Additively manufactured biodegradable Zn metamaterials with tunable Poisson’s ratio and enhanced mechanical properties
Additively manufactured (AM) biodegradable porous zinc (Zn) is a promising material for bone substitutes, with negative Poisson's ratio (NPR) metamaterials offering particular advantages due to their bone-mimicking properties and energy absorption. However, traditional NPR designs often have li...
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| Format: | Article |
| Language: | English |
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Taylor & Francis Group
2025-12-01
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| Series: | Virtual and Physical Prototyping |
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| Online Access: | https://www.tandfonline.com/doi/10.1080/17452759.2025.2460209 |
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| author | Yixuan Shi Jiaqi Gao Xuan Li Zui Tao Chengcong Huang Shangyan Zhao Yuzhi Wu Youwen Yang Yabin Yang Yageng Li Lu-Ning Wang |
| author_facet | Yixuan Shi Jiaqi Gao Xuan Li Zui Tao Chengcong Huang Shangyan Zhao Yuzhi Wu Youwen Yang Yabin Yang Yageng Li Lu-Ning Wang |
| author_sort | Yixuan Shi |
| collection | DOAJ |
| description | Additively manufactured (AM) biodegradable porous zinc (Zn) is a promising material for bone substitutes, with negative Poisson's ratio (NPR) metamaterials offering particular advantages due to their bone-mimicking properties and energy absorption. However, traditional NPR designs often have limited mechanical strength and have not been previously applied to biodegradable Zn scaffolds. This study introduces a novel reinforced unit cell, optimised in 3D to retain NPR characteristics while significantly enhancing scaffold strength. Using laser powder bed fusion (LPBF), we fabricated these Zn metamaterials and assessed their mechanical properties through simulations and compression tests. The optimised NPR Zn scaffolds demonstrated more uniform stress distribution, reduced stress concentration, and improved yield strength and plateau stress. Specifically, the B3 structure (porosity 61.98%) achieved an elastic modulus of 1327.17 MPa and yield strength of 15.3 MPa, matching cancellous bone requirements and showing excellent energy absorption. Permeability and in vitro immersion studies revealed that higher permeability accelerated degradation, with the B3 scaffold showing a 19.76% weight loss over 28 days and a yield strength increase of 2.3 MPa. These findings demonstrate that AM Zn metamaterials maintain NPR traits with optimised mechanical properties, positioning them as a promising concept for biodegradable bone substitutes. |
| format | Article |
| id | doaj-art-31439ec1999d4f37a152e63877e28ee6 |
| institution | Kabale University |
| issn | 1745-2759 1745-2767 |
| language | English |
| publishDate | 2025-12-01 |
| publisher | Taylor & Francis Group |
| record_format | Article |
| series | Virtual and Physical Prototyping |
| spelling | doaj-art-31439ec1999d4f37a152e63877e28ee62025-02-06T19:56:08ZengTaylor & Francis GroupVirtual and Physical Prototyping1745-27591745-27672025-12-0120110.1080/17452759.2025.2460209Additively manufactured biodegradable Zn metamaterials with tunable Poisson’s ratio and enhanced mechanical propertiesYixuan Shi0Jiaqi Gao1Xuan Li2Zui Tao3Chengcong Huang4Shangyan Zhao5Yuzhi Wu6Youwen Yang7Yabin Yang8Yageng Li9Lu-Ning Wang10Beijing Advanced Innovation Center for Materials Genome Engineering, School of Materials Science and Engineering, University of Science and Technology Beijing, Beijing, People’s Republic of ChinaBeijing Advanced Innovation Center for Materials Genome Engineering, School of Materials Science and Engineering, University of Science and Technology Beijing, Beijing, People’s Republic of ChinaBeijing Advanced Innovation Center for Materials Genome Engineering, School of Materials Science and Engineering, University of Science and Technology Beijing, Beijing, People’s Republic of ChinaBeijing Advanced Innovation Center for Materials Genome Engineering, School of Materials Science and Engineering, University of Science and Technology Beijing, Beijing, People’s Republic of ChinaBeijing Advanced Innovation Center for Materials Genome Engineering, School of Materials Science and Engineering, University of Science and Technology Beijing, Beijing, People’s Republic of ChinaBeijing Advanced Innovation Center for Materials Genome Engineering, School of Materials Science and Engineering, University of Science and Technology Beijing, Beijing, People’s Republic of ChinaBeijing Advanced Innovation Center for Materials Genome Engineering, School of Materials Science and Engineering, University of Science and Technology Beijing, Beijing, People’s Republic of ChinaJiangxi Province Key Laboratory of Additive Manufacturing of Implantable Medical Device, Jiangxi University of Science and Technology, Ganzhou, People’s Republic of ChinaSchool of Materials Science and Engineering, Sun Yat-Sen University, Guangzhou, People’s Republic of ChinaBeijing Advanced Innovation Center for Materials Genome Engineering, School of Materials Science and Engineering, University of Science and Technology Beijing, Beijing, People’s Republic of ChinaBeijing Advanced Innovation Center for Materials Genome Engineering, School of Materials Science and Engineering, University of Science and Technology Beijing, Beijing, People’s Republic of ChinaAdditively manufactured (AM) biodegradable porous zinc (Zn) is a promising material for bone substitutes, with negative Poisson's ratio (NPR) metamaterials offering particular advantages due to their bone-mimicking properties and energy absorption. However, traditional NPR designs often have limited mechanical strength and have not been previously applied to biodegradable Zn scaffolds. This study introduces a novel reinforced unit cell, optimised in 3D to retain NPR characteristics while significantly enhancing scaffold strength. Using laser powder bed fusion (LPBF), we fabricated these Zn metamaterials and assessed their mechanical properties through simulations and compression tests. The optimised NPR Zn scaffolds demonstrated more uniform stress distribution, reduced stress concentration, and improved yield strength and plateau stress. Specifically, the B3 structure (porosity 61.98%) achieved an elastic modulus of 1327.17 MPa and yield strength of 15.3 MPa, matching cancellous bone requirements and showing excellent energy absorption. Permeability and in vitro immersion studies revealed that higher permeability accelerated degradation, with the B3 scaffold showing a 19.76% weight loss over 28 days and a yield strength increase of 2.3 MPa. These findings demonstrate that AM Zn metamaterials maintain NPR traits with optimised mechanical properties, positioning them as a promising concept for biodegradable bone substitutes.https://www.tandfonline.com/doi/10.1080/17452759.2025.2460209Biodegradable zincpoisson’ ratioMechanical propertyDegradationAdditive manufacturing |
| spellingShingle | Yixuan Shi Jiaqi Gao Xuan Li Zui Tao Chengcong Huang Shangyan Zhao Yuzhi Wu Youwen Yang Yabin Yang Yageng Li Lu-Ning Wang Additively manufactured biodegradable Zn metamaterials with tunable Poisson’s ratio and enhanced mechanical properties Virtual and Physical Prototyping Biodegradable zinc poisson’ ratio Mechanical property Degradation Additive manufacturing |
| title | Additively manufactured biodegradable Zn metamaterials with tunable Poisson’s ratio and enhanced mechanical properties |
| title_full | Additively manufactured biodegradable Zn metamaterials with tunable Poisson’s ratio and enhanced mechanical properties |
| title_fullStr | Additively manufactured biodegradable Zn metamaterials with tunable Poisson’s ratio and enhanced mechanical properties |
| title_full_unstemmed | Additively manufactured biodegradable Zn metamaterials with tunable Poisson’s ratio and enhanced mechanical properties |
| title_short | Additively manufactured biodegradable Zn metamaterials with tunable Poisson’s ratio and enhanced mechanical properties |
| title_sort | additively manufactured biodegradable zn metamaterials with tunable poisson s ratio and enhanced mechanical properties |
| topic | Biodegradable zinc poisson’ ratio Mechanical property Degradation Additive manufacturing |
| url | https://www.tandfonline.com/doi/10.1080/17452759.2025.2460209 |
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