Both antireflection and superhydrophobicity structures achieved by direct laser interference nanomanufacturing

Inspired by nature, a number of techniques have been developed to fabricate the bionic structures of lotus leaves and moth eyes in order to realize the extraordinary functions of self-cleaning and antireflection. Compared with the existing technologies, we present a straightforward method to fabrica...

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Bibliographic Details
Published in:Journal of applied physics 2014-06, Vol.115 (23)
Main Authors: Wang, Dapeng, Wang, Zuobin, Zhang, Ziang, Yue, Yong, Li, Dayou, Qiu, Renxi, Maple, Carsten
Format: Article
Language:English
Subjects:
ANTIREFLECTION COATINGS
Applied physics
Bionics
CLEANING
CONDENSED MATTER PHYSICS, SUPERCONDUCTIVITY AND SUPERFLUIDITY
Contact angle
EFFICIENCY
Hydrophobic surfaces
Hydrophobicity
INTERFERENCE
LASER BEAM MACHINING
Laser beams
LASER RADIATION
Lasers
MASS
Mass production
PERIODICITY
POLARIZATION
Pretreatment
Reflectance
SURFACES
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Summary:Inspired by nature, a number of techniques have been developed to fabricate the bionic structures of lotus leaves and moth eyes in order to realize the extraordinary functions of self-cleaning and antireflection. Compared with the existing technologies, we present a straightforward method to fabricate well-defined micro and nano artificial bio-structures in this work. The proposed method of direct laser interference nanomanufacturing (DLIN) takes a significant advantage of high efficiency as only a single technological procedure is needed without pretreatment, mask, and pattern transfer processes. Meanwhile, the corresponding structures show both antireflection and superhydrophobicity properties simultaneously. The developed four-beam nanosecond laser interference system configuring the TE-TE-TE-TE and TE-TE-TE-TM polarization modes was set up to generate periodic micro cone and hole structures with a huge number of nano features on the surface. The theoretical and experimental results have shown that the periodic microcone structure exhibits excellent properties with both a high contact angle (CA = 156.3°) and low omnidirectional reflectance (5.9–15.4%). Thus, DLIN is a novel and promising method suitable for mass production of self-cleaning and antireflection surface structures.
ISSN:0021-8979
1089-7550
DOI:10.1063/1.4883763