Evonik Operations Gmbh

Evonik Degussa Gmbh

Julia Lyubina

Norbert Windhab

Andreas Karau

Hartwig Rauleder

Juergen Erwin Lang

Kevin Burton

Andrea Engel

Michael Kroell

Benedikt Hartwig

Peter Niepoth

Peter Hölig

Christoph Brücher

Paul Joseph Spencer

Jessica Müller-Albers

Carsten Dentler

Rüdiger Alexowsky

Janaina Marinas Pérez

Janaina Marinas Perez

Jurgen Erwin Lang

Michael KRÖLL

A method of unambiguous identification and authentication of products for the purpose of better recognition of product forgeries and controlling product piracy, including applying to/into the product an identification substance admixture which contains paramagnetic phases or identifying a product which contains an identification substance admixture containing paramagnetic phases and has an ESR fingerprint spectrum that permits unambiguous identification of the product. Such an ESR fingerprint spectrum is easily measurable, but can be copied or forged only with difficulty. The method relates to an individualizable 'femto tag' for femto ledgers and forms an important interface for what are known as “Internet of Things” (IOT).

Unique identification and authentication of products

A body has multiple phases, which have different electron spin resonance spectra that do not result from the simple combination of the ESR spectra of each individual phase.

Masking and subsequently visualising ESR signals using the combination of two materials

A silicon-carbon composite powder having Si and C distributed throughout each particle is provided. The weight ratio of carbon to silicon on the surface of a particle (C/Si)is greater than the weight ratio of carbon to silicon within the total particle (C/Si). The silicon-carbon composite powder is produced by simultaneously feeding into a reactor a gaseous stream of a SiH, SiH, SiHand/or organosilane and a gaseous stream of at least one hydrocarbon of ethylene, ethane, propane and acetylene and reacting the streams using plasma enhanced chemical vapor deposition.

Silicon-carbon composite powder

Process for producing a silicon-carbon composite powder in which

Process for producing a silicon-carbon composite

Hollow bodies having a silicon-comprising shell, are produced by, in a gas comprising at least one silane of the general formula SiHXwith n=1 to 4, m=0 to 2n+2 and X=halogen, (a) generating a non-thermal plasma by an AC voltage of frequency f, or operating a light arc, or introducing electromagnetic energy in the infrared region into the gas, giving a resulting phase which (b) is dispersed in a wetting agent and distilled, and then (c) the distillate is contacted at least once with a mixture of at least two of the substances hydrofluoric acid, nitric acid, water, giving a solid residue comprising hollow bodies having a silicon-comprising shell after the conversion reaction of the distillate with the mixture has abated or ended.

Process for producing hollow silicon bodies

Growing community of inventors

Hanau, Germany

Julia Lyubina