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Author:

Bai, Xue (Bai, Xue.) | Yang, Qing (Yang, Qing.) | Fang, Yao (Fang, Yao.) | Yong, Jiale (Yong, Jiale.) | Bai, Yongkang (Bai, Yongkang.) | Zhang, Jiwen (Zhang, Jiwen.) | Hou, Xun (Hou, Xun.) | Chen, Feng (Chen, Feng.) (Scholars:陈烽)

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EI SCIE Scopus Engineering Village

Abstract:

Smart superhydrophobic surfaces with reversible wettability are attracting increasing attention. However, most of the reported smart superhydrophobic surfaces switch their wettability through reversibly changing surface chemistry rather than surface microstructure. In this paper, femtosecond laser direct writing was exploited to create microgroove array structure on the shape-memory polymer (SMP) substrates. The groove-structured surface exhibited superhydrophobicity and anisotropic wettability after fluoroalkylsilane modification. Due to the excellent shape-memory property of the SMP substrate, the morphology of the microgroove array could be transformed between original stand shape and deformed shape in response to heat. Correspondingly, water droplet on the surface was reversibly changed between sliding and sticky states through alternant pressing and heating treatments, indicating switchable adhesion of the laser-induced microgroove array. Meanwhile, the anisotropic wettability could also recover with the restoration of the grooved microstructure. Such wettability conversion on the resultant surface could be cycled 10 times without decline of the superhydrophobicity and anisotropic wettability. The anisotropic superhydrophobic SMP surface with both ultralow and ultrahigh water adhesion was successfully applied in rewritable liquid pattern, droplet-based microreactor, and gas sensing. By taking advantage of femtosecond laser, reversible microstructures and surface wettability can be obtained on various SMP substrates. We believe that such surfaces with thermal-responsive superhydrophobicity, anisotropic wettability, and switchable adhesion will have enormous potential applications in non-loss droplet transfer, biological detection, and lab-on-chip devices. © 2020 Elsevier B.V.

Keyword:

Adhesion Anisotropy Drops Femtosecond lasers Microstructure Morphology Shape-memory polymer Substrates Superhydrophobicity Surface properties Wetting

Author Community:

  • [ 1 ] [Bai, Xue]State Key Laboratory for Manufacturing System Engineering and Shaanxi Key Laboratory of Photonics Technology for Information, School of Electronic Science and Engineering, Faculty of Electronic and Information Engineering, Xi'an Jiaotong University, Xi'an; 710049, China
  • [ 2 ] [Bai, Xue]The International Joint Research Laboratory for Micro/Nano Manufacturing and Measurement Technologies, Xi'an Jiaotong University, Xi'an; 710049, China
  • [ 3 ] [Yang, Qing]School of Mechanical Engineering, Xi'an Jiaotong University, Xi'an; 710049, China
  • [ 4 ] [Yang, Qing]The International Joint Research Laboratory for Micro/Nano Manufacturing and Measurement Technologies, Xi'an Jiaotong University, Xi'an; 710049, China
  • [ 5 ] [Fang, Yao]State Key Laboratory for Manufacturing System Engineering and Shaanxi Key Laboratory of Photonics Technology for Information, School of Electronic Science and Engineering, Faculty of Electronic and Information Engineering, Xi'an Jiaotong University, Xi'an; 710049, China
  • [ 6 ] [Fang, Yao]The International Joint Research Laboratory for Micro/Nano Manufacturing and Measurement Technologies, Xi'an Jiaotong University, Xi'an; 710049, China
  • [ 7 ] [Yong, Jiale]State Key Laboratory for Manufacturing System Engineering and Shaanxi Key Laboratory of Photonics Technology for Information, School of Electronic Science and Engineering, Faculty of Electronic and Information Engineering, Xi'an Jiaotong University, Xi'an; 710049, China
  • [ 8 ] [Yong, Jiale]The International Joint Research Laboratory for Micro/Nano Manufacturing and Measurement Technologies, Xi'an Jiaotong University, Xi'an; 710049, China
  • [ 9 ] [Bai, Yongkang]School of Chemical Engineering and Technology, Shaanxi Key Laboratory of Energy Chemical Process Intensification, Institute of Polymer Science in Chemical Engineering, Xi'an Jiaotong University, Xi'an; Shaanxi; 710049, China
  • [ 10 ] [Zhang, Jiwen]School of Chemical Engineering and Technology, Shaanxi Key Laboratory of Energy Chemical Process Intensification, Institute of Polymer Science in Chemical Engineering, Xi'an Jiaotong University, Xi'an; Shaanxi; 710049, China
  • [ 11 ] [Hou, Xun]State Key Laboratory for Manufacturing System Engineering and Shaanxi Key Laboratory of Photonics Technology for Information, School of Electronic Science and Engineering, Faculty of Electronic and Information Engineering, Xi'an Jiaotong University, Xi'an; 710049, China
  • [ 12 ] [Chen, Feng]State Key Laboratory for Manufacturing System Engineering and Shaanxi Key Laboratory of Photonics Technology for Information, School of Electronic Science and Engineering, Faculty of Electronic and Information Engineering, Xi'an Jiaotong University, Xi'an; 710049, China
  • [ 13 ] [Chen, Feng]The International Joint Research Laboratory for Micro/Nano Manufacturing and Measurement Technologies, Xi'an Jiaotong University, Xi'an; 710049, China

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Source :

Chemical Engineering Journal

ISSN: 1385-8947

Year: 2020

Volume: 400

1 3 . 2 7 3

JCR@2020

1 3 . 2 7 3

JCR@2020

ESI Discipline: ENGINEERING;

ESI HC Threshold:59

CAS Journal Grade:1

Cited Count:

WoS CC Cited Count: 27

SCOPUS Cited Count: 96

ESI Highly Cited Papers on the List: 0 Unfold All

WanFang Cited Count:

Chinese Cited Count:

30 Days PV: 16

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