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Author:

Yong Jiale (Yong Jiale.) | Singh Subhash C (Singh Subhash C.) | Zhan Zhibing (Zhan Zhibing.) | Chen Feng (Chen Feng.) (Scholars:陈烽) | Guo Chunlei (Guo Chunlei.)

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Abstract:

In this paper, the reversible switching between underwater (super-) aerophilicity and superaerophobicity was achieved on various femtosecond (fs) laser-induced superhydrophobic surfaces. A range of materials including Al, stainless steel, Cu, Ni, Si, poly(tetrafluoroethylene), and polydimethylsiloxane were first transformed to superhydrophobic after the formation of surface microstructures through fs laser treatment. These surfaces showed (super-) aerophilicity when immersed in water. In contrast, if the surface was prewetted with ethanol and then dipped into water, the surfaces showed superaerophobicity in water. The underwater aerophilicity of the superhydrophobic substrates could easily recover by drying. The switching between the underwater aerophilicity and superaerophobicity can be fast repeated many cycles and is substrate-independent in stark contrast to common wettability-switchable surfaces based on stimuli-responsive chemistry. Therefore, the as-prepared superhydrophobic surfaces can capture or repel air bubbles in water by selectively switching between underwater superaerophobicity and aerophilicity. Finally, we demonstrated that the underwater bubbles could pass through an underwater aerophilic porous sheet but were intercepted by an underwater superaerophobic porous sheet. The selective passage of the underwater bubbles was achieved by the reversible switching between the underwater aerophilicity and superaerophobicity. We believe that this substrate-independent and fast method of switching air wettability has important applications in controlling air behavior in water.

Keyword:

bubble wettability femtosecond laser switchable wettability underwater superaerophilicity underwater superaerophobicity

Author Community:

  • [ 1 ] [Yong Jiale;Singh Subhash C;Zhan Zhibing;Guo Chunlei]The Institute of Optics , University of Rochester , Rochester , New York 14627 , United States.
  • [ 2 ] [Yong Jiale;Chen Feng]Shaanxi Key Laboratory of Photonics Technology for Information, School of Electronics & Information Engineering , Xi'an Jiaotong University , Xi'an 710049 , P. R. China.
  • [ 3 ] [Yong, Jiale]Univ Rochester, Inst Opt, Rochester, NY 14627 USA
  • [ 4 ] [Singh, Subhash C.]Univ Rochester, Inst Opt, Rochester, NY 14627 USA
  • [ 5 ] [Zhan, Zhibing]Univ Rochester, Inst Opt, Rochester, NY 14627 USA
  • [ 6 ] [Guo, Chunlei]Univ Rochester, Inst Opt, Rochester, NY 14627 USA
  • [ 7 ] [Yong, Jiale]Xi An Jiao Tong Univ, Sch Elect & Informat Engn, Shaanxi Key Lab Photon Technol Informat, Xian 710049, Peoples R China
  • [ 8 ] [Chen, Feng]Xi An Jiao Tong Univ, Sch Elect & Informat Engn, Shaanxi Key Lab Photon Technol Informat, Xian 710049, Peoples R China

Reprint Author's Address:

  • Univ Rochester, Inst Opt, Rochester, NY 14627 USA.; Chen, F (reprint author), Xi An Jiao Tong Univ, Sch Elect & Informat Engn, Shaanxi Key Lab Photon Technol Informat, Xian 710049, Peoples R China.

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Source :

ACS applied materials & interfaces

ISSN: 1944-8252

Year: 2019

Issue: 8

Volume: 11

Page: 8667-8675

8 . 7 5 8

JCR@2019

9 . 2 2 9

JCR@2020

ESI Discipline: MATERIALS SCIENCE;

ESI HC Threshold:131

JCR Journal Grade:2

CAS Journal Grade:2

Cited Count:

WoS CC Cited Count: 49

SCOPUS Cited Count: 55

ESI Highly Cited Papers on the List: 0 Unfold All

WanFang Cited Count:

Chinese Cited Count:

30 Days PV: 5

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