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.
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