Nano Archive

Effects of gas molecules on nanofluidic behaviors

Qiao, Yu and Cao, Guoxin and Chen, Xi (2007) Effects of gas molecules on nanofluidic behaviors. JOURNAL OF THE AMERICAN CHEMICAL SOCIETY, 129 (8). pp. 2355-2359.

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Most previous studies on nanofluidic motions were focused on liquid-solid interactions, with the important role of gas phase being ignored. Through a molecular dynamics simulation, we show that the gas-liquid interaction can be an indispensable factor in nanoenvironments. Gas molecules in relatively large nanochannels can be dissolved in the liquid during pressure-induced infiltration, leading to the phenomenon of ``nonoutflow''. By contrast, gas molecules tend to form clusters in relatively small nanochannels, which triggers liquid defiltration at a reduced pressure. The results qualitatively fit with the observations in a high-pressure-resting experiment on nanoporous silica gels.

Item Type:Article
Subjects:Physical Science > Nanophysics
Material Science > Nanochemistry
ID Code:1663
Deposited By:Mark Morrison
Deposited On:08 Jan 2009 12:12
Last Modified:08 Jan 2009 12:12

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