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| Autori principali: | , , , , , , , , , , |
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| Natura: | Preprint |
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2026
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| Accesso online: | https://arxiv.org/abs/2602.06988 |
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| _version_ | 1866911428568416256 |
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| author | Singh, Anitesh Kumar Alves, Rodrigo A. F. Pal, Tapas Bora, Sarmistha Rodrigues, Hugo X. Santos, Emanuel J. A. dos Ribeiro, Camila de L. Silva, Alysson M. A. Júnior, Luiz A. Ribeiro Galvão, Douglas S. Tiwary, Chandra Sekhar |
| author_facet | Singh, Anitesh Kumar Alves, Rodrigo A. F. Pal, Tapas Bora, Sarmistha Rodrigues, Hugo X. Santos, Emanuel J. A. dos Ribeiro, Camila de L. Silva, Alysson M. A. Júnior, Luiz A. Ribeiro Galvão, Douglas S. Tiwary, Chandra Sekhar |
| contents | Diamondynes are a recently synthesized three-dimensional carbon allotrope, with interlocked and movable sublattices that introduce deformation modes not present in standard architected materials. Here, we report the first multiscale mechanical assessment of Diamondiyne-derived architectures by combining quasi-static compression of 3D-printed specimens with reactive molecular dynamics simulations of the corresponding atomic-scale models. We generate four geometries (3F, 2F-SY, 4F, and 2F-USY). All structures resulted in lower density in the range of 0.20-0.38 g.cm^-3. Experiments indicate that the symmetric two-sublattice structure (2F-SY) delivers the best performance, reaching a specific yield strength of 5.91 MPa.g^-1cm^-3 and a specific energy absorption of 279 J.g^-1, whereas 2F-USY architecture yielded the lowest values, with 0.77 MPa.g^-1.cm^-3 and 16 J.g^-1. The 4F geometry provided a specific energy absorption of 254 J.g^-1. The structures deformed through geometric collapse and strut buckling, which was due to diagonal shear in 2F-USY and progressive compaction in 2F-SY and 3F. Molecular dynamics simulations also confirmed these experimental trends and revealed strong directional anisotropy due to the arrangement of interlocked sublattices, with a stiffness of 24.1 GPa along the z-direction in the case of 4F architecture. Overall, Diamondiyne-derived architectures display geometry-dominated mechanical behavior and serve as a promising platform for lightweight, energy-absorbing metamaterials. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2602_06988 |
| institution | arXiv |
| publishDate | 2026 |
| record_format | arxiv |
| spellingShingle | Multiscale Mechanical Response of 3D-Printed Diamondiynes: From Movable Interlocked Lattices to Architected Metamaterials Singh, Anitesh Kumar Alves, Rodrigo A. F. Pal, Tapas Bora, Sarmistha Rodrigues, Hugo X. Santos, Emanuel J. A. dos Ribeiro, Camila de L. Silva, Alysson M. A. Júnior, Luiz A. Ribeiro Galvão, Douglas S. Tiwary, Chandra Sekhar Applied Physics Materials Science 00-XX I.2; J.6 Diamondynes are a recently synthesized three-dimensional carbon allotrope, with interlocked and movable sublattices that introduce deformation modes not present in standard architected materials. Here, we report the first multiscale mechanical assessment of Diamondiyne-derived architectures by combining quasi-static compression of 3D-printed specimens with reactive molecular dynamics simulations of the corresponding atomic-scale models. We generate four geometries (3F, 2F-SY, 4F, and 2F-USY). All structures resulted in lower density in the range of 0.20-0.38 g.cm^-3. Experiments indicate that the symmetric two-sublattice structure (2F-SY) delivers the best performance, reaching a specific yield strength of 5.91 MPa.g^-1cm^-3 and a specific energy absorption of 279 J.g^-1, whereas 2F-USY architecture yielded the lowest values, with 0.77 MPa.g^-1.cm^-3 and 16 J.g^-1. The 4F geometry provided a specific energy absorption of 254 J.g^-1. The structures deformed through geometric collapse and strut buckling, which was due to diagonal shear in 2F-USY and progressive compaction in 2F-SY and 3F. Molecular dynamics simulations also confirmed these experimental trends and revealed strong directional anisotropy due to the arrangement of interlocked sublattices, with a stiffness of 24.1 GPa along the z-direction in the case of 4F architecture. Overall, Diamondiyne-derived architectures display geometry-dominated mechanical behavior and serve as a promising platform for lightweight, energy-absorbing metamaterials. |
| title | Multiscale Mechanical Response of 3D-Printed Diamondiynes: From Movable Interlocked Lattices to Architected Metamaterials |
| topic | Applied Physics Materials Science 00-XX I.2; J.6 |
| url | https://arxiv.org/abs/2602.06988 |