Manipulation of the Superhydrophobicity of Plasma-Etched Polymer Nanostructures.

Manipulation of the Superhydrophobicity of Plasma-Etched Polymer Nanostructures.
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DOI:
10.3390/mi9060304
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发表时间:
2018-06-18
期刊:
影响因子:
3.4
通讯作者:
Choi CH
Choi CH
中科院分区:
工程技术3区
文献类型:
--
作者:
Du K;Jiang Y;Liu Y;Wathuthanthri I;Choi CH

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通过调节疏水涂层的模式和控制纳米结构的层次结构,证明了氧等离子体对纳米纹理表面上液滴流动性的操纵。聚四氟乙烯(PTFE)的旋涂允许高纵横比纳米结构的异质疏水化,并为纳米结构表面提供“粘性疏水性”,而全氟癸基三氯硅烷(FDTS)的自组装单层涂层则导致均匀疏水化和“滑超疏水性”。在旋涂 PTFE 的纳米结构表面上保持高液滴附着力(粘性)的同时,通过氧等离子体蚀刻与激光干涉光刻相结合创建分层纳米结构,增强了液滴接触角,从而实现“粘性超疏水性”。同样,通过采用分层纳米结构,具有 FDTS 自组装单层涂层的光滑纳米结构表面上的液滴迁移率也得到增强,以实现具有调节光滑度的“光滑超疏水性”。
The manipulation of droplet mobility on a nanotextured surface by oxygen plasma is demonstrated by modulating the modes of hydrophobic coatings and controlling the hierarchy of nanostructures. The spin-coating of polytetrafluoroethylene (PTFE) allows for heterogeneous hydrophobization of the high-aspect-ratio nanostructures and provides the nanostructured surface with “sticky hydrophobicity”, whereas the self-assembled monolayer coating of perfluorodecyltrichlorosilane (FDTS) results in homogeneous hydrophobization and “slippery superhydrophobicity”. While the high droplet adhesion (stickiness) on a nanostructured surface with the spin-coating of PTFE is maintained, the droplet contact angle is enhanced by creating hierarchical nanostructures via the combination of oxygen plasma etching with laser interference lithography to achieve “sticky superhydrophobicity”. Similarly, the droplet mobility on a slippery nanostructured surface with the self-assembled monolayer coating of FDTS is also enhanced by employing the hierarchical nanostructures to achieve “slippery superhydrophobicity” with modulated slipperiness.
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