Experiments

We have set up experiments in droplet growth and for granular flow. The former experiments address droplets condensing on substrates (breath figures) and growing in bulk (precipitation), respectively. The latter experiment was developed for a science fair, children university and teaching. It addresses multistability of granular gases.


Breath Figures. Droplets Growing on a Substrate.

  • glass panes hold by aluminium blocks
  • closed cooling water circiut to set the temperature of the glass panes
  • image capturing by Nikon CCD camera
  • computer control for temperature protocols and image capturing
  • Python software for image processing

with Tobias Lapp, Jakob de Maeyer

Physical Review Letters 109 (2012) 068701 » ICE: image capturing git project » FIRE: image processing git project »

breath figure setup

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Precipitation. Tracking Droplets in Bulk Flow.

  • light-scattering cuvette in aquarium
  • thermostat and cooling thermostat to implement precise temperature protocols
  • image capturing by dedicated CCD camera with high-resolution optics
  • computer control for temperature protocols and image capturing
  • matlab software for image processing

with Tobias Lapp, Björn Hof, Martin Rohloff

Experiments in Fluids 52 (2012) 1187 »

setup of precipitation experiment

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Granular Gas. Bistability and Symmetry Breaking.

  • motor and mechanics to vibrate plate
  • acrylic glass container with separation wall
  • image capturing by Nikon CCD camera on a tripod
  • computer control for image capturing
  • software for image processing

with James Clewett

setup of granular shaker

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