תקציר
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.
שפה מקורית | אנגלית |
---|---|
עמודים (מ-עד) | 367-371 |
מספר עמודים | 5 |
כתב עת | Colloids and Surfaces B: Biointerfaces |
כרך | 92 |
מזהי עצם דיגיטלי (DOIs) | |
סטטוס פרסום | פורסם - 1 אפר׳ 2012 |