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Micromachines
Special Issues
Advancement of Laser Technology from Materials Processing to Nano/Micro Fabrications
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Advancement of Laser Technology from Materials Processing to Nano/Micro Fabrications

A special issue of Micromachines (ISSN 2072-666X). This special issue belongs to the section "D：Materials and Processing".

Deadline for manuscript submissions: 31 March 2025 | Viewed by 1633

Special Issue Editors

Dr. Pawan K. Kanaujia

E-Mail Website
Guest Editor
Department of Electrical and Computer Engineering, University of Virginia, Charlottesville, VA 22904, USA
Interests: laser material processing; low dimensional materials; semiconductor optoelectronics; additive manufacturing; optical materials
Dr. Sima Umrao

E-Mail Website
Guest Editor
Department of Organic and Nano Engineering, Hanyang University, Seoul 133-791, Republic of Korea
Interests: advanced functional materials; MXene; Li-ion battery; laser processing; spectroscopy

Special Issue Information

Dear Colleagues,

Lasers are not just tools, they are revolutionizing fields such as manufacturing, healthcare, communication, and others. This Special Issue aims to cover the diverse and transformative role of lasers in shaping materials and powering innovative applications. As laser technology continues to evolve, it explores the multifaceted impact on redefining fields like high-precision manufacturing, healthcare, communication, and defense. Its influence on material processing, modification, and improving material properties has become increasingly profound. This Special Issue aims to comprehensively cover the array of laser applications, an area witnessing groundbreaking advancements with global implications, providing a thorough insight into ongoing progress, challenges, and future prospects in this dynamic field.

This Special Issue aims to explore the transformative role of lasers in shaping materials across various applications, including precision manufacturing, healthcare, communication, and defense, among others. It will investigate laser-based material processing techniques such as cutting, welding, ablation, and surface modifications, highlighting their effectiveness in fabricating mechanical components. Laser additive manufacturing (LAM) techniques, including selective laser melting and stereolithography, will be analyzed for their ability to produce high-performance components and address challenges in this evolving field. Additionally, the scope extends to the utilization of lasers in synthesizing and modifying nanomaterials and composites, enhancing their properties. Furthermore, the application of lasers in renewable energy, device development, recycling processes, environmental monitoring, space exploration, and defense will be explored comprehensively.

We encourage submissions of your research on additional laser applications and advances in laser technology. Please join us in this exciting exploration and contribute to shaping a brighter future.

Dr. Pawan K. Kanaujia
Dr. Sima Umrao
Guest Editors

Manuscript Submission Information

Manuscripts should be submitted online at www.mdpi.com by registering and logging in to this website. Once you are registered, click here to go to the submission form. Manuscripts can be submitted until the deadline. All submissions that pass pre-check are peer-reviewed. Accepted papers will be published continuously in the journal (as soon as accepted) and will be listed together on the special issue website. Research articles, review articles as well as short communications are invited. For planned papers, a title and short abstract (about 100 words) can be sent to the Editorial Office for announcement on this website.

Submitted manuscripts should not have been published previously, nor be under consideration for publication elsewhere (except conference proceedings papers). All manuscripts are thoroughly refereed through a single-blind peer-review process. A guide for authors and other relevant information for submission of manuscripts is available on the Instructions for Authors page. Micromachines is an international peer-reviewed open access monthly journal published by MDPI.

Please visit the Instructions for Authors page before submitting a manuscript. The Article Processing Charge (APC) for publication in this open access journal is 2600 CHF (Swiss Francs). Submitted papers should be well formatted and use good English. Authors may use MDPI's English editing service prior to publication or during author revisions.

Keywords

  • laser material processing
  • light–matter interactions
  • lasers in defense and manufacturing
  • sustainable recycling process
  • renewable energy
  • laser machining, cutting, welding, and polishing

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Published Papers (2 papers)

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Research

12 pages, 21486 KiB  
Article
Laser Cutting of Non-Woven Fabric Using UV Nanosecond Pulsed Laser
by Jiajun Fu, Chao Liu, Runhan Zhao, Huixin Wang, Zhongjie Yu and Qinghua Wang
Micromachines 2024, 15(11), 1390; https://doi.org/10.3390/mi15111390 - 17 Nov 2024
Viewed by 433
Abstract
The efficient cutting of non-woven fabric shows great significance to the development of the textile industry. In recent years, laser cutting technology has been widely applied in the clothing industry due to its high efficiency and cutting quality. In this work, a UV [...] Read more.
The efficient cutting of non-woven fabric shows great significance to the development of the textile industry. In recent years, laser cutting technology has been widely applied in the clothing industry due to its high efficiency and cutting quality. In this work, a UV nanosecond pulsed laser with a wavelength of 355 nm and a max power of 6.5 W is used to cut non-woven fabric with a thickness of 0.15 mm. The variation of kerf width, surface morphology, and chemical contents are investigated under different laser processing parameters, and the optimal processing parameter is determined. The experimental results demonstrate that the degree of crystallization and chemical composition of the kerf on the non-woven fabric surface is significantly influenced by laser cutting parameters such as laser scanning speed (from 100 to 700 mm/s) and frequency (from 20 to 70 kHz). The scanning speed of 500 mm/s and frequency of 30 kHz are considered the best parameters for achieving abundant energy for the complete and efficient cutting of non-woven fabric. In addition, the level of carbonization and oxidation reaches a relatively low value, and the kerf width is 0.214 mm, which is considered a reasonable value under the optimal processing parameters, showing high cutting quality. Furthermore, the effect of different cutting treatments on surface morphology and chemical contents is also studied. The experimental results present that the non-woven fabric cut by laser possesses a flat kerf, showing a similar effect to that of scissor cutting. Moreover, due to the programmability of laser processing patterns, it is possible to create more intricate designs on non-woven fabric. This facilitates the application and promotion of laser-cut non-woven fabrics. These results can provide a certain reference for laser cutting in the textile industry and are expected to allow for the cutting of high-quality kerf with low carbonization and oxidation. Full article
(This article belongs to the Special Issue Advancement of Laser Technology from Materials Processing to Nano/Micro Fabrications)
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16 pages, 11791 KiB  
Article
Comprehensive Analysis of Laser Peening Forming Effects on 5083 Aluminum Alloy
by Chuijiang Kong, Xiaojun Zhang, Gongling Chen, Xiamin Yuan, Bing Liu and Ran Zhu
Micromachines 2024, 15(8), 949; https://doi.org/10.3390/mi15080949 - 24 Jul 2024
Cited by 1 | Viewed by 705
Abstract
In order to investigate the laws of the laser peening forming process and the effects of laser peening on the surface quality and tensile properties of 5083 aluminum alloy, experiments were conducted utilizing various laser peening paths, energies, and plate thicknesses. Subsequently, laser [...] Read more.
In order to investigate the laws of the laser peening forming process and the effects of laser peening on the surface quality and tensile properties of 5083 aluminum alloy, experiments were conducted utilizing various laser peening paths, energies, and plate thicknesses. Subsequently, laser peening forming experiments were performed on S-shaped and different shapes of aluminum alloy substrates. The impact of different laser peening durations on surface morphology and tensile properties was then analyzed. Results indicated that the largest bending deformation perpendicular to the laser peening path reached 12.5 mm. In cases where the laser peening path was inclined relative to the horizontal direction, torsional deformations were observed in the aluminum alloy plate. For laser energy levels of 5 J, 6 J, and 7 J, deformation amounts were 3.8 mm, 4.9 mm, and 5.4 mm, respectively. Plates with thicknesses of 4 mm exhibited convex deformation, while those with 2 mm thickness showed concave deformation. Furthermore, following one and two laser peening cycles, the residual stresses in the alloy plates were −80 MPa and −107 MPa, the surface hardness increased by 16 HV and 31 HV, the roughness increased by 2.495 μm and 3.615 μm, and the tensile strength increased by 9.5 MPa and 18.5 MPa, respectively. Full article
(This article belongs to the Special Issue Advancement of Laser Technology from Materials Processing to Nano/Micro Fabrications)
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