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Browsing Department of Physics by Title

Browsing Department of Physics by Title

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  • Farmer’s observation on climate change impacts on maize (Zea mays) production in a selected agro ecological zone in Ghana 
    Klutse, Nama Ama Browne; Owusu, Kwadwo; Adukpo, David Cudjoe; Nkrumah, Francis; Quagraine, Kwesi (University of Cape Coast, 2013)
    Although maize farmers may not have a clear understanding of climate change, they live close to natural resources and are among the first in perceiving and reacting to environmental changes. They have observed and felt the ...
  • Feasibility study of the use of handheld nir spectrometer for simultaneous uthentication and quantification of quality parameters in intact pineapple fruits 
    Amuah, Charles L.; Teye, Ernest; Lamptey, Francis Padi; Nyandey, Kwasi; Opoku-Ansah, Jerry; Adueming, Peter Osei-Wusu (University of Cape Coast, 2019-08-06)
    The potential of predicting maturity using total soluble solids (TSS) and identifying organic from inorganic pineapple fruits based on near-infrared (NIR) spectra fingerprints would be beneficial to farmers and consumers ...
  • Feature based cryptanalytic technique for digital forensics analysis of visual cryptographic digital image data based on formal concept analysis 
    Quist-Aphetsi, Kester; Laurent, Nana; Pascu, Anca Christine; Gire, Sophie; Eghan, Jojo M.; Quaynor, Nii Narku (University of Cape Coast, 2015)
    Lossless pixel value encrypted images still maintains the some properties of their respective original plain images. Ciphered Images that maintain the properties of their plain images of a given domain are very useful in ...
  • Feature based encryption technique for securing forensic biometric image data using aes and visual cryptography 
    Quist-Aphetsi, Kester; Laurent, Nana; Pascu, Anca Christine; Gire, Sophie; Eghan, J. M.; Quaynor, Nii Narku (University of Cape Coast, 2014)
    with the current emergence of biometric image data applications on devices such as smart phones, security cameras, personal computers etc, there is a need for securing the image templates obtained from crime scenes as well ...
  • Femtosecond laser structuring of materials: A review 
    Amoako, George (University of Cape Coast, 2019-04-03)
    In this review the interaction between femtosecond laser and matter with emphasis on silicon and some metals have been appraised. For silicon, spikes are produced as a result of interaction in the presence of background ...
  • Formation of laser-induced periodic surface structures during femtosecond laser ablation of highly oriented pyrolytic graphite (hopg) 
    Zhang, W.; Zhou, M.; Amoako, G.; Shao, Y-L.; Li, B-J.; Li, J.; Gao, C-Y. (University of Cape Coast, 2013)
    Formation of laser-induced periodic surface structures (LIPSS) during femtosecond laser ablation of highly oriented pyrolytic graphite (HOPG) is investigated. Using a 1 kHz femtosecond pulses (pulse width 130 fs, centre ...
  • Fragment formation in the break-up of a drop falling in a miscible liquid 
    Arecchi, F. T.; Buah-Bassuah, P. K.; Perez-Garc, C. (University of Cape Coast, 1991)
    When falling in a lighter miscible solvent, a drop of liquid deforms to a torus which then breaks up into several fragments or just disappears by diffusion. By using liquids of different compositions we show the universal ...
  • Fragmentation instabilities of a drop as it falls in a miscible fluid 
    Residori, S.; Buah-Bassuah, P.K.; Arecchi, F.T. (University of Cape Coast, 2007)
    We review here a series of experiments on the fragmentation instabilities that a liquid drop undergoes it falls inside a fluid with which it is miscible, so called the solvent. Motivated by the original experiments initiated ...
  • Fragmentation instabilities of a liquid drop falling in a miscible fluid 
    Buah-Bassuah, P. K.; Residori, S.; Arecchi, F. T. (University of Cape Coast, 2014)
    We report a set of experimental investigations on the break-up of a liquid drop when falling in a miscible solvent, with the density difference being positive, or negative, or zero. Non-dimensional numbers, derived from ...
  • Fragmentation of a drop as it falls in a lighter miscible fluid 
    Arecchi, F. T.; Buah-Bassuah, P. K.; Francini, F.; Residori, S. (University of Cape Coast, 1996)
    We report an experimental investigation of the fragmentation process of a heavy drop falling in a lighter miscible fluid. For fixed liquid composition and for different drop sizes, we observe that the fragmentation cascade ...
  • Fungus covered insulator materials studied with laser-induced fluorescence and principal component analysis 
    Bengtsson, M.; Wallstroom, S.; Sjoholm, M.; Gronlund, R.; Anderson, B.; Larsson, A.; Karlsson, S.; Kroll, S.; Svanberg, S. (University of Cape Coast, 2005)
    A method combining laser-induced fluorescence and principal component analysis to detect and discriminate between algal and fungal growth on insulator materials has been studied. Eight fungal cultures and four insulator ...
  • General scattering mechanism and transport in graphene 
    Rabiu, M.; Mensah, S. Y.; Abukari, S. S. (University of Cape Coast, 2011)
    Using quasi-time dependent semi-classical transport theory in RTA, we obtained coupled current equations in the presence of time varying field and based on general scattering mechanism τ ∝ Eβ .We find that close to the ...
  • 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 ...
  • Generation and propagation of ultrasonic waves in piezoelectric graphene nanoribbon 
    Rabiu, Musah; Mensah, Samuel Y.; Abukari, Sulemana S.; Amekpewu, Matthew; Sefa-Ntiri, Baah; Twum, Anthony (University of Cape Coast, 2013)
    Generation and propagation of ultrasonic waves in single layer Graphene Nanoribbon is studied using semi-classical approach. When piezoelectric Graphene Nanoribbon (GNR) is exposed to time varying light beam, ultrasonic ...
  • Generation of terahertz radiation by wave mixing in armchair carbon nanotubes 
    Mensah, S.Y.; Abukari, S. S.; Mensah, N. G.; Dompreh, K. A.; Twum, A.; Allotey, F. K. A. (University of Cape Coast, 2000)
    Using semiclassical Boltzmann equation we have studied theoretically an effect of a direct current (DC) generation in undoped armchair carbon nanotube (CN) by mixing two coherent electromagnetic waves with commensurate ...
  • Giant electrical power factor in single-walled chiral carbon nanotube 
    Mensah, S.Y.; Allotey, F.K.A.; Mensah, N.G.; Nkrumah, G. (University of Cape Coast, 2001)
    Using the semiclassical approach we studied the thermoelectrical properties of a single-walled chiral carbon nanotubes (SWNTs). We predict a giant electrical power factor and hence proposed the use of carbon nanotubes as ...
  • Green’s function studies of phonon transport across Si/Ge superlattices 
    Tian, Zhiting; Esfarjani, Keivan; Chen, Gang (University of Cape Coast, 2014)
    Understanding and manipulating coherent phonon transport in solids is of interest both for enhancing the fundamental understanding of thermal transport as well as for many practical applications, including thermoelectrics. ...
  • Ground state energy of a polaron in a superlattice 
    Mensah, S. Y.; Allotey, F. K. A.; Nkrumah, G.; Mensah, N. G. (University of Cape Coast, 2000)
    The ground state energy of a polaron in a superlattice was calculated using the double-time Green functions. The effective mass of the polaron along the lanes perpendicular to the superlattice axis was also calculated. The ...
  • High electron thermal conductivity of chiral carbon nanotubes 
    Mensah, S.Y.; Allotey, F.K.A.; Nkrumah, George; Mensah, N.G. (University of Cape Coast, 2003)
    Solving the Boltzmann kinetic equation with energy dispersion relation obtained in the tight binding approximation, the carrier thermal conductivity Ke of a chiral carbon nanotube (CCNT) was determined. The dependence of ...
  • High frequency conductivity in carbon nanotubes 
    Abukari, S. S.; Mensah, S. Y.; Mensah, N. G.; Adu, K. A.; Rabiu, M.; Twum, A. (University of Cape Coast, 2012-12-05)
    We report on theoretical analysis of high frequency conductivity in carbon nanotubes. Using the kinetic equation with constant relaxation time, an analytical expression for the complex conductivity is obtained. The real ...

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