Institute of Electronic Structure and Laser, Foundation for Research and Technology - Hellas, P.O. Box 1527, 711 10 Heraklion Crete, Greece.
Langmuir. 2013 Jul 30;29(30):9277-90. doi: 10.1021/la400533u. Epub 2013 Jun 21.
There is a demand for surfaces with new functional properties in almost all industrial branches. During the next few years, research input will be required for the development of coatings exhibiting an easy-to-clean or self-cleaning ability, switchability so that they can act as sensors/actuators, and defined tribological/mechanical properties and long-term stability. To achieve such behavior, the development of new advanced functional coatings that exhibit the proper chemistry and surface structure is necessary. In this Feature Article, we provide a review of the research activities in our laboratory on the development of functional and, especially, reversibly switchable polymer surfaces where the emphasis is on controlling their wettability. We will first discuss the fabrication of superhydrophobic surfaces by hierarchically micro- and nanostructuring a substrate surface with an ultrafast laser followed by appropriate hydrophobization. Then, we will summarize the development of surfaces that can alter their wetting behavior in response to changes in external stimuli such as humidity and light illumination. Finally, we will present our investigations on utilizing responsive (organic) coatings on hierarchically roughened substrates for the development of surfaces, which would be able to switch reversibly from superhydrophilic to superhydrophobic and water-repellent in response to an external stimulus (in this case, pH).
几乎所有工业领域都需要具有新功能特性的表面。在未来几年，需要投入研究来开发具有易清洁或自清洁能力、可切换性能（使其能够充当传感器/执行器）以及特定摩擦学/机械性能和长期稳定性的涂层。为了实现这种性能，需要开发具有适当化学性质和表面结构的新型先进功能涂层。在这篇专题文章中，我们回顾了我们实验室在开发功能性，特别是可还原切换聚合物表面方面的研究活动，重点是控制其润湿性。我们将首先讨论通过超快激光对基底表面进行分级微纳结构化，然后进行适当的疏水处理，来制备超疏水表面。然后，我们将总结可响应外部刺激（如湿度和光照）改变润湿行为的表面的开发。最后，我们将介绍我们在利用分级粗糙化基底上的响应性（有机）涂层来开发表面方面的研究，这些表面能够在外部刺激（在这种情况下为 pH）的作用下，从超亲水可逆切换到超疏水和拒水状态。
