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Superhydrophobic Tracks for Low‐Friction, Guided Transport of Water Droplets
Author(s) -
Mertaniemi Henrikki,
Jokinen Ville,
Sainiemi Lauri,
Franssila Sami,
Marmur Abraham,
Ikkala Olli,
Ras Robin H. A.
Publication year - 2011
Publication title -
advanced materials
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 10.707
H-Index - 527
eISSN - 1521-4095
pISSN - 0935-9648
DOI - 10.1002/adma.201100461
Subject(s) - materials science , drop (telecommunication) , nanotechnology , gravitation , gravitational force , mechanics , classical mechanics , mechanical engineering , physics , engineering
We demonstrate a simple yet efficient approach for droplet transport , in which the droplet is moving on a superhydrophobic surface, using gravity or electrostatic forces as the driving force for droplet transportation and using tracks with vertical walls as gravitational potential barriers to design trajectories. We further demonstrate splitting of a droplet using a superhydrophobic knife, and drop‐size selection using superhydrophobic tracks with a local widening.