Research output: Contribution in Book/Report/Proceedings - With ISBN/ISSN › Conference contribution/Paper › peer-review
Publication date | 2006 |
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Host publication | Nanomodeling II |
Editors | A Lakhtakia, SA Maksimenko |
Place of Publication | BELLINGHAM |
Publisher | SPIE-INT SOC OPTICAL ENGINEERING |
Pages | 32808-32808 |
Number of pages | 11 |
ISBN (print) | 0-8194-6407-4 |
<mark>Original language</mark> | English |
Event | Conference on Nanomodeling II - San Diego Duration: 13/08/2006 → 15/08/2006 |
Conference | Conference on Nanomodeling II |
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City | San Diego |
Period | 13/08/06 → 15/08/06 |
Conference | Conference on Nanomodeling II |
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City | San Diego |
Period | 13/08/06 → 15/08/06 |
In the first part of the present contribution, we will report on transport calculations of nanoscaled devices based on Carbon Nanotubes obtained via self-consistent density-functional method coupled with non-equilibrium Greens function approaches. In particular, density functional tight-binding techniques are very promising due to their intrinsic efficiency. This scheme allows treatment of systems comprising a large number of atoms and enables the computation of the current flowing between two or more contacts in a fully self-consistent manner with the open boundary conditions that naturally arise in transport problems. We will give a description of this methodology and application to field effect transistor based on Carbon nanotubes.
The advances in manufacturing technology are allowing new opportunities even for vacuum electron devices producing radio-frequency radiation. Modem micro and nano-technologies can overcome the typical severe limitations of vacuum tube devices. As an example, Carbon Nanotubes used as cold emitters in micron-scaled triodes allow for frequency generation up to THz region. The purpose of the second part of this contribution will be a description of the modelling of Carbon Nanotube based vacuum devices such as triodes. We will present the calculation of important figures of merit and possible realizations.