Preparation Technology of Stretchable Electrode Based on Laser Cutting
Wearable electronics have showed their profound impact in military, sports, medical and other fields, but their large-scale applications are still limited due to high manufacturing costs. As an advanced micro-fabrication process, laser processing technology has the advantages of high speed, high fle...
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| Format: | Article |
| Language: | English |
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MDPI AG
2022-09-01
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| Series: | Machines |
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| Online Access: | https://www.mdpi.com/2075-1702/10/10/854 |
| _version_ | 1827649259332173824 |
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| author | Liang Dong Kangqi Fan Yuhang Feng Mengxi Zhao Xingmeng Qin Zhaofei Zhu Chen Li |
| author_facet | Liang Dong Kangqi Fan Yuhang Feng Mengxi Zhao Xingmeng Qin Zhaofei Zhu Chen Li |
| author_sort | Liang Dong |
| collection | DOAJ |
| description | Wearable electronics have showed their profound impact in military, sports, medical and other fields, but their large-scale applications are still limited due to high manufacturing costs. As an advanced micro-fabrication process, laser processing technology has the advantages of high speed, high flexibility, strong controllability, environmental protection and non-contact in preparing micro-nano structures of wearable electronics. In this paper, a 355 nm ultraviolet laser was used to pattern the copper foil pasted on the flexible substrate, and the interconnection electrodes and wires were constructed. A processing method of multi-parallel line laser cutting and high-speed laser scanning is proposed to separate and assist in peeling off excess copper foil. The process parameters are optimized. A stretchable 3 × 3 light-emitting diode (LED) array was prepared and its performance was tested. The results showed that the LED array can work normally under the conditions of folding, bending and stretching, and the stretch rate can reach more than 50%. A stretchable temperature measurement circuit that can be attached to a curved surface was further fabricated, which proves the feasibility of this process in the fabrication of small-scale flexible wearable electronic devices. Requiring no wet etching or masking process, the proposed process is an efficient, simple and low-cost method for the fabrication of stretchable circuits. |
| first_indexed | 2024-03-09T19:55:19Z |
| format | Article |
| id | doaj.art-ab6ccd0520cc480c995073be58e475cf |
| institution | Directory Open Access Journal |
| issn | 2075-1702 |
| language | English |
| last_indexed | 2024-03-09T19:55:19Z |
| publishDate | 2022-09-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Machines |
| spelling | doaj.art-ab6ccd0520cc480c995073be58e475cf2023-11-24T00:59:00ZengMDPI AGMachines2075-17022022-09-01101085410.3390/machines10100854Preparation Technology of Stretchable Electrode Based on Laser CuttingLiang Dong0Kangqi Fan1Yuhang Feng2Mengxi Zhao3Xingmeng Qin4Zhaofei Zhu5Chen Li6College of Mechanical & Electrical Engineering, Shaanxi University of Science & Technology, Xi’an 710021, ChinaSchool of Mechano-Electronic Engineering, Xidian University, Xi’an 710071, ChinaCollege of Mechanical & Electrical Engineering, Shaanxi University of Science & Technology, Xi’an 710021, ChinaCollege of Mechanical & Electrical Engineering, Shaanxi University of Science & Technology, Xi’an 710021, ChinaCollege of Mechanical & Electrical Engineering, Shaanxi University of Science & Technology, Xi’an 710021, ChinaCollege of Mechanical & Electrical Engineering, Shaanxi University of Science & Technology, Xi’an 710021, ChinaCollege of Mechanical & Electrical Engineering, Shaanxi University of Science & Technology, Xi’an 710021, ChinaWearable electronics have showed their profound impact in military, sports, medical and other fields, but their large-scale applications are still limited due to high manufacturing costs. As an advanced micro-fabrication process, laser processing technology has the advantages of high speed, high flexibility, strong controllability, environmental protection and non-contact in preparing micro-nano structures of wearable electronics. In this paper, a 355 nm ultraviolet laser was used to pattern the copper foil pasted on the flexible substrate, and the interconnection electrodes and wires were constructed. A processing method of multi-parallel line laser cutting and high-speed laser scanning is proposed to separate and assist in peeling off excess copper foil. The process parameters are optimized. A stretchable 3 × 3 light-emitting diode (LED) array was prepared and its performance was tested. The results showed that the LED array can work normally under the conditions of folding, bending and stretching, and the stretch rate can reach more than 50%. A stretchable temperature measurement circuit that can be attached to a curved surface was further fabricated, which proves the feasibility of this process in the fabrication of small-scale flexible wearable electronic devices. Requiring no wet etching or masking process, the proposed process is an efficient, simple and low-cost method for the fabrication of stretchable circuits.https://www.mdpi.com/2075-1702/10/10/854wearable electronicslaser cuttingstretchable electrodesinterconnect structure |
| spellingShingle | Liang Dong Kangqi Fan Yuhang Feng Mengxi Zhao Xingmeng Qin Zhaofei Zhu Chen Li Preparation Technology of Stretchable Electrode Based on Laser Cutting Machines wearable electronics laser cutting stretchable electrodes interconnect structure |
| title | Preparation Technology of Stretchable Electrode Based on Laser Cutting |
| title_full | Preparation Technology of Stretchable Electrode Based on Laser Cutting |
| title_fullStr | Preparation Technology of Stretchable Electrode Based on Laser Cutting |
| title_full_unstemmed | Preparation Technology of Stretchable Electrode Based on Laser Cutting |
| title_short | Preparation Technology of Stretchable Electrode Based on Laser Cutting |
| title_sort | preparation technology of stretchable electrode based on laser cutting |
| topic | wearable electronics laser cutting stretchable electrodes interconnect structure |
| url | https://www.mdpi.com/2075-1702/10/10/854 |
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