Forschungszentrum Julich Gmbh

Hans Luth

Michael Gotz Berger

Peter Kordos

Michael Josef Schoning

Marion Thust

Markus Thonissen

Michael Kruger

Rudiger Arens-Fischer

Herbert Munder

Stephan Frohnhoff

Ralf Strumpler

Willi Zander

Michel Marso

Jurgen Schubert

Andreas Schuppen

Ulrich B Kaupp

Claus-Dieter Kohl

Wolfgang Theiss

Joachim Vetter

Robert Romestain

Gilles Lerondel

Harald D Muller

Hans Hummel

Axel Schwarz

Stefan Schutz

Armin Riemer

Bernhard Weissbecker

Lutz Beckers

Axel Michael Schaub

A pH sensitive microsensor which comprises a substrate on which a sensor membrane is formed by laser ablation of a target and depositing the target material on the substrate.

pH-sensitive microsensor and a method of manufacturing a pH-sensitive

Chemical sensor based on porous silicon

In a biosensor system for detecting trace compounds resulting from a fire or from plants damaged by destructive insects, a live chemoreceptor is provided for sensing the trace compounds, and a semiconductor component is connected to the chemoreceptor for providing sensor signals when the chemoreceptor senses the presence of trace compounds.

Biosensor system for detecting organic trace compounds produced by

Biomaterial such as an enzyme, cell, antigen or antibody is immobilized by covalent bonding to a substrate having an Si.sub.3 N.sub.4 surface containing Si--NH.sub.2 groups that provide reactive NH.sub.2 groups. A heterobifunctional cross-linking agent having an NH.sub.2 -reactive group and a biomaterial-reactive group is reacted with the NH.sub.2 groups of the surface and then with the biomaterial or the heterobifunctional cross-linking agent is reacted with the biomaterial and then with the NH.sub.2 groups of the surface. The Si.sub.3 N.sub.4 surface containing Si--NH.sub.2 groups can be formed by precipitating on a substrate a 10-1000 nm thick Si.sub.3 N.sub.4 layer from a SiH.sub.4 /NH.sub.3 mixture, and providing reactive NH.sub.2 groups on the surface of the layer by subjecting the surface to hydrolyzing cleaning.

Biomaterial immobilization on an Si.sub.3 N.sub.4 surface containing

A process for producing a structured area of porous silicon on a substrate, in which silicon is etched and structured by means of illumination, includes selectively aiming the illumination during or after the formation of the porous silicon directly at a selected area of a p-doped substrate in order to effect etching and structuring of the porous silicon in another area. A device for carrying out the process includes an illuminating system for supporting the etching process and for structuring the porous silicon, in which the illuminating system is selectively aimed during or after the formation of the porous silicon directly at a selected area of p-doped substrate in order to effect etching and structuring of the porous silicon in another area.

Process and device for the lighting-supported structuring of porous

Chemical sensors, in particular silicon-based biosensors

Layered system with an electrically activatable layer

Optical component comprising layers of porous silicon

An optoelectronic device, e.g. for integrated circuits, has an Si, II-VI or III/V semiconductor layer and an LaF.sub.3 or La.sub.1-x X.sub.x F.sub.3 insulating layer which is doped with Nd or Er to generate an optical signal whose wavelength is determined by the 4f ions used. The insulating layer can be grown epitaxially on the semiconductor layer and the lanthanide element ion substituting for a metal ion of the material forming the insulating layer has the same valence as the metal for which it is substituted.

Valance specific lanthanide doped optoelectronic metal fluoride

An electronic component especially a permeable base transister is provided as a composite of homoepitaxially grown layers so that space-charge zones defined by the permeable base are formed as pn-junctions between an n-conducting layer and a p-conducting layer.

Electronic component, especially a permeable base transistor

An electronic component especially a permeable base transistor is provided as a composite of homoepitaxially grown layers so that space-charge zones defined by the permeable base are formed as pn-junctions between an n-conducting layer and a p-conducting layer.

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Aachen, Germany

Hans Luth