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PhD position, Doktorandenstelle in physics, chemistry or engineering
Published(1053 days ago)
Deadline for applications(1026 days ago)
University of Duisburg-EssenDuisburg
We are one of the youngest universities in Germany and think in terms of possibilities,
not limitations. In the heart of the Ruhrregion, we develop ideas of the future at our 11
faculties. We are strong in research and teaching, live diversity, support potential and
are highly committed to an educational equality that has earned this name.
The University of Duisburg-Essen (Campus Duisburg) Institute for Combustion and Gas Dynamics (IVG) offers
Participation/Task leader within the DFG (German Research Community)-Research Project "Remote measurement of liquid
water film thickness, temperature, and composition using near-infrared absorption": In numerous technical processes
stationary or transient aqueous liquid films play a role, e.g., in aqueous solutions and multiphase systems with a high
water content (gels, biological culture media). In addition, highly dynamic aqueous fluid films form during spray-wall
interaction. The thickness of the resulting films is often not easily measured and difficult to model. In all these
cases suitable measurement techniques are required that provide quantitative information - if possible non-intrusive
and with high temporal and spatial resolution. Quantities of interest are film thickness as well as temperature and
concentration of dissolved species. Measurements are desired with high spatial and temporal resolution for the investigation
of highly dynamic processes in practical sys-tems. In literature only few quantitative optical techniques are known,
none of them provide the above mentioned combination of properties. This is the main motivation for the current research project.
The following subtasks need to be realized: a) Develop strategies for the measurement of aqueous film thickness via
absorption of near-infrared laser radiation, which are able for highly dynamic data acquisition as required, e.g.,
in spraywall interaction; b) Modify the techniques to enable measurements of thickness, temperature, and solute
concentrations in turbid media (e.g., gels and emulsions); c) Simplify the measurement system through the use of
more robust and cheaper broadband light sources; d) Extend the absorption-based diagnostics for the measurement of
film properties deposited on non-transparent surfaces; e) Enhance the sensitivity by using diode lasers emitting at
longer wavelengths; f) Extend the technique from point to planar measurements using near-infrared cameras. FTIR
absorption spectra from well-defined samples will enable a quantification and the development of data reduction strategies.
The listed research tasks will enable the applicant to prepare a dissertation for obtaining the degree of a PhD.
The participation for preparing and conducting teaching sessions is anticipated.
You have graduated in physics, chemistry, or engineering. Practical experience in optical diagnostics, optics design and/or spectroscopy is appreciated.
We seek applicants with an above average Master degree and with a special interest in interdisciplinary cooperation and enthusiasm for experimental challenges.
Availability of Position:
Duration of Contract:
as soon as possible
13 TV-L, full time
January 31th 2017
The University Duisburg-Essen has been awarded for its effort to promote gender equality with the
"Total-E-Quality-Award". It aims at increasing the share of women in the scientific personnel and therefore
explicitly encourages women to apply. Women will be preferentially considered when equally qualified according
to the state equality law.
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