Laser & Optoelectronics Progress, Volume. 54, Issue 10, 101408(2017)
Superhydrophobic Surface of Aluminium Base Induced by Femtosecond Laser
The surface contact angles of aluminum-based materials is regulated and controlled by using femtosecond laser pulses with different energies, and the transformation mechanism of wettability is analyzed and studied. The results show that the final stable wettability state of aluminum-based material surfaces after the femtosecond laser processing and aging treatment is related to the laser energy and the aging time. With the increase of the laser energy, the surface contact angle is changed from 70° to above 150°. The morphology, roughness and chemical compositions of aluminum-based surfaces are studied under different pulse energy processing conditions. The results show that the wettability of a laser-processed sample changes from a hydrophilic state to a final super-hydrophobic state. The super-hydrophobic surfaces can be obtained in different pulse energy regions, but there are non-periodic or periodic structural differences in their surface microstructures, and the formation mechanisms of hydrophobic properties are different.
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Yang Qibiao, Deng Bo, Wang Yutao, Xiao Chenguang, Wang Xing, Chen Lie, Zheng Zhong, Lou Deyuan, Tao Qing, Zhai Zhongsheng, Bennett Peter, Liu Dun. Superhydrophobic Surface of Aluminium Base Induced by Femtosecond Laser[J]. Laser & Optoelectronics Progress, 2017, 54(10): 101408
Category: Lasers and Laser Optics
Received: Mar. 21, 2017
Accepted: --
Published Online: Oct. 9, 2017
The Author Email: Qibiao Yang (yangqibiao@mail.hbut.edu.cn)