1. Department of Materials Science and NanoEngineeringRice University Houston TX 77005 USA
2. Physics DepartmentFederal University of Parana (UFPR) 81531980 Curitiba PR Brazil
3. Aramco Research Center Houston TX 77061 USA
4. Alan G. MacDiarmid NanoTech InstituteUniversity of Texas at Dallas Richardson TX 75080 USA
5. Applied Physics Department and Center of Computational Engineering and ScienceState University of Campinas—UNICAMP 13083‐859 Campinas SP Brazil
6. Metallurgical and Materials EngineeringIndian Institute of Technology Kharagpur 721302 India