ملخص
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.
اللغة الأصلية | الإنجليزيّة |
---|---|
الصفحات (من إلى) | 367-371 |
عدد الصفحات | 5 |
دورية | Colloids and Surfaces B: Biointerfaces |
مستوى الصوت | 92 |
المعرِّفات الرقمية للأشياء | |
حالة النشر | نُشِر - 1 أبريل 2012 |