Resolving strain in carbon nanotubes at the atomic level.
Details of how atomic structure responds to strain are essential for building a deeper picture of mechanics in nanomaterials. Here, we provide the first experimental evidence of atomic displacements associated with shear strain in single-walled carbon nanotubes (SWNTs) by direct imaging using aberra...
| Main Authors: | , , , |
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| Format: | Journal article |
| Language: | English |
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2011
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| _version_ | 1797090186771824640 |
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| author | Warner, J Young, N Kirkland, A Briggs, G |
| author_facet | Warner, J Young, N Kirkland, A Briggs, G |
| author_sort | Warner, J |
| collection | OXFORD |
| description | Details of how atomic structure responds to strain are essential for building a deeper picture of mechanics in nanomaterials. Here, we provide the first experimental evidence of atomic displacements associated with shear strain in single-walled carbon nanotubes (SWNTs) by direct imaging using aberration-corrected transmission electron microscopy. The atomic structure of a zig-zag SWNT is resolved with unprecedented accuracy and the strain induced by bending is mapped in two dimensions. We show the existence of a dominant non-uniform shear strain that varies along the SWNT axis. The direction of shear is opposite to what would be expected from a simple force applied perpendicular to the axis to produce the bending. This highlights the complex atomistic strain behaviour of beam-bending mechanics in highly anisotropic SWNTs. |
| first_indexed | 2024-03-07T03:14:53Z |
| format | Journal article |
| id | oxford-uuid:b577c00e-1c7d-4c18-8add-4610cb26514c |
| institution | University of Oxford |
| language | English |
| last_indexed | 2024-03-07T03:14:53Z |
| publishDate | 2011 |
| record_format | dspace |
| spelling | oxford-uuid:b577c00e-1c7d-4c18-8add-4610cb26514c2022-03-27T04:33:30ZResolving strain in carbon nanotubes at the atomic level.Journal articlehttp://purl.org/coar/resource_type/c_dcae04bcuuid:b577c00e-1c7d-4c18-8add-4610cb26514cEnglishSymplectic Elements at Oxford2011Warner, JYoung, NKirkland, ABriggs, GDetails of how atomic structure responds to strain are essential for building a deeper picture of mechanics in nanomaterials. Here, we provide the first experimental evidence of atomic displacements associated with shear strain in single-walled carbon nanotubes (SWNTs) by direct imaging using aberration-corrected transmission electron microscopy. The atomic structure of a zig-zag SWNT is resolved with unprecedented accuracy and the strain induced by bending is mapped in two dimensions. We show the existence of a dominant non-uniform shear strain that varies along the SWNT axis. The direction of shear is opposite to what would be expected from a simple force applied perpendicular to the axis to produce the bending. This highlights the complex atomistic strain behaviour of beam-bending mechanics in highly anisotropic SWNTs. |
| spellingShingle | Warner, J Young, N Kirkland, A Briggs, G Resolving strain in carbon nanotubes at the atomic level. |
| title | Resolving strain in carbon nanotubes at the atomic level. |
| title_full | Resolving strain in carbon nanotubes at the atomic level. |
| title_fullStr | Resolving strain in carbon nanotubes at the atomic level. |
| title_full_unstemmed | Resolving strain in carbon nanotubes at the atomic level. |
| title_short | Resolving strain in carbon nanotubes at the atomic level. |
| title_sort | resolving strain in carbon nanotubes at the atomic level |
| work_keys_str_mv | AT warnerj resolvingstrainincarbonnanotubesattheatomiclevel AT youngn resolvingstrainincarbonnanotubesattheatomiclevel AT kirklanda resolvingstrainincarbonnanotubesattheatomiclevel AT briggsg resolvingstrainincarbonnanotubesattheatomiclevel |