Cu Patterning Using Femtosecond Laser Reductive Sintering of CuO Nanoparticles under Inert Gas Injection
In this paper, we report the effect of inert gas injection on Cu patterning generated by femtosecond laser reductive sintering of CuO nanoparticles (NPs). Femtosecond laser reductive sintering for metal patterning has been restricted to metal and metal-oxide composite materials. By irradiating CuO-n...
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MDPI AG
2021-06-01
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| Online Access: | https://www.mdpi.com/1996-1944/14/12/3285 |
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| author | Mizue Mizoshiri Kyohei Yoshidomi |
| author_facet | Mizue Mizoshiri Kyohei Yoshidomi |
| author_sort | Mizue Mizoshiri |
| collection | DOAJ |
| description | In this paper, we report the effect of inert gas injection on Cu patterning generated by femtosecond laser reductive sintering of CuO nanoparticles (NPs). Femtosecond laser reductive sintering for metal patterning has been restricted to metal and metal-oxide composite materials. By irradiating CuO-nanoparticle paste with femtosecond laser pulses under inert gas injection, we intended to reduce the generation of metal oxides in the formed patterns. In an experimental evaluation, the X-ray diffraction peaks corresponding to copper oxides, such as CuO and Cu<sub>2</sub>O, were much smaller under N<sub>2</sub> and Ar gas injections than under air injection. Increasing the injection rates of both gases increased the reduction degree of the X-ray diffraction peaks of the CuO NPs, but excessively high injection rates (≥100 mL/min) significantly decreased the surface density of the patterns. These results qualitatively agreed with the ratio of sintered/melted area. The femtosecond laser reductive sintering under inert gas injection achieved a vacuum-free direct writing of metal patterns. |
| first_indexed | 2024-03-10T10:25:47Z |
| format | Article |
| id | doaj.art-d4ad4a4297434e7da7d5b0bb00e643ee |
| institution | Directory Open Access Journal |
| issn | 1996-1944 |
| language | English |
| last_indexed | 2024-03-10T10:25:47Z |
| publishDate | 2021-06-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Materials |
| spelling | doaj.art-d4ad4a4297434e7da7d5b0bb00e643ee2023-11-22T00:05:26ZengMDPI AGMaterials1996-19442021-06-011412328510.3390/ma14123285Cu Patterning Using Femtosecond Laser Reductive Sintering of CuO Nanoparticles under Inert Gas InjectionMizue Mizoshiri0Kyohei Yoshidomi1Department of Mechanical Engineering, Nagaoka University of Technology, Niigata 940-2188, JapanDepartment of Mechanical Engineering, Nagaoka University of Technology, Niigata 940-2188, JapanIn this paper, we report the effect of inert gas injection on Cu patterning generated by femtosecond laser reductive sintering of CuO nanoparticles (NPs). Femtosecond laser reductive sintering for metal patterning has been restricted to metal and metal-oxide composite materials. By irradiating CuO-nanoparticle paste with femtosecond laser pulses under inert gas injection, we intended to reduce the generation of metal oxides in the formed patterns. In an experimental evaluation, the X-ray diffraction peaks corresponding to copper oxides, such as CuO and Cu<sub>2</sub>O, were much smaller under N<sub>2</sub> and Ar gas injections than under air injection. Increasing the injection rates of both gases increased the reduction degree of the X-ray diffraction peaks of the CuO NPs, but excessively high injection rates (≥100 mL/min) significantly decreased the surface density of the patterns. These results qualitatively agreed with the ratio of sintered/melted area. The femtosecond laser reductive sintering under inert gas injection achieved a vacuum-free direct writing of metal patterns.https://www.mdpi.com/1996-1944/14/12/3285Cu patternCuO nanoparticle inkfemtosecond laser reductive sinteringinert gas injection |
| spellingShingle | Mizue Mizoshiri Kyohei Yoshidomi Cu Patterning Using Femtosecond Laser Reductive Sintering of CuO Nanoparticles under Inert Gas Injection Materials Cu pattern CuO nanoparticle ink femtosecond laser reductive sintering inert gas injection |
| title | Cu Patterning Using Femtosecond Laser Reductive Sintering of CuO Nanoparticles under Inert Gas Injection |
| title_full | Cu Patterning Using Femtosecond Laser Reductive Sintering of CuO Nanoparticles under Inert Gas Injection |
| title_fullStr | Cu Patterning Using Femtosecond Laser Reductive Sintering of CuO Nanoparticles under Inert Gas Injection |
| title_full_unstemmed | Cu Patterning Using Femtosecond Laser Reductive Sintering of CuO Nanoparticles under Inert Gas Injection |
| title_short | Cu Patterning Using Femtosecond Laser Reductive Sintering of CuO Nanoparticles under Inert Gas Injection |
| title_sort | cu patterning using femtosecond laser reductive sintering of cuo nanoparticles under inert gas injection |
| topic | Cu pattern CuO nanoparticle ink femtosecond laser reductive sintering inert gas injection |
| url | https://www.mdpi.com/1996-1944/14/12/3285 |
| work_keys_str_mv | AT mizuemizoshiri cupatterningusingfemtosecondlaserreductivesinteringofcuonanoparticlesunderinertgasinjection AT kyoheiyoshidomi cupatterningusingfemtosecondlaserreductivesinteringofcuonanoparticlesunderinertgasinjection |