John M.J.(Centre for Nanostructures and Advanced Materials, Council for Scientific and Industrial Research (CSIR), Pretoria, 0001, South Africa, Department of Chemistry, Nelson Mandela University, Port Elizabeth, 6001, South Africa)
Thomas S.(International and Interuniversity Centre for Nano Science and Nano Technology, Mahatma Gandhi University, Kottayam, 686560, India, Department of Biotechnology, School of Fundamental Biology and Biotechnology, Siberian Federal University, 79 Svobodnyi Av, Krasnoyarsk, Basic, 660041, Russian Federation)