[1] Sacred Heart Coll, Abdul Kalam Res Ctr AKRC, PG & Res Dept Phys, Tirupattur 635601, Tamil Nadu, India
[2] Natl Inst Technol, Dept Elect & Elect Engn, Trichy 620015, Tamil Nadu, India
[3] King Saud Univ, Coll Sci, Dept Chem, POB 22452, Riyadh 11495, Saudi Arabia
[4] King Saud Univ, Coll Sci, Dept Bot & Microbiol, Riyadh 11451, Saudi Arabia
[5] Univ South Africa UNISA, Coll Grad Studies, UNESCO UNISA Africa Chair Nanosci Nanotechnol Lab, POB 392, Pretoria, South Africa
[6] Natl Res Fdn NRF, iThemba LABS, Mat Res Grp MRG, Nanosci African Network NANOAFNET, 1 Old Faure Rd,7129,POB 722, Somerset West, Western Cape Pr, South Africa