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Browsing Department of Physics by Title

Browsing Department of Physics by Title

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  • 100X enhancement of the Nonlinear Refractive Index of Sulfur-Doped CS2 over Pure CS2 
    Edziah, Raymond; Lalanne, Elaine; Johnson, Anthony (University of Cape Coast, 2020)
    Preliminary Z-scan measurements of variable concentration sulfur-doped CS2 indicate a two order of magnitude enhancement of the nonlinear index (n2) over CS2. The laser repetition rate will be varied to determine any thermal ...
  • 3D DNA origami designed with caDNAno 
    Amoako, George; Ming, Zhou; RiAn, Ye; LiZhou, Zhuang; XiaoHong, Yang; Yong, Shen zhi (University of Cape Coast, 2013-06-04)
    For about three decades, DNA-based nanotechnology has been undergoing development as an assembly method for nanostructured materials. The DNA origami method pioneered by Rothemund paved the way for the formation of 3D ...
  • Absorption of acoustic phonons in fluorinated carbon nanotubes with non-parabolic, double periodic band 
    Sekyi-Arthur, D.; Mensah, S. Y.; Mensah, N. G.; Dompreh, K. A.; Edziah, R. (University of Cape Coast, 2016)
    We studied theoretically the absorption of acoustic phonons in the hypersound regime in Fluorine modified Carbon Nanotube (F-CNT) ΓF –CNT and compared it to that of undoped Single Walled Nanotube (SWNT) ΓSW NT .Per the ...
  • Acoustoelectric effect in degenerate carbon nanotube 
    Dompreh, K. A.; Mensah, N. G.; Mensah, S. Y.; Sam, F.; Twum, A.K. T (University of Cape Coast, 2015)
    Acoustoelectric Effect AE in degenerate Carbon Nanotube (CNT) was theoretically studied for hypersound in the regime ql >> 1. The dependence of acoustoelectric current jac on the acoustic wave number ~ and frequency ωq at ...
  • Acoustoelectric effect in fluorinated carbon nanotube in the absence of external electric field 
    Sakyi-Arthur, D.; Mensah, S. Y.; Adu, K. W.; Dompreh, K. A.; Edziah, R.; Mensah, N. G (University of Cape Coast, 2020-01-23)
    Acoustoelectric effect (AE) in a non-degenerate Fluorine modified single walled carbon nanotube (FSWCNT) semiconductor is studied theoretically using the Boltzmann’s transport equation. The study is done in the hyper sound ...
  • Acoustoelectric effect in Graphene with degenerate energy dispersion 
    Dompreh, K. A.; Mensah, N. G.; Mensah, S. Y. (University of Cape Coast, 2015)
    The acoustoelectric effect AE in Graphene with degenerate energy dispersion is theoretically studied for hypersound in the regime ql >> 1. At low temperatures (kβT << 1), the non-linear dependence of Acoustoelectric current ...
  • Adsorptive removal of iron and manganese from groundwater samples in Ghana by zeolite y synthesized from bauxite and kaolin 
    Kwakye-Awuah, Bright; Sefa-Ntiri, Baah; Von-Kiti, Elizabeth; Nkrumah, Isaac; Williams, Craig (University of Cape Coast, 2019-09-13)
    Ground water samples from residential homes in three Regions of Ghana: Central, Greater Accra and Ashanti, were analyzed for iron and manganese contamination. The samples were exposed to characterized zeolite Y y X-ray ...
  • Amplification of acoustic phonons in a degenerate semiconductor superlattices 
    Mensah, S.Y.; Allotey, F.K.A.; Mensah, N.G.; Eloh, V.W. (University of Cape Coast, 2002)
    Amplification of acoustic phonons propagating along the axis of a semiconductor superlattice (SL) is investigated using the microscopic theory. A non-quantizing electric field is applied to the S to produce a drift velocity ...
  • Amplification of acoustic phonons in superlattice 
    Dompreh, K.A.; Mensah, S.Y.; Mensah, N.G.; Abukari, S.S. (University of Cape Coast, 1970)
    The amplification of acoustic phonons in a superlattice in the presence of an electric field cos( ) has been investigated theoretically and numerically by computational methods. The calculation is done in the hypersound ...
  • Amplification of acoustic waves due to an external temperature gradient in super lattices 
    Mensah, S Y; Kangah, G K (University of Cape Coast, 1991)
    Amplification of short-wave sound propagating along the axis of a semiconductor super lattice by electrons of the lowest mini band in an external temperature gradient is investigated theoretically. The mechanism of absorption ...
  • Amplification of acoustic waves in armchair graphene nanoribbon in the presence of external electric and magnetic field 
    Dompreh, K. A.; Mensah, S. Y.; Abukari, S. S.; Sam, F.; Mensah, N. G. (University of Cape Coast, 2015)
    Amplification of Acoustic Waves in Armchair Graphene Nanoribbon (AGNR) in the presence of an external Electric and Magnetic field was studied using the Boltzmann’s kinetic equation. The general expression for the Amplification ...
  • Amplification of acoustic waves in armchair graphene nanoribbon in the presence of external electric and magnetic fields 
    Dompreh, K.A.; Mensah, S.Y.; Abukari, S.S.; Sam, F.; Mensah, N.G. (University of Cape Coast, 2015)
    Amplification of acoustic waves in Armchair Graphene Nanoribbon (AGNR) in the presence of an external electric and magnetic fields was studied using the Boltzmann's kinetic equation. The general expression for the amplification ...
  • Amplification of hypersound in graphene with degenerate energy dispersion 
    Dompreh, K. A.; Mensah, N. G.; Mensah, S. Y. (University of Cape Coast, 2015)
    Hypersound amplification/absorption of acoustic phonons in Graphene with degenerate energy dispersion ε(p) near the Fermi level was theoretically studied. For kβT << 1 and ql >> 1, the dependence of the absorption coefficient ...
  • Amplification of terahertz radiation in carbon nanotubes 
    Abukari, Sulemana S.; Adu, Kofi W.; Mensah, Samuel Y.; Mensah, Natalia G.; Dompreh, Kwadwo A.; Twum, Anthony; Rabiu, Musah (University of Cape Coast, 2013)
    We investigate theoretically the feasibility of amplification of terahertz radiation in aligned vachiral carbon nanotubes, a zigzag (12,0) and an armchair (10,10) in comparison with a super lattice using a combination of ...
  • Amplification of terahertz radiation in carbon nanotubes 
    Abukari, Sulemana S.; Adu, Kofi W.; Mensah, Samuel Y.; Mensah, Natalia G.; Dompreh, Kwadwo A.; Twum, Anthony; Rabiu, Musah (University of Cape Coast, 2013-04-24)
    We investigate theoretically the feasibility of amplification of terahertz radiation in aligned achiral carbon nanotubes, a zigzag (12,0) and an armchair (10,10) in comparison with a superlattice using a combination of a ...
  • Anomalous viscosity of vortex hall states in graphenea) 
    Rabiu, M.; Mensah, S. Y.; Ibrahim, S. Y.; Abukari, S. S. (University of Cape Coast, 2015)
    We study temperature effect on anomalous viscosity of Graphene Hall fluid within quantum many vortex hydrodynamics. The commonly observed filling fractions, ν in the range 0 < ν < 2 is considered. An expression for anomalous ...
  • Appearance of negative differential conductivity in graphene nanoribbons at high-harmonicsa) 
    Rabiu, M.; Mensah, S. Y.; Abukari, S. S. (University of Cape Coast, 2012)
    We theoretically study current dynamics of graphene nanoribbons subject to bias dc and ac driven fields. We showed that graphene nanoribbons exhibit negative high-harmonic differential conductivity. Negative differential ...
  • Application of pseudocyclic inaa to determine se, sc, and dyn Ghanaian fishes using gharr-1 
    Hood, C. O.; Vowotor, M. K.; Nyarko, B. J. B.; Fletcher, J. J. (University of Cape Coast, 2011)
    Pseudocyclic Instrumental Neutron Activation Analysis, INAA, was applied in the determination of Se, Sc, and Dy in Selene Dorsalis, Pomadasys peroteti, Brachydenterus aurita, Selar crumenophthalmus, Sargocentron hastatus, ...
  • Applying cluster refinement to improve crowd-based data duplicate detection approach 
    Haruna, Charles Roland; Hou, Mengshu; Xi, Rui; Eghan, Moses Ojo; Kpiebaareh, Michael; Tandoh, Lawrence; Eghan-Yartel, Barbie; Asante-Mensah, Maame G. (University of Cape Coast, 2019-06-04)
    In this paper, we present an extension on a hybrid-based deduplication technique in entity reconciliation (ER), by proposing an algorithm that builds clusters upon receiving a pre-specified K numberof clusters, and second ...
  • Assessing the adsorptive and Photodegradative Efficiencies of ZSM-11 Synthesized from Rice Husk Ash 
    Anang, Michael krofi; Zugle, Ruphino (University of Cape Coast, 2020-09-09)
    Rice husk was used to synthesize zeolite (ZSM-11). FTIR and X-ray diffraction methods were used to characterize the product. &e synthesized zeolite was used to treat underground water from some communities in Cape Coast ...

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