Dynamic compression of a polymer stamper using high-impulse underwater shock waves to imprint a sub-micrometer structure on a metal plate surface
Press-forming technology is excellent for mass production. However, for micrometer-order forming, manufacturing press tools is unprofitable. Because laser-induced shock waves cannot rapidly accelerate heavier workpieces into molds, the workpieces are limited to thin metal foils. In this study, an ex...
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| Format: | Article |
| Language: | English |
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Elsevier
2023-05-01
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| Series: | Journal of Materials Research and Technology |
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| Online Access: | http://www.sciencedirect.com/science/article/pii/S2238785423009432 |
| _version_ | 1797798742106046464 |
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| author | Kouki Hasegawa Shigeru Tanaka Daisuke Inao Masatoshi Nishi Akihisa Kubota Kazuyuki Hokamoto |
| author_facet | Kouki Hasegawa Shigeru Tanaka Daisuke Inao Masatoshi Nishi Akihisa Kubota Kazuyuki Hokamoto |
| author_sort | Kouki Hasegawa |
| collection | DOAJ |
| description | Press-forming technology is excellent for mass production. However, for micrometer-order forming, manufacturing press tools is unprofitable. Because laser-induced shock waves cannot rapidly accelerate heavier workpieces into molds, the workpieces are limited to thin metal foils. In this study, an explosion-derived high-impulse shock wave was applied to dynamically compress a polymer stamper into a metal plate. The stamper was pressed for a few microseconds, resulting in a well-imprinted submicron structure on the aluminum plate surface. Numerical simulation clarified the imprinting mechanism, which involved local compression and restoration of the stamper profile that occurred when the reflected shock wave generated at the boundary between the stamper and the workpiece reached the free surface of the stamper. It was discovered that the shock wave must continue to act for a significantly longer time than that required for the reflected shock wave to reach the free surface of the stamper. Therefore, explosion-derived shock waves with a long pressure duration are effective for imprinting. This method has the potential to be developed into a practical technique for imparting functional microsurfaces to structural components. |
| first_indexed | 2024-03-13T04:08:24Z |
| format | Article |
| id | doaj.art-7a17d79965a04305bc95027c29badf2a |
| institution | Directory Open Access Journal |
| issn | 2238-7854 |
| language | English |
| last_indexed | 2024-03-13T04:08:24Z |
| publishDate | 2023-05-01 |
| publisher | Elsevier |
| record_format | Article |
| series | Journal of Materials Research and Technology |
| spelling | doaj.art-7a17d79965a04305bc95027c29badf2a2023-06-21T06:57:18ZengElsevierJournal of Materials Research and Technology2238-78542023-05-012467306738Dynamic compression of a polymer stamper using high-impulse underwater shock waves to imprint a sub-micrometer structure on a metal plate surfaceKouki Hasegawa0Shigeru Tanaka1Daisuke Inao2Masatoshi Nishi3Akihisa Kubota4Kazuyuki Hokamoto5Graduate School of Science and Technology, Kumamoto University, 2-39-1 Kurokami, Chuo-ku, Kumamoto-shi, Kumamoto 860-8555, JapanInstitute of Industrial Nanomaterials (IINa), Kumamoto University, 2-39-1 Kurokami, Chuo-ku, Kumamoto-shi, Kumamoto 860-8555, Japan; Corresponding author.Technical Division, Faculty of Engineering, Kumamoto University, 2-39-1 Kurokami, Chuo-ku, Kumamoto-shi, Kumamoto 860-8555, JapanNational Institute of Technology, Kumamoto College, 2627 Hirayama-Shinmachi, Yatsushiro-shi, Kumamoto, 866-8501, JapanGraduate School of Science and Technology, Kumamoto University, 2-39-1 Kurokami, Chuo-ku, Kumamoto-shi, Kumamoto 860-8555, JapanInstitute of Industrial Nanomaterials (IINa), Kumamoto University, 2-39-1 Kurokami, Chuo-ku, Kumamoto-shi, Kumamoto 860-8555, JapanPress-forming technology is excellent for mass production. However, for micrometer-order forming, manufacturing press tools is unprofitable. Because laser-induced shock waves cannot rapidly accelerate heavier workpieces into molds, the workpieces are limited to thin metal foils. In this study, an explosion-derived high-impulse shock wave was applied to dynamically compress a polymer stamper into a metal plate. The stamper was pressed for a few microseconds, resulting in a well-imprinted submicron structure on the aluminum plate surface. Numerical simulation clarified the imprinting mechanism, which involved local compression and restoration of the stamper profile that occurred when the reflected shock wave generated at the boundary between the stamper and the workpiece reached the free surface of the stamper. It was discovered that the shock wave must continue to act for a significantly longer time than that required for the reflected shock wave to reach the free surface of the stamper. Therefore, explosion-derived shock waves with a long pressure duration are effective for imprinting. This method has the potential to be developed into a practical technique for imparting functional microsurfaces to structural components.http://www.sciencedirect.com/science/article/pii/S2238785423009432Nanoimprint lithographyLaser shock imprintingMeta-surfaceExplosive materials processingAutodyn |
| spellingShingle | Kouki Hasegawa Shigeru Tanaka Daisuke Inao Masatoshi Nishi Akihisa Kubota Kazuyuki Hokamoto Dynamic compression of a polymer stamper using high-impulse underwater shock waves to imprint a sub-micrometer structure on a metal plate surface Journal of Materials Research and Technology Nanoimprint lithography Laser shock imprinting Meta-surface Explosive materials processing Autodyn |
| title | Dynamic compression of a polymer stamper using high-impulse underwater shock waves to imprint a sub-micrometer structure on a metal plate surface |
| title_full | Dynamic compression of a polymer stamper using high-impulse underwater shock waves to imprint a sub-micrometer structure on a metal plate surface |
| title_fullStr | Dynamic compression of a polymer stamper using high-impulse underwater shock waves to imprint a sub-micrometer structure on a metal plate surface |
| title_full_unstemmed | Dynamic compression of a polymer stamper using high-impulse underwater shock waves to imprint a sub-micrometer structure on a metal plate surface |
| title_short | Dynamic compression of a polymer stamper using high-impulse underwater shock waves to imprint a sub-micrometer structure on a metal plate surface |
| title_sort | dynamic compression of a polymer stamper using high impulse underwater shock waves to imprint a sub micrometer structure on a metal plate surface |
| topic | Nanoimprint lithography Laser shock imprinting Meta-surface Explosive materials processing Autodyn |
| url | http://www.sciencedirect.com/science/article/pii/S2238785423009432 |
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