CH – Page 3 – TechConnect Briefs

Application of Micro-channel Cooling to the Local Thermal Management of Detectors Electronics for Particle Physics

Mapelli A., Petagna P., Pezous A., Renaud P., CERN, CH

Local thermal management through silicon microfluidic devices, already under study for possible application in future 3D architectures for high power computing [1,2], is also a good candidate for solving High Energy Physics related issues. It [...]

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 [...]

Pilot-scale Nanoparticle Manufacture

Wegner K., Grohn A., Multer S., ETH Zürich, CH

A fully automated pilot plant for nanoparticle manufacture by flame spray pyrolysis is presented that allows continuous production of nanopowders at rates up to 500 g/h. For the example of zirconia the scale-up from the [...]

Observation of Early to Full Covering Stages of Ethylene-based CVD of Graphene

Celebi K., Choi J.W., Cole M.T., Altun A.O., Teo K.B.K., Park H.G., ETH Zürich, CH

Scalable growth of graphene has been demonstrated by chemical vapour deposition (CVD) using copper-based catalyst and ethylene precursor. Here, we present our ethylene-based CVD synthesis method of graphene along with our observation of early and [...]

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 [...]

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 [...]

Parallel Fabrication of Single-Walled Carbon Nanotube based Piezoresistive Pressure Sensors

Burg B.R., Helbling T., Hierold C., Poulikakos D., ETH Zürich, CH

A major obstacle in the realization of commercially viable single-walled carbon nanotube (SWNT) based devices, hindering the functionality of this uniquely interesting type of material, is their type and site selective integration. In this work, [...]

High spatial resolution Hall nano-sensors by tuned direct-write Co/C-FEBID

Gabureac M.S., Bernau L., Boero G., Utke I., EMPA, CH

Gas assisted focused electron beam induced deposition (FEBID) is a direct write technique that allows for the deposition of nanoscale structures inside standard scanning electron microscopes (SEM). Here we show that composition of the nano-deposits [...]

Polarisation stabilisation of telecom lasers by minimally-invasive direct-write focused electron beam induced deposition

Utke I., Jenke M.G., Roeling C., Thiesen P.H., Iakovlev V., Sirbu A., Mereuta A., Caliman A., Kapon E., EMPA, Swiss Federal Laboratories for Materials Science and Technology, CH

The possibility to deposit or remove very small amounts of material for tuning purposes on a fully processed micro/nanodevice at the right place, at will, and without damage to surrounding sensitive areas can be very [...]