Abb Research Ltd.

Universitè De Genève

Promogap

L'universite De Geneve

Oystein Fischer

Michel Decroux

Willi Paul

Makan Chen

Olivier Kuffer

Louis Antognazza

Thomas Tybell

Christophe Renner

Malcom R Beasley

Charles H Ahn

Jean-Marc Triscone

Bernd Seeber

Jorge Cors

The invention is concerned with a resistive fault current limiter (FCL) based on thin superconducting films. The FCL comprises constrictions ( ) with a reduced critical current, separated by connecting paths ( ). Upon occurrence of a fault current, the former turn resistive simultaneously and build up a resistance which allows the applied voltage to drop entirely only over the constrictions. Only at a later stage, the connecting paths become resistive and dissipate energy. The thickness and width of an electrical bypass determine said normal resistivities of the constrictions and the connecting paths.

Superconducting fault current limiter

The invention concerns a component of composite structure ( ) consisting of a layer of ferroelectric material ( ) and at least a thin film of semiconductor material or of a thin metal or supraconducting film ( ) in close contact with the layer of ferroelectric material ( ). It further comprises means for generating local modifications of the ferroelectric material polarization. This mechanism includes a device for applying a voltage between at least one punctiform electrode ( ) arranged for selectively scanning the composite structure ( ) surface facing that consisting of the semiconductor or thin metal or supraconducting film ( ), and the semiconductor or thin metal or supraconducting film.

Electric or electronic component and application as non volatile memory and device with surface acoustic waves

Process for increasing the density and improving the homogeneity of

Growing community of inventors

Coppet, Switzerland

Oystein Fischer