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Temperature Variation in Energy Absorption System Functionalized by Nanomaterials

Published online by Cambridge University Press:  31 January 2011

Yu Qiao ,
Zhongyuan Sun ,
Weiyi Lu  and
Aijie Han
Yu Qiao
Affiliation:
yqiao@ucsd.edu, University of California-San Diego, Structural Engineering, La Jolla, California, United States
Zhongyuan Sun
Affiliation:
zsun@broncs.utpa.edu, University of Texas-Pan American, Chemistry, Edinburg, Texas, United States
Weiyi Lu
Affiliation:
w3lu@ucsd.edu, University of California-San Diego, Structural Engineering, La Jolla, California, United States
Aijie Han
Affiliation:
hana@utpa.edu, University of Texas-Pan American, Chemistry, Edinburg, Texas, United States
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Abstract

The thermal effect on the nanofluidic behaviors in a nanoporous silica gel is investigated experimentally. When a nanoporous silica gel is modified by silyl groups, its surface becomes hydrophobic. A sufficiently high external pressure must be applied to overcome the capillary effect; otherwise liquid infiltration could not occur. The formation and the disappearance of a solid–liquid interface are employed for energy storage or dissipation. When the hydrophobic surface of nanoporous silica gel is decomposed at various temperatures, the organic surface layers can be deactivated. As a result, the degree of hydrophobicity, which can be measured by the liquid infiltration pressure, is lowered. The infiltration and defiltration behaviors of liquid are dependent on the controlled by the decomposition-treatment temperature.

Keywords

absorptionenergy storagenanostructure
Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 1224: Symposia FF/GG – Mechanical Behavior at Small Scales — Experiments and Modeling , 2009 , 1224-FF10-17
Copyright
Copyright © Materials Research Society 2010

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