Martine G.C. Vernooij

ETH Zurich | ETH Zürich · Department of Architecture

Scanning transmission X-ray microscopy (STXM), a microscopy method which allows imaging with a spatial resolution of 40 nm, and X-ray absorption spectroscopy were used to follow in situ the water uptake and release in submicrometer sized particles on a substrate enclosed in a microreactor. Oxygen K-edge near edge X-ray absorption fine structure (NE...

In this paper, we report on novel flail-like gold architectures obtained by a simple and template-free electrochemical method. The addition of gelatin plays a major role in the fabrication of this original structure and might open new possibilities for electrochemical deposition of other metals. The size of the flail-like gold structures can be var...

A new in situ cell to study phase transitions and chemical processes on individual aerosol particles in the x-ray transmission microscope at the PolLux beamline of the Swiss light source has been built. The cell is machined from stainless steel and aluminum components and is designed to be used in the standard mount of the microscope without need o...

Diesel and wood combustion are major sources of carbonaceous particles in the atmosphere. It is very hard to distinguish between the two sources by looking at soot particle morphology, but clear differences in the chemical structure of single particles are revealed by C(1s) NEXAFS (near edge X-ray absorption fine structure) microspectroscopy. Soot...

We report on the successful installation and operation of a scanning transmission x-ray microspectroscope (STXM) at the PolLux facility at the Swiss Light Source. This integration of an advanced STXM with improved sample handling capabilities and a novel beamline provides unique capabilities. PolLux uses linearly or circularly polarized x-rays from...

Thermodenuders are used to remove the volatile fraction of an aerosol. All designs until now have a cooled adsorption section where the volatile material is trapped, but theoretical considerations suggest that the adsorption section should be heated. Therefore, we built a thermodenuder with a heated adsorption section. We tested its performance wit...

Deformation experiments have been carried out to investigate the effect of dynamic recrystallisation on crystallographic preferred orientation (CPO) development. Cylindrical samples of natural single crystals of quartz were axially deformed together with 1 vol.% of added water and 20 mg of Mn2O3 powder in a Griggs solid medium deformation apparatus...

Intracrystalline shear zones developed in a quartz single crystal that was experimentally deformed to 26% finite strain under conditions favourable for macroscopically ductile deformation. The crystal was uniaxially compressed parallel to 〈c〉, in the presence of 1 vol.% of added water, at a temperature of 800 °C, a confining pressure of 1200 MPa an...

Abstract— Planar features can develop in quartz during comparatively slow tectonic deformation and during very fast dynamic shock metamorphism. Despite their very different structural nature, tectonically induced deformation lamellae have sometimes been mistaken as shock-induced planar deformation features (PDFs). To understand the formation of def...

Experiments have been carried out to investigate lattice preferred orientation (LPO) development in quartz single crystals. Cylindrical samples of natural single crystals of Brazilian quartz were axially deformed in a Griggs solid medium deformation apparatus in the ductile deformation field. The experiments were performed at a temperature of 800°C...

An experimental study has been carried out to investigate lattice preferred orientation (LPO) development in quartz single crystals. Cylindrical samples of natural single crystals of Brazilian quartz were axially deformed in a Griggs solid medium deformation apparatus in the ductile deformation field. The experiments were performed at a temperature...

Diss. no. 16050 nat. sc. SFIT Zurich. Literaturverz. ETH, Zürich