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DC Field | Value | Language |
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dc.contributor.author | Dompreh, K. A. | - |
dc.contributor.author | Mensah, N. G. | - |
dc.contributor.author | Sakyi-Arthur, D. | - |
dc.contributor.author | Mensah, S. Y. | - |
dc.date.accessioned | 2021-10-26T09:03:55Z | - |
dc.date.available | 2021-10-26T09:03:55Z | - |
dc.date.issued | 2016 | - |
dc.identifier.issn | 23105496 | - |
dc.identifier.uri | http://hdl.handle.net/123456789/6261 | - |
dc.description | 12p:, ill. | en_US |
dc.description.abstract | We present a theoretical study of acoustic phonons amplification in Carbon Nanotubes (CNT). The phenomenon is via Cerenkov emission (CE) of acoustic phonons using intraband transitions proposed by Mensah et. al., [1] in Semiconductor Superlattices (SSL) and confirmed in [2]. From this, an asymmetric graph of ΓCNT on Vd and Ωτ were obtained where amplification (ΓCNT) >> absorption (ΓCNT ). The ratio,|ΓCNT ||ΓCNT|≈ 3.5, at Vd = 1.02Vs, ωq = 3.0 THz and T = 85 K for scattering angle θ > 0 . A threshold field at which Γ CNT abs switches over to Γ CNT amp was calculated to be E Dc z = 6.2 × 103V/m. This field is far less than that deduced using Bloch Type Oscillation (BTO) [3] which is E dc O = 3.0 × 105 V/m. The obtained ΓCNT amp would enable the use of CNT for the production of SASER | en_US |
dc.language.iso | en | en_US |
dc.publisher | University of Cape Coast | en_US |
dc.subject | Amplification | en_US |
dc.subject | Carbon nanotubes | en_US |
dc.subject | Acoustic phonon | en_US |
dc.subject | Hypersound | en_US |
dc.title | On the amplification of acoustic phonons in carbon nanotube | en_US |
dc.type | Article | en_US |
Appears in Collections: | Department of Physics |
Files in This Item:
File | Description | Size | Format | |
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On the amplification of acoustic phonons in carbon.pdf | Article | 317.33 kB | Adobe PDF | View/Open |
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