1. Center for Nanotechnology, Wake Forest University, Winston Salem, North Carolina
27105, United States
2. MacDiarmid
Institute for Advanced Materials and Nanotechnology, SCPS, Victoria University of Wellington, Wellington 6140,
New Zealand
3. School of Electrical
Engineering, WCU Flexible Nanosystems, Korea University, Seoul, Korea
4. NanoTechLabs, Yadkinville, North Carolina 27055, United
States