General Strategy toward Laser Single-Step Generation of Multiscale Anti-Reflection Structures by Marangoni Effect

Yin, Jingbo; Yan, Huangping; Dunzhu, Gesang; Wang, Rui; Cao, Shengzhu; Zhou, Rui; Li, Yuanzhe

doi:10.3390/mi13091491

Cited by 3 publications

(3 citation statements)

References 40 publications

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“…However, manufacturing high-performance, uniformly large-area subwavelength antireflective structures poses significant challenges. Yin et al [72] proposed a laser surface processing strategy based on the Marangoni effect, and through the optimization of laser parameters, they achieved a multi-scale structure with broadband anti-reflection enhancement (figure 8(d)). When the laser's energy density is 95.5 J•cm −2 and the scanning distance is 5 µm, a bionic surface with low reflectance was obtained.…”

Section: Structural Color Bionic Surfacesmentioning

confidence: 99%

Laser-based bionic manufacturing

Li,

Zhang,

Jakobi

et al. 2024

Int. J. Extrem. Manuf.

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Over millions of years of natural evolution, organisms have developed nearly perfect structures and functions. The self-fabrication of organisms serves as a valuable source of inspiration for designing the next-generation of structural materials, and is driving the future paradigm shift of modern materials science and engineering. However, the complex structures and multifunctional integrated optimization of organisms far exceed the capability of artificial design and fabrication technology, and new manufacturing methods are urgently needed to achieve efficient reproduction of biological functions. As one of the most valuable advanced manufacturing technologies of the 21st century, laser processing technology provides an efficient solution to the critical challenges of bionic manufacturing. This review outlines the processing principles, manufacturing strategies, potential applications, challenges, and future development outlook of laser processing in bionic manufacturing domains. Three primary manufacturing strategies for laser-based bionic manufacturing are proposed: subtractive manufacturing, equivalent manufacturing, and additive manufacturing. The progress and trends in bionic subtractive manufacturing applied to micro/nano structural surfaces, bionic equivalent manufacturing for surface strengthening, and bionic additive manufacturing aiming to achieve bionic spatial structures, are reported. Finally, the key problems faced by laser-based bionic manufacturing, its limitations, and the development trends of its existing technologies are discussed.

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Section: Structural Color Bionic Surfacesmentioning

confidence: 99%

Laser-based bionic manufacturing

Li,

Zhang,

Jakobi

et al. 2024

Int. J. Extrem. Manuf.

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“…This reduces the distribution density of the microcolumns, decreasing the duty ratio and limiting its anti-reflection performance. Interestingly, the size of recast layer formed by phase explosion and Marangoni flow during laser processing is much smaller than the spot size [ 29 , 30 ]. Meanwhile, the distribution of recast layer formed by solidification of molten material is related to scanning path.…”

Section: Introductionmentioning

confidence: 99%

Thermal-Assisted Laser Fabrication of Broadband Ultralow Reflectance Surface by Combining Marangoni Flow with In Situ Deposition

et al. 2023

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Functional surfaces with broadband ultralow optical reflectance have many potential applications in the fields of enhancing solar energy utilization, stray light shielding, infrared stealth, and so on. To fabricate broadband anti-reflection surfaces with low cost, high quality, and more controllability, a strategy of preparing multi-scale structures by thermal-assisted nanosecond laser was proposed. This strategy combines laser ablation with Marangoni flow of molten materials and in situ deposition of nanoparticles. The thermal-assisted strategy increases the depth to width ratio of the anti-reflection structures. The average reflectance of laser-textured TC4 (Ti-6Al-4V) surface is as low as 1.71% in the wavelength range of 200–2250 nm and 7.8% in the 2500–25,000 nm. The ultra-low reflectance surface has a significantly enhanced photothermal conversion performance. Meanwhile, the anti-reflection effect can be extended to the mid-infrared band, which has potential stealth application prospect. This synergetic manufacturing strategy has wide adaptability of materials, which provides new paths for the preparation of broadband ultralow reflectance surface. Moreover, this thermal-assisted laser fabrication strategy is prospective in the preparation of other functional micro-nano structures.

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“…Polman et al [15] designed a two-dimensional periodic array of subwavelength silicon nanocylinders as Mie resonances with strong substrate coupling, producing almost zero total reflectance throughout the entire spectral range from ultraviolet to near-infrared. Yan et al [16] induced nanoscale composite material structures with nano textures on the surface of glass via an infrared femtosecond laser method. The average reflectivity decreased by 45.5% in the wavelength range of 300-800 nm compared to untreated glass.…”

Section: Introductionmentioning

confidence: 99%

Homogeneous Nanostructured VO2@SiO2 as an Anti-Reflecting Layer in the Visible/Near Infrared Wavelength

Wang,

He,

Sun

2023

Materials

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Low reflectivity is of great significance to photoelectric devices, optical displays, solar cells, photocatalysis and other fields. In this paper, vanadium oxide is deposited on pattern SiO2 via atomic layer deposition and then annealed to characterize and analyze the anti-reflection effect. Scanning electron microscope (SEM) images indicate that the as-deposited VOx film has the advantages of uniformity and controllability. After annealing treatment, the VO2@pattern SiO2 has fewer crevices compared with VO2 on the accompanied planar SiO2 substrate. Raman results show that there is tiny homogeneous stress in the VO2 deposited on pattern SiO2, which dilutes the shrinkage behavior of the crystallization process. The optical reflection spectra indicate that the as-deposited VOx@pattern SiO2 has an anti-reflection effect due to the combined mechanism of the trapping effect and the effective medium theory. After annealing treatment, the weighted average reflectance diminished to 1.46% in the visible near-infrared wavelength range of 650–1355 nm, in which the absolute reflectance is less than 2%. Due to the multiple scattering effect caused by the tiny cracks generated through annealing, the anti-reflection effect of VO2@pattern SiO2 is superior to that of VOx@pattern SiO2. The ultra-low reflection frequency domain amounts to 705 nm, and the lowest absolute reflectance emerges at 1000 nm with an astonishing value of 0.86%. The prepared anti-reflective materials have significant application prospects in the field of intelligent optoelectronic devices due to the controllability of atomic layer deposition (ALD) and phase transition characteristics of VO2.

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General Strategy toward Laser Single-Step Generation of Multiscale Anti-Reflection Structures by Marangoni Effect

Cited by 3 publications

References 40 publications

Laser-based bionic manufacturing

Laser-based bionic manufacturing

Thermal-Assisted Laser Fabrication of Broadband Ultralow Reflectance Surface by Combining Marangoni Flow with In Situ Deposition

Homogeneous Nanostructured VO2@SiO2 as an Anti-Reflecting Layer in the Visible/Near Infrared Wavelength

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