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Home » Research » Research at MRD » Research Projects » Project details

- Ruhr-Universität Bochum

SFB 1316: Transient Atmospheric Plasmas - From Plasmas to Liquids to Solids

Non-equilibrium processes are the basis of a multitude of phenomena in nature such as transport, excitation of atoms and molecules and de-excitation and dissipation at surfaces. The non-equilibrium character of plasmas is especially pronounced due to the high energy density in these systems and the very selective excitation of, for example, only the electrons. If these plasmas are brought into contact with solids or liquids, the non-equilibrium character can be transferred to other states of matter. An excellent example are plasma chemistry processes that are directly coupled to catalytically active surfaces.

The use of non-equilibrium atmospheric pressure plasmas is most interesting since they can most easily be combined with standard chemical processes. The non-equilibrium character of these plasmas can be controlled by large gas flows or by short pulsed excitation assuring strong cooling mechanisms. Thereby, a huge variety of desired plasma chemistries or emission patterns can be adjusted following an empirical strategy. However, any further progress is hampered by the lack of a fundamental understanding of those discharges and their interaction with fluid and solid interfaces leading to many open questions:

  • How to reach and maintain a stable atmospheric pressure non-equilibrium discharge in a range of different gas mixtures?
  • How to efficiently transport the species from the plasma to the object to be treated or coated? What are the chemical non-equilibrium synthesis routes of new materials or species?
  • How does the transfer of species and energy occur on the nanosecond timescale?
  • What are the roles of gaseous, liquid, biological, and solid state catalysts in contact with those plasmas?

MRD Researchers:
  • Peter Awakowicz
  • Beatriz Roldán Cuenya

Project website

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