Concept

Arc électrique

Publications associées (93)

Negative differential conduction in the Bloch oscillations regime in the hexagonal silicon carbide polytypes 4H, 6H and 8H

The paper discusses an experimental demonstration of Bloch oscillations connected with Bragg reflection of electrons from the first miniband edge in superlattices of different silicon carbide polytypes. The original experimental method was geared towards o ...

1998

Protection of MV and LV networks against lightning. I. Basic information

The characteristics of lightning overvoltages initiated on overhead distribution lines vary greatly depending on the lightning stroke characteristics, the method of overvoltage generation (direct or induced), the orographic conditions (shielding effects) a ...

1997

Reduction of the effects of InGaAs alloy disorder by using superlattices as the conduction channel in modulation-doped heterostructures

Marcel Py

We present the photo-Hall electrical properties of MBE-grown modulation-doped field-effect transistors (MODFET) structures using the so-called short-period superlattices (SPS) channel of InAs and GaAs instead of the standard InGaAs alloy channel. Photo-Hal ...

Elsevier1996

Hot Electrons in Amorphous Silicon

At extremely high electric fields (F≤0.55 MV/cm) and high temperatures (300

1995

Comparison of two coupling models for lightning-induced overvoltage calculations

Michel Ianoz

The two coupling models most frequently used in the power-lightning literature for the calculation of lightning-induced overvoltages, namely the model by Chowdhuri and Gross (1967) and the model by Agrawal, Price and Gurbaxani (1980), are compared and disc ...

1995

All-Optical Spatial Light-Modulator with Megahertz Modulation Rates

Benoît Marie Joseph Deveaud

We demonstrate a novel all-optical spatial Light modulator capable of megahertz modulation rates. It is based on the quantum-confined Stark effect, but the modulating electric field is entirely photogenerated by strongly asymmetric photocarrier transfer in ...

1995

Overview of alfven eigenmode experiments in jet

Ambrogio Fasoli, Laurent Villard, Jean-Marc Moret, Laurie Porte, Pierre Lavanchy, Jonathan Bryan Lister

Results from the first experiments to drive Alfven Eigenmodes (AEs) with antennas external to a tokamak plasma are presented. In ohmically heated plasma discharges, direct experimental measurements of the damping of toroidicity induced AEs (TAEs) have allo ...

1995

Direct Measurement of the Damping of Toroidicity-Induced Alfven Eigenmodes

Ambrogio Fasoli, Jean-Marc Moret, Pierre Lavanchy, Jonathan Bryan Lister, Philippe Marmillod

This Letter presents the first direct experimental measurements of the damping of toroidicity-induced Alfven eigenmodes (TAE), carried out in the JET tokamak. These measurements were obtained during the first experiments to drive these modes with antennas ...

1995

Influence of Higher Deposition Temperature on a-Si-H Material Properties, Powder Formation and Light-Induced Degradation, Using the Vhf (70 Mhz) Glow-Discharge Technique

Christoph Hollenstein, Arvind Shah, Alan Howling

a-Si:H films were prepared using pure silane in the temperature range from 200 degrees C up to 400 degrees C by the very high frequency glow discharge (VHF-GD) technique. During deposition a He/Ne laser beam directed across the discharge monitored powder f ...

1993

Enzyme electrode-containing sensor for measuring the quantity of a dissolved component, especially glucose

Michael Graetzel, Shaik Mohammed Zakeeruddin

The aim of the invention is to improve existing amperometric sensors used to measure the quantity of a component present in a solution. This aim is reached by using a sensor provided with a measuring electrode (20) having at least one current collector (37 ...

(Asulab S. A., Switz.).1992

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