1. Department of Chemistry, Acharya Nagarjuna University, Guntur, India
2. Department of Chemistry, J.K.C.C. Acharya Nagarjuna University, Guntur, India
3. Department of Physics, Koneru Lakshmaiah Education Foundation, Guntur, India
4. Department of Mechatronic Engineering and Computer Science, UNIT, Tiradentes University Center, Maceió, Brazil