Manipulation of the superhydrophobicity of plasma-etched polymer nanostructures

TY - JOUR

T1 - Manipulation of the superhydrophobicity of plasma-etched polymer nanostructures

AU - Du, Ke

AU - Jiang, Youhua

AU - Liu, Yuyang

AU - Wathuthanthri, Ishan

AU - Choi, Chang Hwan

N1 - Publisher Copyright: © 2018 by the authors.

PY - 2018/6/18

Y1 - 2018/6/18

N2 - 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-assembledmonolayer 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.

AB - 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-assembledmonolayer 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.

KW - Droplet mobility

KW - Nanostructures

KW - Plasma etching

KW - Polymer

KW - Superhydrophobicity

UR - http://www.scopus.com/inward/record.url?scp=85048653357&partnerID=8YFLogxK

U2 - 10.3390/mi9060304

DO - 10.3390/mi9060304

M3 - 文章

AN - SCOPUS:85048653357

SN - 2072-666X

VL - 9

JO - Micromachines

JF - Micromachines

IS - 6

M1 - 304

ER -