Toward a Better Understanding of Shock Imprinting with Polymer Molds Using a Combination of Numerical Analysis and Experimental Research
In the last decade, a new technique has been developed for the nanoimprinting of thin-metal foils using laser-induced shock waves. Recent studies have proposed replacing metal or silicone molds with inexpensive polymer molds for nanoimprinting. In addition, explosive-derived shock waves provide deep...
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MDPI AG
2022-02-01
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| Series: | Materials |
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| Online Access: | https://www.mdpi.com/1996-1944/15/5/1727 |
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| author | Kouki Hasegawa Shigeru Tanaka Ivan Bataev Daisuke Inao Matatoshi Nishi Akihisa Kubota Kazuyuki Hokamoto |
| author_facet | Kouki Hasegawa Shigeru Tanaka Ivan Bataev Daisuke Inao Matatoshi Nishi Akihisa Kubota Kazuyuki Hokamoto |
| author_sort | Kouki Hasegawa |
| collection | DOAJ |
| description | In the last decade, a new technique has been developed for the nanoimprinting of thin-metal foils using laser-induced shock waves. Recent studies have proposed replacing metal or silicone molds with inexpensive polymer molds for nanoimprinting. In addition, explosive-derived shock waves provide deeper imprinting than molds, greatly simplifying the application of this technology for mass production. In this study, we focused on explosive-derived shock waves, which persist longer than laser-induced shock waves. A numerical analysis and a set of simplified molding experiments were conducted to identify the cause of the deep imprint. Our numerical analysis has accurately simulated the pressure history and deformation behavior of the workpiece and the mold. Whereas a high pressure immediately deforms the polymer mold, a sustained pressure gradually increases the molding depth of the workpiece. Therefore, the duration of the pressure can be one of the conditions to control the impact imprint phenomenon. |
| first_indexed | 2024-03-09T20:33:01Z |
| format | Article |
| id | doaj.art-5aee5d64ce1c4c14be9d93a519aa1cdf |
| institution | Directory Open Access Journal |
| issn | 1996-1944 |
| language | English |
| last_indexed | 2024-03-09T20:33:01Z |
| publishDate | 2022-02-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Materials |
| spelling | doaj.art-5aee5d64ce1c4c14be9d93a519aa1cdf2023-11-23T23:17:56ZengMDPI AGMaterials1996-19442022-02-01155172710.3390/ma15051727Toward a Better Understanding of Shock Imprinting with Polymer Molds Using a Combination of Numerical Analysis and Experimental ResearchKouki Hasegawa0Shigeru Tanaka1Ivan Bataev2Daisuke Inao3Matatoshi Nishi4Akihisa Kubota5Kazuyuki Hokamoto6Graduate School of Science and Technology, Kumamoto University, 2-39-1 Kurokami, Chuo-ku, Kumamoto-shi 860-8555, Kumamoto, JapanInstitute of Industrial Nanomaterials (IINa), Kumamoto University, 2-39-1 Kurokami, Chuo-ku, Kumamoto-shi 860-8555, Kumamoto, JapanFaculty of Mechanical Engineering and Technologies, Novosibirsk State Technical University, K. Marks 20, 630073 Novosibirsk, RussiaTechnical Division, Faculty of Engineering, Kumamoto University, 2-39-1 Kurokami, Chuo-ku, Kumamoto-shi 860-8555, Kumamoto, JapanDepartment of Mechanical and Intelligent Systems Engineering, National Institute of Technology (KOSEN), Kumamoto College, 2627 Hirayama-Shinmachi, Yatsushiro-shi 866-8501, Kumamoto, JapanGraduate School of Science and Technology, Kumamoto University, 2-39-1 Kurokami, Chuo-ku, Kumamoto-shi 860-8555, Kumamoto, JapanInstitute of Industrial Nanomaterials (IINa), Kumamoto University, 2-39-1 Kurokami, Chuo-ku, Kumamoto-shi 860-8555, Kumamoto, JapanIn the last decade, a new technique has been developed for the nanoimprinting of thin-metal foils using laser-induced shock waves. Recent studies have proposed replacing metal or silicone molds with inexpensive polymer molds for nanoimprinting. In addition, explosive-derived shock waves provide deeper imprinting than molds, greatly simplifying the application of this technology for mass production. In this study, we focused on explosive-derived shock waves, which persist longer than laser-induced shock waves. A numerical analysis and a set of simplified molding experiments were conducted to identify the cause of the deep imprint. Our numerical analysis has accurately simulated the pressure history and deformation behavior of the workpiece and the mold. Whereas a high pressure immediately deforms the polymer mold, a sustained pressure gradually increases the molding depth of the workpiece. Therefore, the duration of the pressure can be one of the conditions to control the impact imprint phenomenon.https://www.mdpi.com/1996-1944/15/5/1727nanoimprintinglaser shock imprintinghigh strain ratepolycarbonateAutodyn |
| spellingShingle | Kouki Hasegawa Shigeru Tanaka Ivan Bataev Daisuke Inao Matatoshi Nishi Akihisa Kubota Kazuyuki Hokamoto Toward a Better Understanding of Shock Imprinting with Polymer Molds Using a Combination of Numerical Analysis and Experimental Research Materials nanoimprinting laser shock imprinting high strain rate polycarbonate Autodyn |
| title | Toward a Better Understanding of Shock Imprinting with Polymer Molds Using a Combination of Numerical Analysis and Experimental Research |
| title_full | Toward a Better Understanding of Shock Imprinting with Polymer Molds Using a Combination of Numerical Analysis and Experimental Research |
| title_fullStr | Toward a Better Understanding of Shock Imprinting with Polymer Molds Using a Combination of Numerical Analysis and Experimental Research |
| title_full_unstemmed | Toward a Better Understanding of Shock Imprinting with Polymer Molds Using a Combination of Numerical Analysis and Experimental Research |
| title_short | Toward a Better Understanding of Shock Imprinting with Polymer Molds Using a Combination of Numerical Analysis and Experimental Research |
| title_sort | toward a better understanding of shock imprinting with polymer molds using a combination of numerical analysis and experimental research |
| topic | nanoimprinting laser shock imprinting high strain rate polycarbonate Autodyn |
| url | https://www.mdpi.com/1996-1944/15/5/1727 |
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