Ice Adhesion on Lubricant-Impregnated Textured Surfaces

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• 作者：Srinivas Bengaluru Subramanyam ; Konrad Rykaczewski ; Kripa K. Varanasi
• 刊名：Langmuir
• 出版年：2013
• 出版时间：November 5, 2013
• 年：2013
• 卷：29
• 期：44
• 页码：13414-13418
• 全文大小：322K
• 年卷期：v.29,no.44(November 5, 2013)
• ISSN：1520-5827

文摘

Ice accretion is an important problem and passive approaches for reducing ice-adhesion are of great interest in various systems such as aircrafts, power lines, wind turbines, and oil platforms. Here, we study the ice-adhesion properties of lubricant-impregnated textured surfaces. Force measurements show ice adhesion strength on textured surfaces impregnated with thermodynamically stable lubricant films to be higher than that on surfaces with excess lubricant. Systematic ice-adhesion measurements indicate that the ice-adhesion strength is dependent on texture and decreases with increasing texture density. Direct cryogenic SEM imaging of the fractured ice surface and the interface between ice and lubricant-impregnated textured surface reveal stress concentrators and crack initiation sites that can increase with texture density and result in lowering adhesion strength. Thus, lubricant-impregnated surfaces have to be optimized to outperform state-of-the-art icephobic treatments.