Slippery to sticky transition of hydrophobic nanochannels

Bakli, Chirodeep ; Chakraborty, Suman (2015) Slippery to sticky transition of hydrophobic nanochannels Nano Letters, 15 (11). pp. 7497-7502. ISSN 1530-6984

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Contrary to common intuition that hydrophobic surfaces trivially cause water to slip, we discover a slippery-to-sticky transition in tunable hydrophobic nanochannels. We demonstrate this remarkable phenomenon by bringing out hitherto unveiled interplay between ion inclusions in the water and the interfacial lattice configuration over molecular scales. The consequent alterations in frictional characteristics illustrate that so-called hydrophobic nanochannels can be switchable to manifest features that are otherwise typically associated with hydrophilicity, causing water to stick. Our proposition may bear immense consequences toward fluidically functionalizing a hydrophobic interface without necessitating elaborate surface treatment techniques, bringing in far-ranging implications in diverse applications ranging from nature to energy.

Item Type:Article
Source:Copyright of this article belongs to American Chemical Society.
Keywords:Hydrophilization; Slip; Stick; Wettability
ID Code:100237
Deposited On:08 Nov 2016 06:17
Last Modified:08 Nov 2016 06:17

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