Topology of disordered 3D graphene networks
Disordered carbons comprise graphene fragments assembled into three-dimensional networks. It has long been debated whether these networks contain positive curvature, as seen in fullerenes, negative curvature, as proposed for the schwarzite structures, or zero curvature, as in ribbons. We present a m...
| Main Authors: | , , , , |
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| Format: | Journal Article |
| Language: | English |
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AMER PHYSICAL SOC
2019
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| Subjects: | |
| Online Access: | https://www.repository.cam.ac.uk/handle/1810/302042 http://hdl.handle.net/20.500.11937/90966 |
| _version_ | 1848765474295250944 |
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| author | Martin, Jacob Tomas Andres, Carla de Suarez-Martinez, Irene Kraft, M. Marks, Nigel |
| author_facet | Martin, Jacob Tomas Andres, Carla de Suarez-Martinez, Irene Kraft, M. Marks, Nigel |
| author_sort | Martin, Jacob |
| building | Curtin Institutional Repository |
| collection | Online Access |
| description | Disordered carbons comprise graphene fragments assembled into three-dimensional networks. It has long been debated whether these networks contain positive curvature, as seen in fullerenes, negative curvature, as proposed for the schwarzite structures, or zero curvature, as in ribbons. We present a mesh-based approach to analyze the topology of a set of nanoporous and glassy carbon models that accurately reproduce experimental properties. Although all three topological elements are present, negatively curved structures dominate. At the atomic level, analysis of local environments shows that sp- A nd sp3-bonded atoms are associated with line defects and screw dislocations that resolve topological complexities such as termination of free edges and stacking of low curvature regions into ribbons. These results provide insight into the synthesis of porous carbon materials, glassy carbon and the graphitizability of carbon materials. |
| first_indexed | 2025-11-14T11:35:49Z |
| format | Journal Article |
| id | curtin-20.500.11937-90966 |
| institution | Curtin University Malaysia |
| institution_category | Local University |
| language | English |
| last_indexed | 2025-11-14T11:35:49Z |
| publishDate | 2019 |
| publisher | AMER PHYSICAL SOC |
| recordtype | eprints |
| repository_type | Digital Repository |
| spelling | curtin-20.500.11937-909662023-05-04T05:33:43Z Topology of disordered 3D graphene networks Martin, Jacob Tomas Andres, Carla de Suarez-Martinez, Irene Kraft, M. Marks, Nigel Science & Technology Physical Sciences Physics, Multidisciplinary Physics CARBON MODELS DISLOCATIONS DIAMOND Disordered carbons comprise graphene fragments assembled into three-dimensional networks. It has long been debated whether these networks contain positive curvature, as seen in fullerenes, negative curvature, as proposed for the schwarzite structures, or zero curvature, as in ribbons. We present a mesh-based approach to analyze the topology of a set of nanoporous and glassy carbon models that accurately reproduce experimental properties. Although all three topological elements are present, negatively curved structures dominate. At the atomic level, analysis of local environments shows that sp- A nd sp3-bonded atoms are associated with line defects and screw dislocations that resolve topological complexities such as termination of free edges and stacking of low curvature regions into ribbons. These results provide insight into the synthesis of porous carbon materials, glassy carbon and the graphitizability of carbon materials. 2019 Journal Article http://hdl.handle.net/20.500.11937/90966 10.1103/PhysRevLett.123.116105 English https://www.repository.cam.ac.uk/handle/1810/302042 http://purl.org/au-research/grants/arc/FT140100191 AMER PHYSICAL SOC fulltext |
| spellingShingle | Science & Technology Physical Sciences Physics, Multidisciplinary Physics CARBON MODELS DISLOCATIONS DIAMOND Martin, Jacob Tomas Andres, Carla de Suarez-Martinez, Irene Kraft, M. Marks, Nigel Topology of disordered 3D graphene networks |
| title | Topology of disordered 3D graphene networks |
| title_full | Topology of disordered 3D graphene networks |
| title_fullStr | Topology of disordered 3D graphene networks |
| title_full_unstemmed | Topology of disordered 3D graphene networks |
| title_short | Topology of disordered 3D graphene networks |
| title_sort | topology of disordered 3d graphene networks |
| topic | Science & Technology Physical Sciences Physics, Multidisciplinary Physics CARBON MODELS DISLOCATIONS DIAMOND |
| url | https://www.repository.cam.ac.uk/handle/1810/302042 https://www.repository.cam.ac.uk/handle/1810/302042 http://hdl.handle.net/20.500.11937/90966 |