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Ultrafast Laser Micro-/Nano-Processing: Igniting Innovation at the Tiniest Scales

A special issue of Materials (ISSN 1996-1944). This special issue belongs to the section "Manufacturing Processes and Systems".

Deadline for manuscript submissions: 20 September 2025 | Viewed by 329

Special Issue Editor

State Key Laboratory of Precision Manufacturing for Extreme Service Performance, College of Mechanical and Electrical Engineering, Central South University, Changsha 410083, China
Interests: optical design; ultrafast laser; micro-/nano-processing; metamaterials; precision displacement sensing
Special Issues, Collections and Topics in MDPI journals

Special Issue Information

Dear Colleagues,

The field of ultrafast laser micro-/nano-processing has witnessed remarkable growth in recent years, being the focal point of this Special Issue, titled " Ultrafast Laser Micro-/Nano-processing: Igniting Innovation at the Tiniest Scales". Ultrafast lasers, with their ultrashort pulse durations, enable unprecedented precision and control in material processing at the micro- and nano-scales. This has led to a plethora of novel applications across diverse industries, such as electronics, biomedicine, and optics.

The objective of this Special Issue is to present a comprehensive collection of the latest research findings and technological advancements in ultrafast laser micro-/nano-processing. It aims to provide a platform for researchers and practitioners to share their insights, innovative techniques, and experimental results. By doing so, we hope to foster further progress in this exciting field, stimulate interdisciplinary collaborations, and inspire new ideas for future applications. We encourage submissions that cover a wide range of topics, including the fundamental principles of ultrafast laser–material interactions, advanced fabrication methods, characterization techniques of micro-/nano-structures created by ultrafast lasers, and the exploration of emerging applications in different sectors.

Dr. Zhi Luo
Guest Editor

Manuscript Submission Information

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Keywords

  • micro-/nano-processing
  • ultrafast lasers
  • micro-/nano-scale material processing
  • laser–material interactions
  • precision fabrication
  • novel applications
  • characterization of micro-/nano-structures
  • metamaterials

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Published Papers (1 paper)

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Research

11 pages, 2278 KiB  
Article
Femtosecond Laser Irradiation Induced Heterojunctions Between Graphene Oxide and Silver Nanowires
by Jiayun Feng, Zhiyuan Wang, Zhuohuan Wu, Shujun Wang, Yuxin Sun, Qi Meng, Jiayue Wen, Shang Wang and Yanhong Tian
Materials 2025, 18(14), 3393; https://doi.org/10.3390/ma18143393 - 19 Jul 2025
Viewed by 131
Abstract
In this article, femtosecond laser scanning was used to create heterojunctions between silver nanowire (Ag NW) and graphene oxide (GO), resulting in a mechanical and electrical interconnection. Surface plasmon resonances (SPRs) were generated on the nanowire surface by using femtosecond laser irradiation, producing [...] Read more.
In this article, femtosecond laser scanning was used to create heterojunctions between silver nanowire (Ag NW) and graphene oxide (GO), resulting in a mechanical and electrical interconnection. Surface plasmon resonances (SPRs) were generated on the nanowire surface by using femtosecond laser irradiation, producing a periodically excited electric field along the Ag NWs. This electric field then interfered with the femtosecond laser field, creating strong localized heating effects, which melted the Ag NW and GO, leading to mechanical bonding between the two. The formation of these heterostructures was attributed to the transfer of plasmon energy from the Ag NW to the adjacent GO surface. Since the connection efficiency of the nanowires is closely related to the specific location and the polarization direction of the laser, FDTD simulations were conducted to model the electric field distribution on the surface of Ag NW and GO structures under different laser polarization directions, varying the lengths and diameters of the nanowires. Finally, the resistance changes of the printed Ag NW paths on the GO thin film after femtosecond laser irradiation were investigated. It was found that laser bonding could reduce the resistance of the Ag NW-GO heterostructures by two orders of magnitude, further confirming the formation of the junctions. Full article
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