Please use this identifier to cite or link to this item: http://hdl.handle.net/123456789/6261
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dc.contributor.authorDompreh, K. A.-
dc.contributor.authorMensah, N. G.-
dc.contributor.authorSakyi-Arthur, D.-
dc.contributor.authorMensah, S. Y.-
dc.date.accessioned2021-10-26T09:03:55Z-
dc.date.available2021-10-26T09:03:55Z-
dc.date.issued2016-
dc.identifier.issn23105496-
dc.identifier.urihttp://hdl.handle.net/123456789/6261-
dc.description12p:, ill.en_US
dc.description.abstractWe 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 SASERen_US
dc.language.isoenen_US
dc.publisherUniversity of Cape Coasten_US
dc.subjectAmplificationen_US
dc.subjectCarbon nanotubesen_US
dc.subjectAcoustic phononen_US
dc.subjectHypersounden_US
dc.titleOn the amplification of acoustic phonons in carbon nanotubeen_US
dc.typeArticleen_US
Appears in Collections:Department of Physics

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