Evaluation of mechanical and antibacterial properties of Cu-DLC composite films
Diamond-like carbon (DLC) films had been formed as a surface treatment for intracorporal device for decreasing the coefficient of friction. DLC film showed significant stability without being damaged during acid immersion and high-pressure steam sterilization. However, bacteria that adhere to medica...
| Main Authors: | , , , , , |
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| Format: | Article |
| Language: | English |
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The Japan Society of Mechanical Engineers
2023-05-01
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| Series: | Mechanical Engineering Journal |
| Subjects: | |
| Online Access: | https://www.jstage.jst.go.jp/article/mej/10/4/10_23-00088/_pdf/-char/en |
| _version_ | 1828718025787834368 |
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| author | Yucheng LI Chiaki KOGA Yuki HIRATA Hiroki AKASAKA Hiroyasu KANETAKA Naoto OHTAKE |
| author_facet | Yucheng LI Chiaki KOGA Yuki HIRATA Hiroki AKASAKA Hiroyasu KANETAKA Naoto OHTAKE |
| author_sort | Yucheng LI |
| collection | DOAJ |
| description | Diamond-like carbon (DLC) films had been formed as a surface treatment for intracorporal device for decreasing the coefficient of friction. DLC film showed significant stability without being damaged during acid immersion and high-pressure steam sterilization. However, bacteria that adhere to medical devices lead to the induction of infectious diseases associated with therapeutic actions. Therefore, maintenance of a hygienic surface condition has been strictly required. This study demonstrated the fabrication of DLC films (gas source: CH4), which incorporated Cu (Cu-DLC). The Cu-DLC films were synthesized on a Si (100) substrate via plasma-enhanced chemical vapor deposition and magnetron sputtering. The surface morphology, microstructure, element contents, wear resistance, hardness, and antibacterial properties of the films were experimentally analyzed. Cu particles were considered not uniformly distributed in the DLC film, they embedded in DLC films formed a three-dimensional structure led to higher roughness. The Cu-DLC exhibited wear resistance and higher hardness compared to Cu. After inoculation, Cu-DLC films showed higher antibacterial activity against E. coli than pure DLC. It is expected that the hygienic films with excellent mechanical properties demonstrated in the present study will be utilized in various medical and industrial sectors. |
| first_indexed | 2024-03-12T14:37:50Z |
| format | Article |
| id | doaj.art-13d7e1f7979f48e2b129a4e54e254e46 |
| institution | Directory Open Access Journal |
| issn | 2187-9745 |
| language | English |
| last_indexed | 2024-03-12T14:37:50Z |
| publishDate | 2023-05-01 |
| publisher | The Japan Society of Mechanical Engineers |
| record_format | Article |
| series | Mechanical Engineering Journal |
| spelling | doaj.art-13d7e1f7979f48e2b129a4e54e254e462023-08-17T02:40:07ZengThe Japan Society of Mechanical EngineersMechanical Engineering Journal2187-97452023-05-0110423-0008823-0008810.1299/mej.23-00088mejEvaluation of mechanical and antibacterial properties of Cu-DLC composite filmsYucheng LI0Chiaki KOGA1Yuki HIRATA2Hiroki AKASAKA3Hiroyasu KANETAKA4Naoto OHTAKE5Department of Mechanical Engineering, Tokyo Institute of TechnologyDepartment of Mechanical Engineering, Tokyo Institute of TechnologyInstitute of Innovative Research (IIR), Tokyo Institute of TechnologyDepartment of Mechanical Engineering, Tokyo Institute of TechnologyGraduate School of Biomedical Engineering, Tohoku UniversityInstitute of Innovative Research (IIR), Tokyo Institute of TechnologyDiamond-like carbon (DLC) films had been formed as a surface treatment for intracorporal device for decreasing the coefficient of friction. DLC film showed significant stability without being damaged during acid immersion and high-pressure steam sterilization. However, bacteria that adhere to medical devices lead to the induction of infectious diseases associated with therapeutic actions. Therefore, maintenance of a hygienic surface condition has been strictly required. This study demonstrated the fabrication of DLC films (gas source: CH4), which incorporated Cu (Cu-DLC). The Cu-DLC films were synthesized on a Si (100) substrate via plasma-enhanced chemical vapor deposition and magnetron sputtering. The surface morphology, microstructure, element contents, wear resistance, hardness, and antibacterial properties of the films were experimentally analyzed. Cu particles were considered not uniformly distributed in the DLC film, they embedded in DLC films formed a three-dimensional structure led to higher roughness. The Cu-DLC exhibited wear resistance and higher hardness compared to Cu. After inoculation, Cu-DLC films showed higher antibacterial activity against E. coli than pure DLC. It is expected that the hygienic films with excellent mechanical properties demonstrated in the present study will be utilized in various medical and industrial sectors.https://www.jstage.jst.go.jp/article/mej/10/4/10_23-00088/_pdf/-char/endiamond-like carbon (dlc) hybrid filmsantibacterial propertiesmechanical propertieschemical vapor depositionmagnetron sputtering |
| spellingShingle | Yucheng LI Chiaki KOGA Yuki HIRATA Hiroki AKASAKA Hiroyasu KANETAKA Naoto OHTAKE Evaluation of mechanical and antibacterial properties of Cu-DLC composite films Mechanical Engineering Journal diamond-like carbon (dlc) hybrid films antibacterial properties mechanical properties chemical vapor deposition magnetron sputtering |
| title | Evaluation of mechanical and antibacterial properties of Cu-DLC composite films |
| title_full | Evaluation of mechanical and antibacterial properties of Cu-DLC composite films |
| title_fullStr | Evaluation of mechanical and antibacterial properties of Cu-DLC composite films |
| title_full_unstemmed | Evaluation of mechanical and antibacterial properties of Cu-DLC composite films |
| title_short | Evaluation of mechanical and antibacterial properties of Cu-DLC composite films |
| title_sort | evaluation of mechanical and antibacterial properties of cu dlc composite films |
| topic | diamond-like carbon (dlc) hybrid films antibacterial properties mechanical properties chemical vapor deposition magnetron sputtering |
| url | https://www.jstage.jst.go.jp/article/mej/10/4/10_23-00088/_pdf/-char/en |
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