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.
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Qiao, Y., Sun, Z., Lu, W. et al. Temperature Variation in Energy Absorption System Functionalized by Nanomaterials. MRS Online Proceedings Library 1224, 1017 (2009). https://doi.org/10.1557/PROC-1224-FF10-17
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DOI: https://doi.org/10.1557/PROC-1224-FF10-17