Hydrophilic patterning of superhydrophobic surfaces by atmospheric-pressure plasma jet
Hydrophilic patterning of superhydrophobic surfaces by atmospheric-pressure plasma jet
复制标题
通过大气压等离子射流在超疏水表面形成亲水图案
DOI：
10.1049/mnl.2014.0590
复制
发表时间：
2015-02-01
影响因子：
1.3
通讯作者：
Liu, Xin
中科院分区：
文献类型：
--
作者：
Chen, Faze;Xu, Wenji;Liu, Xin
利用大气压等离子体射流技术在超疏水表面制备亲水图案。采用扫描电子显微镜、傅里叶变换红外光谱仪、X射线光电子能谱仪和水接触角测量仪对表面形貌、化学组成和润湿性进行了研究。结果表明，暴露于APPJ的超疏水区域可以完全转化为超亲水区域，而不改变宏观和微观表面形貌。超疏水性向超亲水性的转变是由于疏水性含氟官能团的减少和亲水性含氧官能团的增加。结合扫描和掩模技术，APPJ处理可以很容易地在各种超疏水基底上制作复杂的大面积润湿性对比图案。此外，保留固有的微观结构，使表面恢复超疏水性，只有通过使用表面疏水性。这导致超亲水性和超疏水性之间的快速可逆转变。
An atmospheric-pressure plasma jet (APPJ) has been developed to fabricate hydrophilic patterns on superhydrophobic surfaces. The surface morphologies, chemical compositions and wettability were investigated using scanning electron microscopy, Fourier-transform infrared spectrophotometry, X-ray photoelectron spectroscopy and water contact angle measurement. The results show that the superhydrophobic areas exposed to the APPJ could be completely converted to superhydrophilic without changing the macro and microsurface morphologies. The transition from superhydrophobicity to superhydrophilicity is because of the decrease of hydrophobic fluorine-containing functional groups and the increase of the hydrophilic oxygen-containing functional groups. Combined with scanning and mask technology, complex and large-area wettability contrast patterns can be easily fabricated on various superhydrophobic substrates by the APPJ treatment. Additionally, the retention of intrinsic microstructures enables the surface to recover superhydrophobicity only by using surface fluorination. This results in a rapid reversible transition between superhydrophilicity and superhydrophobicity.