Superhydrophobic, Superslippery, Nanopatterned Metallic and Polymeric Surfaces

这项研究计划的目标是开发一种快速生产技术，利用激光飞秒烧蚀对各种金属和聚合物基片进行纳米刻蚀，并优化金属和聚合物表面的形态，以确定产生最大超疏水和超疏油性能的最佳表面形态。我们以前在制造超疏水基板领域的发展缓慢，在扫描相对较大的区域时效率低下，这些都是为了展示潜在的应用，即构建具有超椭圆界面的流动通道、生物医学设备和工具，如手术工具。我们实验室开发的方法是一种新的表面粗化方法，本质上是用短脉冲激光对金属和韧性聚合物进行烧蚀(Kietzig等人，Langmuir，2009)。将表面暴露在二氧化碳中使表面变得超疏水，这是一个了不起的发现。主要目标是通过激光分割使这种制造技术更快，以便我们能够生产相对较大面积的基板。这种界面是自清洁的，在医疗设备和工具中非常有用，而超疏水聚合物与人体组织具有生物相容性，因此目标应用将在生物医学工程领域，如手术工具、医疗植入物和血管置换。

The goals of this research proposal are the development of a fast production technique using laser femtosecond ablation for nanopatterning various metallic and polymeric substrates and the optimization of the morphology of metallic and polymeric surfaces in order to identify the optimum surface morphology that results maximum superhydrophobicity and superoleophobicity. Our previous developments in the area of manufacturing superhydrophobic substrates were slow and inefficient in scanning relatively large areas, and these are needed to demonstrate potential applications i.e. construction of flow channels with superslippery interfaces, biomedical devices and tools such as surgical tools. The method developed in our lab is a new method for surface roughening, essentially is ablation with short-pulse laser on metals and tough polymers (Kietzig et al., Langmuir, 2009). Exposure of the surface to CO2 renders the surface superhydrophobic, a remarkable discovery. The main objective to make this manufacturing technique faster by laser splitting so that we can produce substrates of relatively large areas. Such interfaces are self-cleaning and extremely useful in medical devices and tools whereas superhydrophobic polymers are biocompatible with human tissues and therefore the targeted application will be in the biomedical engineering field such as surgical tools, medical implants, and blood vessel replacement.