Quantifying single-carbon nanotube-electrode contact via the nanoimpact method
A new methodology is developed to enable the measurement of the resistance across individual carbon nanotube-electrode contacts. Carbon nanotubes (CNTs) are suspended in the solution phase and occasionally contact the electrified interface, some of which bridge a micron-sized gap between two microba...
| Main Authors: | , , , , , |
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| Format: | Journal article |
| Language: | English |
| Published: |
American Chemical Society
2017
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| _version_ | 1797105445630902272 |
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| author | Li, X Batchelor-McAuley, C Shao, L Sokolov, S Young, N Compton, R |
| author_facet | Li, X Batchelor-McAuley, C Shao, L Sokolov, S Young, N Compton, R |
| author_sort | Li, X |
| collection | OXFORD |
| description | A new methodology is developed to enable the measurement of the resistance across individual carbon nanotube-electrode contacts. Carbon nanotubes (CNTs) are suspended in the solution phase and occasionally contact the electrified interface, some of which bridge a micron-sized gap between two microbands of an interdigitated gold electrode. A potential difference is applied between the contacts and the magnitude of the current increase after the arrival of the CNT gives a measure of the resistance associated with the single CNT-gold contact. These experiments reveal the presence of a high contact resistance (∼50 MΩ), which significantly dominates the charge-transfer process. Further measurements on ensembles of CNTs made using a dilute layer of CNTs affixed to the interdigitated electrode surface and measured in the absence of solvent showed responses consistent with the same high value of contact resistance. |
| first_indexed | 2024-03-07T06:47:40Z |
| format | Journal article |
| id | oxford-uuid:fb68f035-ba81-46e6-8f30-0825f8d009ce |
| institution | University of Oxford |
| language | English |
| last_indexed | 2024-03-07T06:47:40Z |
| publishDate | 2017 |
| publisher | American Chemical Society |
| record_format | dspace |
| spelling | oxford-uuid:fb68f035-ba81-46e6-8f30-0825f8d009ce2022-03-27T13:13:41ZQuantifying single-carbon nanotube-electrode contact via the nanoimpact methodJournal articlehttp://purl.org/coar/resource_type/c_dcae04bcuuid:fb68f035-ba81-46e6-8f30-0825f8d009ceEnglishSymplectic Elements at OxfordAmerican Chemical Society2017Li, XBatchelor-McAuley, CShao, LSokolov, SYoung, NCompton, RA new methodology is developed to enable the measurement of the resistance across individual carbon nanotube-electrode contacts. Carbon nanotubes (CNTs) are suspended in the solution phase and occasionally contact the electrified interface, some of which bridge a micron-sized gap between two microbands of an interdigitated gold electrode. A potential difference is applied between the contacts and the magnitude of the current increase after the arrival of the CNT gives a measure of the resistance associated with the single CNT-gold contact. These experiments reveal the presence of a high contact resistance (∼50 MΩ), which significantly dominates the charge-transfer process. Further measurements on ensembles of CNTs made using a dilute layer of CNTs affixed to the interdigitated electrode surface and measured in the absence of solvent showed responses consistent with the same high value of contact resistance. |
| spellingShingle | Li, X Batchelor-McAuley, C Shao, L Sokolov, S Young, N Compton, R Quantifying single-carbon nanotube-electrode contact via the nanoimpact method |
| title | Quantifying single-carbon nanotube-electrode contact via the nanoimpact method |
| title_full | Quantifying single-carbon nanotube-electrode contact via the nanoimpact method |
| title_fullStr | Quantifying single-carbon nanotube-electrode contact via the nanoimpact method |
| title_full_unstemmed | Quantifying single-carbon nanotube-electrode contact via the nanoimpact method |
| title_short | Quantifying single-carbon nanotube-electrode contact via the nanoimpact method |
| title_sort | quantifying single carbon nanotube electrode contact via the nanoimpact method |
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