Zhipeng Wu, Kai Yin, Junrui Wu, Shuai Yang, Zhuo Zhu. Femtosecond Laser Micro-Nano Fabrication of Underwater Gas Wettable Surface[J]. Laser & Optoelectronics Progress, 2020, 57(11): 111418
- Laser & Optoelectronics Progress
- Vol. 57, Issue 11, 111418 (2020)
Fig. 1. Relationship between wettability of solid substrates in air and water. (a) Schematic of water contact angle (θw) in air and the bubble contact angle (θb) in water; (b) superhydrophobic/superaerophilic surface; (c) superhydrophilic/superaerophobic surface
Fig. 2. Schematic diagram of maximum (θmax) and minimum (θmin) static underwater bubble contact angles
![Different underwater superaerophobic surfaces fabricated by femtosecond laser. (a)(b) Aluminium alloy surface[76];(c)-(f) silicon surface[77]](/Images/icon/loading.gif){kind=icon}
Fig. 3. Different underwater superaerophobic surfaces fabricated by femtosecond laser. (a)(b) Aluminium alloy surface[76];(c)-(f) silicon surface[77]
Fig. 4. Different underwater superaerophilic surfaces fabricated by femtosecond laser. (a)-(c) PDMS surface[77]; (d)-(h) aluminum surface and corresponding buoyancy device[82]; (i)(j) PTFE surface[83]
Fig. 5. Switchable underwater superaerophilic/superaerophobic PTFE surfaces fabricated by femtosecond laser[96]. (a)(b) Surface microstructure; (c)(d) reversible switching between underwater superaerophilicity and superaerophobicity
Fig. 6. Switchable underwater superaerophilic/superaerophobic PDMS surface fabricated by femtosecond laser[97].(a)-(c) Surface microstructure; (d)-(g) switching between underwater superaerophilicity and superaerophobicity
Fig. 7. Switchable underwater superaerophilic/superaerophobic titanium surface fabricated by femtosecond laser.(a)-(d) Sample treated by Jiao et al.[98]; (e)-(i) sample fabricated by Jiao et al.[99]
Fig. 8. Reversible switching between underwater superaerophilicity and superaerophobicity on the femtosecond laser treated aluminum surface[100]
Fig. 9. Underwater superaerophilic PTFE surfaces with shape gradient fabricated by femtosecond laser. (a)-(d) Sample treated by Yin et al.[104]; (e)-(h) sample treated by Duan et al.[105]
Fig. 10. PTFE surfaces with underwater asymmetric wettability fabricated by femtosecond laser[106]. (a) Schematic of the laser ablation process; (b)(c) surface microstructure; (d)(e) underwater bubble contact angle on both sides
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