efficient and effective stimulation, an impedance analyzer is prov ...

2010

Direct localised measurement of electrical resistivity profile in rat and embryonic chick retinas using a microprobe

Philippe Renaud, Arnaud Bertsch, Harald Van Lintel, Robert Meissner, Sri Harsha Kasi Raj

We report an alternative technique to perform a direct and local measurement of electrical resistivities in a layered retinal tissue. Information on resistivity changes along the depth in a retina is important for modelling retinal stimulation by retinal p ...

University of Oslo2010

GENERALIZED FORM FACTORS FOR THE BEAM COUPLING IMPEDANCES IN A FLAT CHAMBER

Nicolas Frank Mounet

The exact formalism from B. Zotter to compute beam coupling impedances has been fully developed only in the case of an infinitely long circular beam pipe. For other two dimensional geometries, some form factors are known only in the ultrarelativistic case ...

2010

Micromachined chip-scale plasma light source

Philippe Renaud, Herbert Shea

We report on the microfabrication and testing of a chip- scale plasma light source. The device consists of a stack of three anodically bonded Pyrex wafers, which hermetically enclose a gas-filled cavity containing interdigitated Aluminum electrodes. When t ...

Elsevier2009

Electrodeposition and Characterization of Bismuth Telluride Nanowires

Simon Granville

In this work, we report thermoelectric measurements on electroplated bismuth telluride nanowires. Porous polycarbonate membranes, obtained by ion-track irradiation lithography, were chosen as electroplating templates. Bismuth telluride nanowires were achie ...

2009

in vivo Electrical Impedance Spectroscopy of Tissue Reaction to Microelectrode Arrays

Philippe Renaud, Arnaud Bertsch, André Mercanzini

The goal of this experiment was to determine the electrical properties of the tissue reaction to implanted microelectrode arrays. We describe a new method of analyzing electrical impedance spectroscopy data to determine the complex impedance of the tissue ...

2009

Tailoring the hydraulic impedance of out-of-plane micromachined electrospray sources with integrated electrodes

Herbert Shea, Renato Krpoun

Hydraulic impedance is a critical parameter for the operation of electrospray emitters, and for preventing flooding when spraying from arrays of emitters. Controlling flow rate by tuning the flow impedance allows accessing different operating modes, such a ...

American Institute of Physics2009

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

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