TY - JOUR
T1 - Stand-off fabrication of irregularly shaped, multi-functional hydrophobic and antireflective metal surfaces using femtosecond laser filaments in air
AU - Su, Yue
AU - Wang, Siqi
AU - Yao, Danwen
AU - Fu, Yao
AU - Zang, Hongwei
AU - Xu, Huailiang
AU - Polynkin, P.
N1 - Publisher Copyright:
© 2019
PY - 2019/11/15
Y1 - 2019/11/15
N2 - Multi-functional metal surfaces with simultaneous superhydrophobic and antireflective properties have a wide range of industrial, medical, and defense applications. Rapid fabrication of such multifunctional surfaces on irregularly shaped metals and on a large scale has been a challenge. Here we demonstrate an approach for rapid, standoff fabrication of multi-functional surfaces with super-hydrophobic and antireflective properties on irregularly-shaped samples, by texturing them with femtosecond laser filaments in air, followed by chemical fluorination treatment. Two types of metals with a variety of curved surfaces have been processed at a standoff distance of 1 m: the type 304 stainless steel and the type Ti–6Al–4V titanium alloy. Through laser processing and fluorination, multi-functional surfaces with the water contact angle of over 150° and diffused reflectance below 9%, over the wavelength range from 240 to 2500 nm, have been realized on both metals. Our results suggest that this technique could enable cost-effective and large-scale fabrication of irregularly-shaped, multi-functional surfaces that can be useful for various applications.
AB - Multi-functional metal surfaces with simultaneous superhydrophobic and antireflective properties have a wide range of industrial, medical, and defense applications. Rapid fabrication of such multifunctional surfaces on irregularly shaped metals and on a large scale has been a challenge. Here we demonstrate an approach for rapid, standoff fabrication of multi-functional surfaces with super-hydrophobic and antireflective properties on irregularly-shaped samples, by texturing them with femtosecond laser filaments in air, followed by chemical fluorination treatment. Two types of metals with a variety of curved surfaces have been processed at a standoff distance of 1 m: the type 304 stainless steel and the type Ti–6Al–4V titanium alloy. Through laser processing and fluorination, multi-functional surfaces with the water contact angle of over 150° and diffused reflectance below 9%, over the wavelength range from 240 to 2500 nm, have been realized on both metals. Our results suggest that this technique could enable cost-effective and large-scale fabrication of irregularly-shaped, multi-functional surfaces that can be useful for various applications.
KW - Antireflective
KW - Femtosecond laser filamentation
KW - Irregularly-shaped surfaces
KW - Multi-functional metals
KW - Standoff laser micromachining
KW - Super-hydrophobic
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U2 - 10.1016/j.apsusc.2019.07.261
DO - 10.1016/j.apsusc.2019.07.261
M3 - Article
AN - SCOPUS:85073642968
SN - 0169-4332
VL - 494
SP - 1007
EP - 1012
JO - Applied Surface Science
JF - Applied Surface Science
ER -