Pratsinis S.E. – Page 2 – TechConnect Briefs

Au nanoelectrodes for breath analysis

Righettoni M., Tricoli A., Pratsinis S.E., ETH Zürich, CH

New medical diagnostic methods such as non-invasive human breath analysis bear the potential of drastically reducing medical costs as a greater amount of automatization is possible. SnO2 is one of the most utilized and best [...]

Agglomerates and Aggregates: Number and Size of Primary Particles from in-situ Mass-Mobility Measurements

Eggersdorfer M.L., Gröhn A.J., Sorensen C.M., McMurry P.H., Pratsinis S.E., ETH Zürich, CH

Gas-borne nanoparticles generated at high temperatures undergo coagulation forming agglomerates (physically-bound particles) and aggregates (chemically- or sinter-bound particles). The structure of such particles influences their transport, light scattering, effective surface area and density. Real-time characterization [...]

A novel technique for toxicological characterization of engineered nanomaterials

Demokritou P., Sotiriou G.A., Diaz E., Godleski J., Brain J., Pratsinis S.E., Harvard University, US

How do we balance the potential hazards from new and inadequately characterized engineered nanomaterials with the potential and power of nanotechnology? It has become apparent, that potential environmental health effects are critical factors in the [...]

Hybrid silica-coated palsmonic-magnetic biomarkers

Sotiriou G.A., Hirt A.M., Lozach P-Y., Teleki A., Krumeich F., Pratsinis S.E., Particle Technology Laboratory, ETH Zürich, CH

In this study, hybrid silica-coated plasmonic-magnetic nanoparticles have been synthesized in one-step by a scalable flame aerosol technology. The effect of the silica in the stability of the nanoparticles, as well as their biocompatibility are [...]

Portable gas sensor for breath analysis

Righettoni M., Tricoli A., Gass S., Pratsinis S.E., ETH Zürich, CH

The detection of acetone in the human breath is a promising method for the noninvasive diagnosis and monitoring of diabetes. Here, a portable and highly selective acetone-sensor was developed by direct flame synthesis and deposition [...]

Color tunable nanophosphors

Sotiriou G.A., Schneider M., Pratsinis S.E., Particle Technology Laboratory, ETH Zürich, CH

In this study, yttrium oxide nanophosphors doped with Tb and Eu ions were made by flame aerosol technology. The emission color of these nanophosphors could be precisely tuned from green to red by tuning the [...]

Plasmonic Biosensors with biocompatible nanosilver

Sotiriou G.A., Sannomiya T., Teleki A., Voeroes J., Pratsinis S.E., Particle Technology Laboratory, ETH Zürich, CH

In this study, silica-coated nanosilver particles were made by flame aerosol technology. The effect of the silica coating on the morphology of the particles, as well as their biocompatibility was examined. Finally, the potential of [...]

Rapid Synthesis of Anti-Fogging Coatings

Tricoli A., Righettoni M., Pratsinis S.E., Swiss Federal Institute of Technology, CH

The wetting properties of surfaces are fundamental properties greatly influencing their interaction with the environment. Self-cleaning, bacteria-resistant, and anti-fogging surfaces are feasible by depositing either super-hydrophobic or super-hydrophilic coatings and will have great impact on [...]

Antibacterial activity of flame-made Ag/SiO2 nanoparticles

Sotiriou G.A., Camenzind A., Meyer A., Panke S., Pratsinis S.E., ETH Zürich, CH

The synthesis of flame made Ag/SiO2 nanoparticles was achieved by flame spray pyrolysis. The precursor selection influence on the final product was studied. The produced powders were characterized by TEM/STEM, XRD, BET, UV/vis. Additionally, the [...]

Silica-coated Ag nanoparticles by scalable flame technology

Sotiriou G.A., Camenzind A., Pratsinis S.E., ETH Zürich, CH

Silica coated silver nanoparticles have been synthesized in one step, by using flame spray pyrolysis. By controlling the production parameters, different sizes and different coating thicknesses were achieved. The particles were characterized with TEM/STEM, EDX [...]