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报告题目:Investigating Anti-icing Surfaces: From Fundamentals to Applications

报告人: Prof.Jianjun Wang, Institute of Chemistry, Chinese Academy of Sciences

报告时间:201404月30日(周三)下午15:00

报告地点:物理研究所M236会议室

邀请人:孟胜 研究员

联系人:赵继民 副研究员

联系电话: 82649408

 

摘要:

Icing on solid surfaces leads to operational difficulties and high maintenance efforts for power networks, aircrafts, ships, ground transportation vehicles and house-hold refrigerators, to name but a few. In extreme cases, icing on surfaces causes disastrous events such as crash of aircrafts and collapse of power networks, which result in severe economic impact and large loss of life. This talk is going to discuss the fundamentals of the ice formation and strategies taken in my group in fighting against icing.

When the supercooling is low, it is possible to remove supercooled liquid water from the solid surfaces before the freezing occurs. For this consideration, we have investigated, on one hand, the effects of solid surfaces on the ice nucleation. On the other hand, we have fabricated surfaces, on which the condensed water could be spontaneously removed. When the supercooling is high, icing on solid surfaces occurs easily. In this case, we have designed surfaces, which have a low ice adhesion and the ice formed atop of it could be removed by a wind action or its own gravity. Moreover, this talk will also discuss bioinspired anti-icing coatings, which are modified with anti-freezing proteins. Ice formation on such surfaces is delayed greatly and a possible mechanism will be proposed.

References:

1.      Qiaolan Zhang, Min He, Jing Chen, Jianjun Wang, et al. Chemical Communications, 2013, 49, 4516-4518.

2.      Jing Chen, Renmei Dou, Dapeng Cui, Jianjun Wang, et al. ACS Appl. Mater. Interfaces, 2013, 5, 4026-4030.

        3.      Jianyong Lv, Yanlin Song, Lei Jiang , Jianjun Wang, ACS NANO, 2014, DOI: 10.1021/nn406522n. (invited review) 


报告人简介:

    王健君研究员于2006年在德国马普高分子研究所获得博士学位。毕业后师从Wegner教授做博士后,并于2007年5月开始在德国马普高分子所担任课题组长。2010年2月回中国科学院化学研究所工作,聘为研究员。在过去几年中,王健君研究员在高分子材料方面展开了深入系列的研究工作, 并取得了一些结果。在《Nature Materials》、《Journal of the American Chemical Society》、《Advanced Materials》、《Physical Review Letters》等学术期刊上发表了多篇研究论文。目前的研究兴趣是能调控过冷水成核变冰与冰黏附的表面材料。

发表于:2014-4-27
 
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