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Browsing by Author "Mthunzi, P"

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  • Mthunzi, P (AIP Publishing LLC, 2015-12)
    Live mammalian cells from various tissues of origin can be aseptically and noninvasively micromanipulated via lasers of different regimes. Laser-driven techniques are therefore paving a path toward the advancement of human ...
  • Zongo, S; Sanusi, K; Britton, J; Mthunzi, P; Nyokong, T; Maaza, M; Sahraoui, B (Elsevier, 2015-08)
    We have investigated the nonlinear optical properties, including the optical limiting behaviour for five different concentrations of laccaic acid dye in solution and a thin film obtained through doping in poly (methyl ...
  • Zongo, S; Kerasidou, AP; Sone, B; Diallo, A; Mthunzi, P; Iliopoulos, K; Nkosi, M; Maaza, M; Sahraoui, B (Elsevier, 2015-06)
    Natural dyes with highly delocalized p-electron systems are considered as promising organic materials for nonlinear optical applications. Among these dyes, Bixa Orellana dye with extended p-electron delocalization is one ...
  • Ashok, AC; Marchington, RF; Mthunzi, P; Krauss, TF; Dholakia, K (Optical Society of America, 2010-03)
    The authors describe the realization of integrated optical chromatography, in conjunction with on-chip fluorescence excitation, in a monolithically fabricated poly-dimethylsiloxane (PDMS) microfluidic chip. The unique ...
  • Khanyile, T; Papathanasopoulos, M; Forbees, A; Mthunzi, P (2013-10)
    This is a presentation on optical delivery of ARV drugs into HIV-1 permissive cells. The paper was presented at the Emerging Researchers Symposium.
  • Mthunzi, P (University of St Andrews, 2010-02)
    Recently, laser light sources of different regimes have emerged as an essential tool in the biophotonics research area. Classic applications include, for example: manipulating single cells and their subcellular organelles, ...
  • McLaren, M; Khanyile, T; Mthunzi, P; Forbes, A (Optical Society of America, 2013-04)
    We outline the possibility of optical trapping and tweezing with Super-Gaussian beam profiles. We show that the trapping strength can be tuned continuously by adjusting the order of a Super-Gaussian beam, approaching that ...
  • Mthunzi, P; Gunn-Moore, F; Dholakia, K (2010-09)
    Due to their self-renewal and pluripotency characteristics, stem cells possess the potential to dramatically advance current therapies in tissue regeneration and engineering. In this work, we report for the first time that ...
  • Mthunzi, P; Gunn-Moore, FJ; Dholakia, K (2009-06)
    Various methods including chemical, viral or physical approaches have been developed to trigger transient membrane permeabilisation with limited cytotocixity in cells. Such developments permit efficient cytoplasmic delivery ...
  • Khanyile, T; Papathanasopoulos, M; Forbes, A; Mthunzi, P (Optical Society of America, 2013-04)
    Targeted drug delivery into HIV-1 infected cells offers a reduction in toxicity and side effect. Using a femtosecond (fs) laser of different beam shapes anti-HIV-1 drugs are efficiently delivered into TZM-bl cells.
  • Mthunzi, P; Dholakia, K; Gunn-Moore, F (Society of Photo-optical Instrumentation Engineers (SPIE), 2010-07)
    Recently, femtosecond laser pulses have been utilized for the targeted introduction of genetic matter into mammalian cells. This rapidly expanding and developing novel optical technique using a tightly focused laser light ...
  • Maaza, M; Diallo, A; Zongo, S; Mthunzi, P; Soboyejo, W; Alqaradawi, S; Rehman, S (2014-12)
    The intensity-dependent refractive index n(sub2) and the nonlinear susceptibility X(sup3) of Hibiscus Sabdariffa dye solutions in the nanosecond regime at 532 nm are reported. More presicely, the variation of n(sub 2), ß, ...