von Rohr Ph.R. – TechConnect Briefs

Wet organometallic chemistry for palladium nanoparticles synthesis performed in an organic media and under supercritical conditions in microreactors

Desportes S., Tidona B., von Rohr Ph.R., ETH Zürich, CH

Nanoparticles are been produced in a microreactor under different operating conditions, spefically under supercritical CO2. The known organometallic chemistry is been used to create Pd-nanoparticles. Compared to the batch process the processing time could be [...]

Surface modification of powders and nanostructure deposition in the afterglow of a low power barrier discharge at atmospheric pressure

Sonnenfeld A., Reichen P., von Rohr Ph.R., ETH Zürich, CH

The precipitation of solid-state sphere-like nanostructures from an organosilicon precursor at atmospheric pressure is investigated in the prospect of the improvement of powder flowability by the attachment of nanoscopic spacers to the powder particles surfaces. [...]

Nanoscale Plasma Surface Modification of Powders

Roth C., Sonnenfeld A., von Rohr Ph.R., ETH Zürich, CH

New results of the plasma surface modification of fine-grained temperature sensitive particles are presented. Nanoparticles are deposited on larger substrate particles in a specially designed plasma chamber to improve the macroscopic powder properties as flowability [...]