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DOI | 10.1021/acs.langmuir.7b03699 |
Fabrication of Biomimetic Fog-Collecting Superhydrophilic-Superhydrophobic Surface Micropatterns Using Femtosecond Lasers | |
Kostal, Elisabeth1; Stroj, Sandra2; Kasemann, Stephan1; Matylitsky, Victor3; Domke, Matthias2 | |
通讯作者 | Kostal, Elisabeth |
来源期刊 | LANGMUIR |
ISSN | 0743-7463 |
出版年 | 2018 |
卷号 | 34期号:9页码:2933-2941 |
英文摘要 | The exciting functionalities of natural super hydrophilic and superhydrophobic surfaces served as inspiration for a variety of biomimetic designs. In particular, the combination of both extreme wetting states to micropatterns opens up interesting applications, as the example of the fog collecting Namib Desert beetle shows. In this paper, the beetle’s elytra were mimicked by a novel three-step fabrication method to increase the fog-collection efficiency of glasses. In the first step, a double-hierarchical surface structure was generated on Pyrex wafers using femtosecond laser structuring, which amplified the intrinsic wetting property of the surface and made it superhydrophilic (water contact angle < 10 degrees). In the second step, a Teflon-like polymer (CF2)(n) was deposited by a plasma process superhydrophobic (water contact angle > 150 degrees). In the last step, the Teflon-like coating was selectively removed by fs-laser ablation to uncover superhydrophilic spots below the superhydrophobic surface, following the example of the Namib Desert beetle’s fog-collecting elytra. To investigate the influence on the fog-collection behavior, (super)hydrophilic, (super)hydrophobic, and low and high contrast wetting patterns were fabricated on glass wafers using selected combinations of these three processing steps and were exposed to fog in an artificial nebulizer setup. This experiment revealed that high-contrast wetting patterns collected the highest amount of fog and enhanced the fog-collection efficiency by nearly 60% compared to pristine Pyrex glass. The comparison of the fog-collection behavior of the six samples showed that the superior fog-collection efficiency of surface patterns with extreme wetting contrast is due to the combination of water attraction and water repellency: the superhydrophilic spots act as drop accumulation areas, whereas the surrounding superhydrophobic areas allow a fast water transportation caused by gravity. The presented method enables a fast and flexible surface functionalization of a broad range of materials including transparent substrates, which offers exciting possibilities for the design of biomedical and microfluidic devices. |
类型 | Article |
语种 | 英语 |
国家 | Austria |
收录类别 | SCI-E |
WOS记录号 | WOS:000427095400003 |
WOS关键词 | DESERT BEETLE ; SILICON SURFACES ; GLASS-SURFACE ; WETTABILITY ; WATER ; MIMICKING ; ROUGHNESS ; PATTERNS ; ARRAYS ; LEAF |
WOS类目 | Chemistry, Multidisciplinary ; Chemistry, Physical ; Materials Science, Multidisciplinary |
WOS研究方向 | Chemistry ; Materials Science |
资源类型 | 期刊论文 |
条目标识符 | http://119.78.100.177/qdio/handle/2XILL650/211528 |
作者单位 | 1.Vorarlberg Univ Appl Sci, Res Ctr Microtechnol, Hochschulstr 1, A-6850 Dornbirn, Austria; 2.Vorarlberg Univ Appl Sci, Res Ctr Microtechnol, Josef Ressel Ctr Mat Proc Ultrashort Pulsed Laser, Hochschulstr 1, A-6850 Dornbirn, Austria; 3.Spectra Phys, Feldgut 9, A-6830 Rankweil, Austria |
推荐引用方式 GB/T 7714 | Kostal, Elisabeth,Stroj, Sandra,Kasemann, Stephan,et al. Fabrication of Biomimetic Fog-Collecting Superhydrophilic-Superhydrophobic Surface Micropatterns Using Femtosecond Lasers[J],2018,34(9):2933-2941. |
APA | Kostal, Elisabeth,Stroj, Sandra,Kasemann, Stephan,Matylitsky, Victor,&Domke, Matthias.(2018).Fabrication of Biomimetic Fog-Collecting Superhydrophilic-Superhydrophobic Surface Micropatterns Using Femtosecond Lasers.LANGMUIR,34(9),2933-2941. |
MLA | Kostal, Elisabeth,et al."Fabrication of Biomimetic Fog-Collecting Superhydrophilic-Superhydrophobic Surface Micropatterns Using Femtosecond Lasers".LANGMUIR 34.9(2018):2933-2941. |
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