Browsing Department of Physics by Subject "Mathematical model"

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Generation and amplification of terahertz radiation in carbon nanotubes

Abukaria, S. S.; Mensah, S.Y.; Mensah, N. G.; Adud, K. W.; Rabiu, M.; Dompreh, K. A.; Twum, A. (University of Cape Coast, 2012)

We investigate theoretically the feasibility of generation and amplification of terahertz radiation in aligned achiral carbon nanotubes (zigzag and armchair) in comparison with a super lattice in the presence of a constant ...
Nonlinear conductivity in graphene

Abukaria, S. S.; Mensah, S. Y.; Musah, R.; Mensah, N. G.; Dompreh, K. A. (University of Cape Coast, 2015)

We consider the tight-binding approximation for the description of energy bands of graphene, together with the standard Boltzmanns transport equation and constant relaxation time, an expression for the conductivity was ...

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