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Capillary Kinetics of Water in Homogeneous, Hydrophilic Polymeric Micro‐ to Nanochannels
Author(s) -
Jeong Hoon Eui,
Kim Pilnam,
Kwak Moon Kyoo,
Seo Chang Ho,
Suh Kahp Y.
Publication year - 2007
Publication title -
small
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 3.785
H-Index - 236
eISSN - 1613-6829
pISSN - 1613-6810
DOI - 10.1002/smll.200600666
Subject(s) - polydimethylsiloxane , capillary action , kinetics , materials science , ethylene glycol , chemical engineering , substrate (aquarium) , peg ratio , homogeneous , nanotechnology , composite material , thermodynamics , oceanography , physics , finance , quantum mechanics , geology , engineering , economics
Going with the flow : Homogenous, hydrophilic micro‐ to nanochannels of poly(ethylene glycol) (PEG) were fabricated by direct molding and UV‐assisted bonding. By using these channels, the capillary kinetics of water was measured for potential pumpless, high‐speed analytical tools. It was found that the capillary‐filling speed inside a PEG channel (see fluorescence image) was two or three orders of magnitude higher than that inside a hydrophobic polydimethylsiloxane channel supported on a glass substrate.