Ice Particles Trapped by Temperature Gradients at mbar Pressure
Instrumentation and Detectors
2015-06-03 v1 Materials Science
Other Condensed Matter
Fluid Dynamics
Abstract
In laboratory experiments we observe that ice particles (\leq100 \mu m) entrained in a low pressure atmosphere (~1 mbar) get trapped by temperature gradients between three reservoirs at different tempertature. Confining elements are a peltier element at 250 K (bottom), a liquid nitrogen reservoir at 77 K (top) and the surrounding vacuum chamber at 293 K. Particle levitation and trapping is modeled by an interplay of thermophoresis, photophoresis and gravity. A number of ice particles are trapped simultaneously in close spatial distance to each other at least up to minutes and are accessible for further experiments.
Cite
@article{arxiv.1111.1068,
title = {Ice Particles Trapped by Temperature Gradients at mbar Pressure},
author = {Thorben Kelling and Gerhard Wurm and Christoph Dürmann},
journal= {arXiv preprint arXiv:1111.1068},
year = {2015}
}
Comments
Published in Review of Scientific Instruments 82, 2011, 4 pages, 6 figures