Pratsinis S.E. – Page 4 – TechConnect Briefs

Micro Patterning Sensor Layers by Flame Deposition and Annealing

Tricoli A., Graf M., Mayer F., Kühne S., Hierlemann A., Pratsinis S.E., Swiss Federal Institute of Technology (ETH Zürich ), CH

A wafer-level, CMOS-compatible, dry process for in-situ synthesis, deposition and annealing of nanostructured, porous metal-oxide layers for gas sensors is presented. First, lace-like, nanostructured layers of pure or Pt-doped SnO2 featuring high porosity (98%) are [...]

Sensing of Organic Vapors by Flame-Made TiO2 Nanoparticles

Teleki A., Pratsinis S.E., Kalyanasundaram K., Gouma P.I., ETH Zürich, CH

Nanostructured anatase TiO2 was produced by flame spray pyrolysis (FSP) and tested for sensing of volatile organic compounds and CO at 500 °C. The as-prepared powders were characterized by transmission/scanning electron microscopy, x-ray diffraction and [...]

Cubic or monoclinic Y2O3:Eu3+ nanoparticles by flame spray pyrolysis

Camenzind A., Strobel R., Pratsinis S.E., ETH Zürich, CH

Continuous, single-step synthesis of cubic monocrystalline Y2O3:Eu3+ nanophosphor particles (10 -20 nm in grain diameter) is achieved by flame spray pyrolysis (FSP). The effect of FSP process parameters on product particle characteristics was investigated by [...]

Integrated Gas-Phase Manufacturing of Nanostructured Particulate Films

Wegner K., Piseri P., Bongiorno G., Vinati S., Pratsinis S.E., Milani P., Tethis S.r.l., IT

An integrated process for controlled one-step production of nanostructured particulate thin films is presented, combining gas-phase nanoparticle synthesis, aerodynamic particle manipulation, size selection and deposition. Such films find industrial application for instance in fuel cells, [...]

Overview – Nanoparticulate Dry (Flame) Synthesis & Applications

Pratsinis S.E., ETH Zürich, CH

Flame synthesis is a scalable technology that was developed largely by valiant evolutionary research for manufacture of commodities (e.g. carbon blacks, fumed silica and pigments). In the last 5-10 years, however, major advances in the [...]

Flame Made Nanoparticles for Gas Sensors

Mädler L., Pratsinis S.E., Sahm T., Gurlo A., Barsan N., Weimar U., University of California, Los Angeles, CH

Flame aerosol technology is one of the most widely used synthesis routes in manufacturing of commercial quantities of nanoparticles. The application of flame spray pyrolysis further broadens the spectrum of flame made powders and their [...]