In this Letter, the dewetting behavior of superhydrophobic condensing surfaces under a tangential AC electric field is reported. The surface coverage of condensed droplets only exhibits a negligible increase with time. The jumping frequency of droplets is enhanced. The AC electric field motivates the dynamic transition of droplets from stretch to recoil, resulting in the counterforce propelling droplet jumping. The considerable horizontal component of jumping velocity facilitates droplet departure from superhydrophobic surfaces. Both the amplitude and frequency of AC voltage are important factors for droplet departure and dewetting effect. Thereby, the tangential electric field provides a unique and easily implementable approach to enhance droplet removal from superhydrophobic condensing surfaces.
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17 October 2016
Research Article|
October 17 2016
Droplet condensation on superhydrophobic surfaces with enhanced dewetting under a tangential AC electric field
Xinzhu Yan;
Xinzhu Yan
1State Key Laboratory of Power Transmission Equipment and System Security and New Technology School of Electrical Engineering,
Chongqing University
, Chongqing 400044, China
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Jian Li;
Jian Li
a)
1State Key Laboratory of Power Transmission Equipment and System Security and New Technology School of Electrical Engineering,
Chongqing University
, Chongqing 400044, China
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Licheng Li;
Licheng Li
2
The China Southern Power Grid
, Guangzhou 510080, China
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Zhengyong Huang;
Zhengyong Huang
a)
1State Key Laboratory of Power Transmission Equipment and System Security and New Technology School of Electrical Engineering,
Chongqing University
, Chongqing 400044, China
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Feipeng Wang;
Feipeng Wang
1State Key Laboratory of Power Transmission Equipment and System Security and New Technology School of Electrical Engineering,
Chongqing University
, Chongqing 400044, China
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Yuan Wei
Yuan Wei
1State Key Laboratory of Power Transmission Equipment and System Security and New Technology School of Electrical Engineering,
Chongqing University
, Chongqing 400044, China
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a)
Electronic addresses: lijian@cqu.edu.cn and huangzhengyong@cqu.edu.cn
Appl. Phys. Lett. 109, 161601 (2016)
Article history
Received:
June 07 2016
Accepted:
September 27 2016
Citation
Xinzhu Yan, Jian Li, Licheng Li, Zhengyong Huang, Feipeng Wang, Yuan Wei; Droplet condensation on superhydrophobic surfaces with enhanced dewetting under a tangential AC electric field. Appl. Phys. Lett. 17 October 2016; 109 (16): 161601. https://doi.org/10.1063/1.4964762
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