Fabrication of Antireflection Micro/Nanostructures on the Surface of Aluminum Alloy by Femtosecond Laser

Mengdan Du; Quanquan Sun; Wei Jiao; Lifeng Shen; Xiao Chen; Junfeng Xiao; Jianfeng Xu

doi:10.3390/mi12111406

Micromachines (Nov 2021)

Fabrication of Antireflection Micro/Nanostructures on the Surface of Aluminum Alloy by Femtosecond Laser

Mengdan Du,
Quanquan Sun,
Wei Jiao,
Lifeng Shen,
Xiao Chen,
Junfeng Xiao,
Jianfeng Xu

Affiliations

Mengdan Du: State Key Laboratory of Digital Manufacturing Equipment and Technology, School of Mechanical Science and Engineering, Huazhong University of Science and Technology, Wuhan 430074, China
Quanquan Sun: Shanghai Aerospace Control Technology Institute, Shanghai 201109, China
Wei Jiao: State Key Laboratory of Digital Manufacturing Equipment and Technology, School of Mechanical Science and Engineering, Huazhong University of Science and Technology, Wuhan 430074, China
Lifeng Shen: Shanghai Aerospace Control Technology Institute, Shanghai 201109, China
Xiao Chen: State Key Laboratory of Digital Manufacturing Equipment and Technology, School of Mechanical Science and Engineering, Huazhong University of Science and Technology, Wuhan 430074, China
Junfeng Xiao: State Key Laboratory of Digital Manufacturing Equipment and Technology, School of Mechanical Science and Engineering, Huazhong University of Science and Technology, Wuhan 430074, China
Jianfeng Xu: State Key Laboratory of Digital Manufacturing Equipment and Technology, School of Mechanical Science and Engineering, Huazhong University of Science and Technology, Wuhan 430074, China

DOI: https://doi.org/10.3390/mi12111406
Journal volume & issue: Vol. 12, no. 11
p. 1406

Abstract

Read online

Designed micro-nano structures on the surface of aluminum alloy provide excellent light trapping properties that can be used extensively in thermal photovoltaics, sensors, etc. However, the fabrication of high-performance antireflective micro-nano structures on aluminum alloy is challenging because aluminum has shallow intrinsic losses and weak absorption. A two-step strategy is proposed for fabricating broadband antireflection structures by superimposing nanostructures onto microscale structures. By optimizing the processing parameters of femtosecond laser, the average reflectances of 2.6% within the visible spectral region (400–800 nm) and 5.14% within the Vis-NIR spectral region (400–2500 nm) are obtained.

Published in Micromachines

ISSN: 2072-666X (Online)
Publisher: MDPI AG
Country of publisher: Switzerland
LCC subjects: Technology: Mechanical engineering and machinery
Website: https://www.mdpi.com/journal/micromachines

About the journal

Abstract

Keywords