Author:Singh, A; Karsten, AE; Dam, JSDate:Nov 2008The optical properties namely the absorption and reduced scattering coefficients of porcine skin were determined using an integrating sphere setup and a multiple polynomial regression method. The absorption coefficient was found to be 0.44±0.06 ...Read more
Author:Singh, A; Karsten, AE; Mputle, I; Chetty, A; Naidoo, KerschDate:Jul 2009Poly(N-isopropylacrylamide) that is PNIPAAm is a temperature sensitive smart material which displays a lower critical solution temperature (LCST) at 33-35oC. At the lower critical solution temperature, the gel changes from hydrophilic to ...Read more
Author:Singh, A; Karsten, AE; Smith, RMDate:Jan 2010Non-invasive methods offer a great advantage over more conventional medical methods but many studies need to be done before such methods become easily accessible and usable. Many of these non-invasive methods are dependant on the interaction ...Read more
Author:Kiarii, EM; Govender, Krishna K; Mamo, MA; Govender, PPDate:Aug 2022Calculations of AgSbTe2 thermoelectric material and 2d CdS/TiS2 and their heterostructures were carried out using Density Functional Theory in Cambridge Serial Total Energy Package code as implemented in Material Studio 2018 software. The ...Read more
Author:Mulwa, WM; Ouma, CNM; Onani, MO; Dejene, FBDate:May 2016Substitutional energies, thermodynamic charge transition levels and optical properties of lanthanide doped anatase TiO(sub2) has been investigated using local density approximation with the Hubbard U correction (LDA+U) within the density ...Read more
Author:Yavari, N; Dam, JS; Antonsson, J; Wardell, K; Andersson-Engels, SDate:Sep 2005Knowledge of the optical properties of tissues can be applied in numerous medical and scientific fields, including cancer diagnostics and therapy. There are many different ways of determining the optical properties of turbid media. The paper ...Read more
Author:Abdalmonem, S; Harith, MA; Amin, RM; Karsten, A; Singh, ADate:Sep 2010Determination of the optical properties of solid and liquid samples has great importance. Since the integrating sphere-based setup is used to measure the amount of reflected and transmitted light by the examined samples, optical properties ...Read more
Author:Singh, A; Karsten, AEDate:Jul 2011Optical Coherence Tomography (OCT) has been used in biomedical applications as a method to non-invasively detect changes occurring in tissue such as the detection of skin cancer. The effect of skin tone on detection of skin cancer has however ...Read more
Author:Singh, A; Karsten, AE; Dam, JSDate:Oct 2008The optical properties namely the absorption and reduced scattering coefficients of chicken skin taken from the breast was measured using an Integrating Sphere setup at 632.8nm. The properties were extracted using the multiple regression ...Read more
Author:Monem, S; Singh, A; Karsten, AE; Amin, R; Harith, MADate:Dec 2015Tissue simulators, the so-called tissue phantoms, have been used to mimic human tissue for spectroscopic applications. Phantoms’ design depends on patterning the optical properties, namely absorption and scattering coefficients which characterize ...Read more
Author:Mhlongo, Gugu H; Motaung, DE; Nkosi, SS; Swart, HC; Malgas, GF; Hillie, KT; Mwakikunga, Bonex WDate:Feb 2014Violet-blue emitting ZnO nanostructures were synthesized by a microwave-assisted hydrothermal method followed by post-synthesis annealing at different temperatures. Scanning electron microscope analysis revealed a morphological transformation ...Read more
Author:Matthews, MW; Bernard, StewartDate:2013A two-layered sphere model is used to investigate the impact of gas vacuoles on the inherent optical properties (IOPs) of the cyanophyte Microcystis aeruginosa. Enclosing a vacuole-like particle within a chromatoplasm shell layer significantly ...Read more