Underwater superoleophobicity, anti-oil and ultra-broadband enhanced absorption of metallic surfaces produced by a femtosecond laser inspired by fish and chameleons.
Reported here is the bio-inspired and robust function of underwater superoleophobic, anti-oil metallic surfaces with ultra-broadband enhanced optical absorption obtained through femtosecond laser micromachining. Three distinct surface structures are fabricated using a wide variety of processing parameters. Underwater superoleophobic and anti-oil surfaces containing coral-like microstructures with nanoparticles and mount-like microstructures are achieved. These properties of the as-prepared surfaces exhibit good chemical stability when exposed to various types of oils and when immersed in water with a wide range of pH values. Moreover, coral-like microstructures with nanoparticle surfaces show strongly enhanced optical absorption over a broadband wavelength range from 0.2-25 μm. The potential mechanism for the excellent performance of the coral-like microstructures with a nanoparticle surface is also discussed. This multifunctional surface has potential applications in military submarines, amphibious military aircraft and tanks, and underwater anti-oil optical counter-reconnaissance devices.
State Key Laboratory of High Performance and Complex Manufacturing, School of Mechanical and Electrical Engineering, Central South University, Changsha 410083, China.
K
K
Yin
State Key Laboratory of High Performance and Complex Manufacturing, School of Mechanical and Electrical Engineering, Central South University, Changsha 410083, China.
Y X
YX
Song
State Key Laboratory of High Performance and Complex Manufacturing, School of Mechanical and Electrical Engineering, Central South University, Changsha 410083, China.
X R
XR
Dong
State Key Laboratory of High Performance and Complex Manufacturing, School of Mechanical and Electrical Engineering, Central South University, Changsha 410083, China.
C
C
Wang
State Key Laboratory of High Performance and Complex Manufacturing, School of Mechanical and Electrical Engineering, Central South University, Changsha 410083, China.
J A
JA
Duan
D000818:Animals; D005399:Fishes; D057927:Hydrophobic and Hydrophilic Interactions; D007834:Lasers; D008116:Lizards; D053758:Nanoparticles / Q000737:chemistry; D009821:Oils / Q000737:chemistry*; D055585:Physical Phenomena; D013499:Surface Properties; D014867:Water / Q000737:chemistry*
D009821:Oils; D014867:Water