Zhang Junping, Wu Lei, Li Bucheng, Li Lingxiao, Seeger Stefan, Wang Aiqin
Center of Eco-material and Green Chemistry, Lanzhou Institute of Chemical Physics, Chinese Academy of Sciences , Lanzhou, PR China.
Langmuir. 2014 Dec 2;30(47):14292-9. doi: 10.1021/la503300k. Epub 2014 Nov 17.
The newly developed Nepenthes pitcher (NP)-inspired slippery surfaces, formed by immobilizing fluoroliquids on lotus leaf (LL)-inspired superoleophobic surfaces, are of great general interest, whereas there are many interesting phenomena and fundamental scientific issues remaining to be unveiled. Here we present our findings of the effects of evaporation of the fluoroliquid, an inevitable process in most cases, -induced transition from NP-inspired to LL-inspired surfaces on the wettability, transparency, and self-cleaning property of the surfaces. The transition is controlled by regulating the evaporation temperature of the model fluoroliquid, Krytox100. The evaporation of Krytox100 has great a influence on the wettability, transparency, and self-cleaning property. An intermediate "sticky" state is observed in the transition process. We believe that our findings in the transition process are helpful in understanding the similarities and differences between the NP-inspired and LL-inspired surfaces and in designing new bioinspired antiwetting surfaces and exploring their potential applications.
新开发的受猪笼草捕虫笼（NP）启发的光滑表面，是通过将氟化物液体固定在受荷叶（LL）启发的超疏油表面上形成的，引起了广泛关注，然而仍有许多有趣的现象和基础科学问题有待揭示。在此，我们展示了氟化物液体蒸发（在大多数情况下这是一个不可避免的过程）诱导表面从受NP启发转变为受LL启发，对表面的润湿性、透明度和自清洁性能所产生影响的研究结果。这种转变通过调节模型氟化物液体Krytox100的蒸发温度来控制。Krytox100的蒸发对润湿性、透明度和自清洁性能有很大影响。在转变过程中观察到一种中间“粘性”状态。我们相信，我们在转变过程中的研究结果有助于理解受NP启发和受LL启发的表面之间的异同，以及设计新的仿生抗湿表面并探索其潜在应用。
