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Browsing COLLEGE OF AGRICULTURAL & NATURAL SCIENCES by Author "Edziah, Raymond"

Browsing COLLEGE OF AGRICULTURAL & NATURAL SCIENCES by Author "Edziah, Raymond"

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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 ...
  • Acoustomagnetoelectric effect in graphene nanoribbon in the presence of external electric and magnetic fields 
    Dompreh, Kwadwo A.; Mensah, Samuel Y.; Abukaria, Sulemana S.; Edziah, Raymond; Mensah, Natalia G.; Quaye, Harrison A. (University of Cape Coast, 2015)
    Acoustomagnetoelectric Efect (AME) in Graphene Nanoribbon (GNR) in the presence of an external electric and magnetic felds was studied using the Boltzmann kinetic equation. On open circuit, the Surface Acoustomag netoelectric ...
  • Acoustomagnetoelectric effect in graphene nanoribbon in the presence of external electric and magnetic fields 
    Dompreh, Kwadwo A.; Mensah, Samuel Y.; Abukaria, Sulemana S.; Edziah, Raymond; Mensah, Natalia G.; Quaye, Harrison A. (University of Cape Coast, 2015)
    Acoustomagnetoelectric Efect (AME) in Graphene Nanoribbon (GNR) in the presence of an external electric and magnetic felds was studied using the Boltzmann kinetic equation. On open circuit, the Surface Acoustomagnetoelectric ...
  • Cost effective profiling of neodymium-doped vanadate laser pulses 
    Edziah, Raymond (University of Cape Coast, 2018-03-30)
    As environmental conditions and component degradation and failure are known to affect the performance of ultrafast lasers, it is important to monitor their state in any nonlinear optical study. This may be achieved by ...
  • High repetition-rate laser z-scan measurements: criterion for recognizing adverse thermal effects 
    Edziah, Raymond (University of Cape Coast, 2019-03-30)
    This study reports z-scan measurements in which high-repetition-rate and reduced repetition-rate (pulse-picked) laser beams were employed using a standard sample, carbon disulfide (CS2) contained in supposedly high ...
  • Induced hall-like current by acoustic phonons in semiconductor fluorinated carbon nanotube 
    Sakyi-Arthur, Daniel; Mensah, Samuel Y.; Adu, Kofi W.; Dompreh, Kwadwo A.; Edziah, Raymond; Mensah, Natalia G.; Jebuni-Adanu, Cynthia (University of Cape Coast, 2020-05-12)
    We show that Hall-like current can be induced by acoustic phonons in a nondegenerate, semiconductor fluorine-doped single-walled carbon nanotube (FSWCNT) using a tractable analytical approach in the hypersound regime q ...
  • Laser induced resistivity of chiral single wall carbon nanotubes 
    Twum, Anthony; Mensah, Samuel Yeboah; Edziah, Raymond; Arthur, Augustine (University of Cape Coast, 2020-07-10)
    Using the Boltzmann transport equation within the semi-classical approximation with constant relaxation time, we theoretically studied the dynamics of electrons in chiral single wall nanotubes (SWNTs)subjected to a temperature ...
  • Optical identification of plasmodium alciparum malarial byproduct for parasite density estimation 
    Opoku-Ansah, Jerry; Eghan, Moses Jojo; Anderson, Benjamin; Boampong, Johnson Nyarko; Edziah, Raymond; Adueming, Peter Osei-Wusu; Amuah, Charles Lloyd Yeboah (University of Cape Coast, 2019-11-11)
    Plasmodium alciparum (P. alciparum) malarial degree of infection, termed as parasite density (PD), estimation is ital for point of-care diagnosis and treatment of the disease. In this work, we present application of optical ...
  • Photothermal Lens Spectrometry Measurements in Highly Turbid Media 
    Marcano, Aristides; Basaldua, Isaac; Villette, Aaron; Edziah, Raymond; Liu, Jinjie; Ziane, Omar; Melikechia, Noureddine (University of Cape Coast, 2013)
    We measured the photothermal lens signal in samples exhibiting high turbidity using a pump-probe scheme. We show that the photothermal lens signal properties remain nearly unchanged up to values of turbidity of 6 cm1 despite ...
  • Treatment efficacy of laser photothermal therapy using gold nanorods 
    Manuchehrabadi, Navid; Toughiri, Raheleh; Bieberich, Charles; Cai, Hong; Attaluri, Anilchandra; Edziah, Raymond; Lalanne, Elaine; Johnson, Anthony M.; Ma, Ronghui; Zhu, Liang (University of Cape Coast, 2013)
    In vivo experiments are performed to induce temperature elevations in implanted prostatic tumours in mice using 0.1 ml commercially available gold nanorod solution injected into the tumour. Tumour shrinkage studies and ...
  • White light photothermal lens spectrophotometer for the determination of absorption in scattering samples 
    Marcano, Aristides; Alvarado, Salvador; Meng, Junwei; Caballero, Daniel; Moares, Ernesto Marin; Edziah, Raymond (University of Cape Coast, 2014)
    We developed a pump-probe photothermal lens spectrophotometer that uses a broadband arc-lamp and a set of interference filters toprovide tunable, nearly monochromatic radiation between 370 and 730 nm as the pump light ...

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