Browsing by Author "A. Ayeshamariam"
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PublicationBiosynthesis of (ZnO–Aloe vera) nanocomposites and antibacterial/antifungal studies( 2016-01)
;A. Ayeshamariam ;M. Kashif ;V. S. Vidhya ;M. G. V. Sankaracharyulu ;V. Swaminathan ;M. BououdinaM. JayachandranDevelopment of disease treatment and preventive measures to avoid any dangerous outbreak of epidemic proportions are important. Modern methods of detection and treatment include tissue culture, nanotechnology, radiation, and laser technology. We report the synthesis of nanocrystalline materials by combustion method with the use of Aloe vera extract powder. Addition of ZnO changes the structural and optical properties of A. vera. The as-prepared nanocrystalline ZnO (ZnO + A. vera) powders were characterized using XRD, TEM, and SEM. Antibacterial and antifungal tests show that ZnO nanoparticles mixed with A. vera are effective in inhibiting bacterial growth. -
PublicationSynthesis, structural and electrical characterizations of SnO₂ nanoparticles( 2016-07)
;N. Manjula ;G. Selvan ;R. Perumalsamy ;R. Thirumamagal ;M. JayachandranA. AyeshamariamSol-gel synthesized SnO2 nanoparticles with an average size of 20.0 nm obtained at 100º C were gradually annealed to 800º C in air for 60 minutes. Crystal density, lattice volume and microstrain are found to be nearly constant with annealing temperature, which confirm the formation of monophase SnO2. The prepared powders were characterized for their structural, morphological, and electrical properties. Spherical particles in the nanoscale level, with the size increasing with temperature are observed from XRD, SEM and TEM results.