Plasma treatment induced wetting transitions on biological tissue (pigeon feathers)

Edward Bormashenko, Roman Grynyov

Research output: Contribution to journalArticlepeer-review

22 Scopus citations


We report first the wetting transition from superhydrophobicity to superhydrophilicity observed on nitrogen and air plasma irradiated biological tissue (pigeon feathers). Non-irradiated feathers demonstrate pronounced Cassie-Baxter (" fakir" ) wetting characterized by high apparent contact angles and low sliding angles. Plasma-irradiated feathers are superhydrophilic. Plasma treatment does not affect the barbs/barbules keratin-built network constituting pigeon pennae, but it changes the Young, advancing and receding angles of the tissue. The mechanism of wetting transition is discussed.

Original languageEnglish
Pages (from-to)367-371
Number of pages5
JournalColloids and Surfaces B: Biointerfaces
StatePublished - 1 Apr 2012


  • Air and nitrogen plasma
  • Contact angle
  • Keratin
  • Pigeon feather
  • Wetting properties
  • Wetting transition


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