A1 A2 A3 A4 A5 A6 A7 A8 A9 B1 B2 B4 B5 B7 B8

B5: 2D-plasma-liquid-solid interfaces – plasma electrolytic oxidation

Principal Investigators: P. Awakowicz


Awakowicz, Peter
(Principal Investigator)

Bracht, Vera


ImageMicrodischarges produced in conductive liquids generate extreme environments, with highly complex physical and chemical characteristics, and are widely used for a range of applications. This project aims to develop a better understanding of these systems, and develop new strategies to control them. In the first phase, a suite of experimental diagnostics were implemented with the overarching aim of developing insights into the physical processes occurring in individual microdischarges at the small scale that could then be transferred into control strategies at larger scales. The project focus is on Plasma Electrolytic Oxidation (PEO) of Al. An active combination of complementary experimental and simulation approaches is used to generate new insights into both physical and chemical processes with an emphasis on particle and energy transfer across the electrode-gas-electrolyte interfaces at both short and longer timescales.


  • Formation and behaviour of plasma spots on the surface of titanium film
    P. Hermanns, F. Kogelheide, V. Bracht, S. Ries, F. Krüger, S. Böddeker, N. Bibinov, P. Awakowicz
    J. Phys. D: Appl. Phys. 54, 085203 (2021)
  • Investigation of the frequency dependent spatio-temporal dynamics and controllability of microdischarges in unipolar pulsed plasma electrolytic oxidation
    P. Hermanns, S. Boeddeker, V. Bracht, N. Bibinov, G. Grundmeier, P. Awakowicz
    J. Phys. D: Appl. Phys. 54, 045205 (2021)
  • In-situ control of microdischarge characteristics in unipolar pulsed plasma electrolytic oxidation of aluminium
    P. Hermanns, S. Boeddeker, V. Bracht, N. Bibinov, P. Awakowicz
    J. Phys. D: Appl. Phys. 53, 435204 (2020)


  • Patrick Herrmanns
    Charakterisierung und Prozessoptimierung industriell relevanter Mikroplasmen: Von der Beschichtungstechnik bis zur Mikrosensorik (PhD thesis) - 10/2020
  • Simon Böddeker
    Elektrische Messtechnik und statistische Prozessdiagnostik an einem PEO-Beschichtungsprozess (MA) - 01/2020
  • Anna Lena Schöne
    Optische und elektrische Messtechnik an einem Einzelentladungsaufbau zur plasmaelektrolytischen Oxidation (BA) - 09/2019
  • Vera Bracht
    Plasma Electrolytic Oxidation (PhD thesis) - ongoing

Further reading

  • Phase resolved analysis of the homogeneity of a diffuse dielectric barrier discharge,
    S. Baldus, F. Kogelheide, N. Bibinov, K. Stapelmann, and P. Awakowicz,
    J. Phys. D: Appl. Phys. 48 375202 (2015)
  • Space-resolved characterization of high frequency atmospheric-pressure plasma in nitrogen, applying optical emission spectroscopy and numerical simul.
    Priyadarshini Rajasekaran, Cornelia Ruhrmann, Nikita Bibinov, Peter Awakowicz,
    J. Phys. D: Appl. Phys. 44 485205 (2011)

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