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Inscribing Wettability Gradients Onto Superhydrophobic Carbon Nanotube Surfaces
Author(s) -
Babu Deepu J.,
Varanakkottu Subramanyan Namboodiri,
Eifert Alexander,
de Koning Dirk,
Cherkashinin Gennady,
Hardt Steffen,
Schneider Jörg J.
Publication year - 2014
Publication title -
advanced materials interfaces
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.671
H-Index - 65
ISSN - 2196-7350
DOI - 10.1002/admi.201300049
Subject(s) - wetting , carbon nanotube , materials science , nanotechnology , nanoscopic scale , passivation , key (lock) , microfluidics , computer science , composite material , layer (electronics) , computer security
Tunable wettability of carbon nanotube (CNT) arrays on the nanoscale is the key to move water droplets on such surfaces on a macroscopic scale. A novel type of superhydrophobic CNT surface for guided droplet transport, a key issue for future microfluidic systems, is demonstrated. It is accomplished by tailoring the required surface roughness using a process employing CNT regrowth, chemical passivation, and corona discharge.