Abstract
Breaking of the symmetry of a single-wall carbon nanotube in the field of a helical wrap of ionized single-stranded DNA is investigated. For a non-chiral tube, the helical perturbation generates "natural" optical activity in the DNA-nanotube complex. The one-electron absorption spectrum for light polarized across the tube is sensitive to the band structure modulation due to the wrapping. Lifting of optical selection rules results in new optical transitions and circular dichroism of the complex. These optical effects are predicted to serve as qualitative tools to directly identify the DNA wrapping.
Original language | English (US) |
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Title of host publication | Carbon Nanotubes and Associated Devices |
Volume | 7037 |
DOIs | |
State | Published - Nov 21 2008 |
Event | Carbon Nanotubes and Associated Devices - San Diego, CA, United States Duration: Aug 10 2008 → Aug 12 2008 |
Other
Other | Carbon Nanotubes and Associated Devices |
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Country | United States |
City | San Diego, CA |
Period | 8/10/08 → 8/12/08 |
All Science Journal Classification (ASJC) codes
- Electronic, Optical and Magnetic Materials
- Condensed Matter Physics
- Computer Science Applications
- Applied Mathematics
- Electrical and Electronic Engineering