[1] Pondicherry Univ, Ctr Nanosci & Technol, Electromat Res Lab, Pondicherry 605014, India
[2] Natl Inst Technol Puducherry, Dept Chem, Nano Electrochem Lab NEL, Karaikal 609609, India
[3] Univ Tennessee, Dept Chem & Biomol Engn, Integrated Composites Lab ICL, Knoxville, TN 37996 USA