Ultrasensitive, universal single-ion nanodetector
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arXiv
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| Format: | Preprint |
| Published: |
2026
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| _version_ | 1866915764632551424 |
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| author | Narendra, Namita Kubis, Tillmann |
| author_facet | Narendra, Namita Kubis, Tillmann |
| contents | In this paper, a carbon nanotube (CNT) based single-ion detector is proposed and its performance is evaluated with atomistic quantum transport models. The sensor can detect any ion type without molecule-specific functionalization and allows for continuous real-time ion monitoring. A single ion temporarily changes the operating principle of the sensor's CNT field-effect transistor into a resonant tunneling diode. The concrete device example of this paper showed a source-drain current increase of 5 orders of magnitude induced by a single ion. |
| format | Preprint |
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arxiv_https___arxiv_org_abs_2602_00406 |
| institution | arXiv |
| publishDate | 2026 |
| record_format | arxiv |
| spellingShingle | Ultrasensitive, universal single-ion nanodetector Narendra, Namita Kubis, Tillmann Applied Physics Mesoscale and Nanoscale Physics In this paper, a carbon nanotube (CNT) based single-ion detector is proposed and its performance is evaluated with atomistic quantum transport models. The sensor can detect any ion type without molecule-specific functionalization and allows for continuous real-time ion monitoring. A single ion temporarily changes the operating principle of the sensor's CNT field-effect transistor into a resonant tunneling diode. The concrete device example of this paper showed a source-drain current increase of 5 orders of magnitude induced by a single ion. |
| title | Ultrasensitive, universal single-ion nanodetector |
| topic | Applied Physics Mesoscale and Nanoscale Physics |
| url | https://arxiv.org/abs/2602.00406 |