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Laser-Based Micro/Nano Manufacturing Technology

A special issue of Applied Sciences (ISSN 2076-3417). This special issue belongs to the section "Mechanical Engineering".

Deadline for manuscript submissions: closed (20 October 2022) | Viewed by 3593

Special Issue Editor


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Guest Editor
School of Mechanical Engineering, Shandong University, Jinan, China
Interests: bionic structure design, optimization, and processing
Special Issues, Collections and Topics in MDPI journals

Special Issue Information

Dear Colleagues,

Since the birth of the laser, laser-based micro/nano fabrication technologies have attracted widespread attention and accomplished remarkable achievements. Apart from their wide applications in the industry as cutting and drilling tools through thermal melting, our understanding of light-matter interactions has also revealed significant new phenomena, such as two-photon photo-crosslinking, photodynamic self-assembly, and laser-induced structures. By utilizing such new mechanisms, laser-based technologies have been extensively studied and found application in the fields of life science, material science, metasurfaces science, micro/nano-optics, micromechanics, and so on.

Nevertheless, these technologies still present significant challenges, for which the theoretical understanding of the near-field interaction between light and matter and experimental research on laser fabrications are key. This Special Issue thus aims to highlight and summarize the latest advancements in both the theoretical and experimental understanding of laser-based technologies for micro/nano fabrication. Moreover, papers detailing their application in various scientific fields, such as superhydrophobicity/oleophobic, antireflection, antibacterial, dynamic/geometric phase optical elements, lab on chips, quantum chips, etc., are welcomed.

We are inviting researchers to contribute original research articles, reviews, and mini-reviews on topics including, but not limited to:

  • Laser direct writing;
  • Laser ablation;
  • laser-induced periodic structures;
  • Laser–matter interactions;
  • Various applications of laser-based technologies.

Dr. Dongkai Chu
Guest Editor

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Published Papers (2 papers)

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Research

13 pages, 4533 KiB  
Article
Femtosecond Laser-Induced Evolution of Surface Micro-Structure in Depth Direction of Nickel-Based Alloy
by Shangyu Liu, Zhen Zhang, Zenan Yang and Chenchong Wang
Appl. Sci. 2022, 12(17), 8464; https://doi.org/10.3390/app12178464 - 24 Aug 2022
Cited by 2 | Viewed by 1711
Abstract
The surface coating properties of turbine blades are highly dependent on the material’s surface roughness, and the femtosecond laser-induced micro-structure can provide a wide range of roughness with periodicity. However, precise control of femtosecond laser-induced micro-structure is difficult. In this paper, we extend [...] Read more.
The surface coating properties of turbine blades are highly dependent on the material’s surface roughness, and the femtosecond laser-induced micro-structure can provide a wide range of roughness with periodicity. However, precise control of femtosecond laser-induced micro-structure is difficult. In this paper, we extend the application of the two-temperature model and combine it with experiments to accurately reveal the evolution law of micro-structure depth at different single pulse energies, as well as the influence of two processing parameters on micro-structure, namely, defocusing amount and scanning speed. The findings of this study provide reliable theoretical guidance for fast and accurate control of material surface roughness and open new possibilities for coating properties. Full article
(This article belongs to the Special Issue Laser-Based Micro/Nano Manufacturing Technology)
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12 pages, 7586 KiB  
Article
Investigation of Quadrate Fresnel Zone Plates Fabricated by Femtosecond Laser Direct Writing
by Xiaoyan Sun, Fang Zhou, Lian Duan and Ji-an Duan
Appl. Sci. 2022, 12(15), 7788; https://doi.org/10.3390/app12157788 - 2 Aug 2022
Cited by 3 | Viewed by 1508
Abstract
The circular Fresnel zone plate (FZP) has been extensively used in micro-optics due to its outstanding focusing performance. Despite that, the curved edge of the circular zone has drawbacks limiting its use in terahertz imaging, array generator, and micro/nano-manufacturing. Therefore, a circular structure [...] Read more.
The circular Fresnel zone plate (FZP) has been extensively used in micro-optics due to its outstanding focusing performance. Despite that, the curved edge of the circular zone has drawbacks limiting its use in terahertz imaging, array generator, and micro/nano-manufacturing. Therefore, a circular structure is not very practical to use. In this paper, Quadrate FZPs were proposed, and diffraction properties of the linear FZP (L-FZP), orthogonal FZP (O-FZP), and square FZP (S-FZP) were studied. Theoretically, the relationship between half side length of S-FZP and the radius of circular FZP is established, and the focal length formula of the S-FZP is derived. The linear and crossline focusing properties of quadrate FZPs were studied experimentally along with simulations. With the addition of blockers and phase shifting, the square and rectangular diffraction patterns were successfully obtained. Full article
(This article belongs to the Special Issue Laser-Based Micro/Nano Manufacturing Technology)
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