玫瑰花花瓣微观结构与水滴黏附性质的关系  

Effects of Micro-and Nano-structure on the Adhesive Property of Rose Petals

作　　者：王明超[1] 杨青林[1] 王春[1] 王景明[1] 江雷[1,2] 

机构地区：[1]北京航空航天大学化学与环境学院,北京100191 [2]中国科学院化学研究所分子科学国家实验室,北京100190

出　　处：《高等学校化学学报》2011年第7期1594-1597,共4页Chemical Journal of Chinese Universities

基　　金：国家自然科学基金(批准号:20901006);中央高校基本业务科研费专项资金(批准号:YWF-10-01-B16)资助

摘　　要：利用环境扫描电镜(ESEM)分别观察了新鲜和枯萎的玫瑰花花瓣正反两面的微观形貌,并通过测量样品的表观接触角表征了其浸润性,采用高敏感性微电力学天平测试了样品表面的黏附力,分析了玫瑰花花瓣微观结构与水滴黏附性质的关系.结果表明,微米结构主要影响玫瑰花花瓣的超疏水性,而纳米结构则是导致玫瑰花花瓣具有高黏附力的关键因素.The surface adhesive effect was characterized by the high-sensitivity microelectromechanical balance system,and the effects of micro-and nano-structure on the adhesive property of rose petals were investigated.The morphology of obverse and reverse surface of fresh and dry rose petals were observed by environmental scanning electron microscope（ESEM）,and the wettability was characterized by the apparent contact angle.The experimental results show that surface hydrophobicity can be enhanced by the micro-scaled structure and the high adhesive force is mainly caused by the nano-scaled structure.It is believed that this work will provide a new avenue to further understand the wettablilty of solid surface,and design novel microfluidic devices in a wide range of applications,such as many localized chemical or biological reactions,traced analysis,and in situ detection.

关 键 词：玫瑰花花瓣 表面黏附力 微米结构 纳米结构 

分 类 号：O647[理学—物理化学]