1. Nano-Bio Lab, University of Texas at Arlington, Arlington, Texas 76019, USA
2. Department of Electrical Engineering, University of Texas at Arlington, Arlington, Texas 76011, USA
3. Nanotechnology Research Center, University of Texas at Arlington, Arlington, Texas 76019, USA
4. Electronics and Power Engineering Department, National University of Sciences and Technology (NUST), H-12, Islamabad, Pakistan
5. Department of Bioengineering, University of Texas at Arlington, Arlington, Texas 76010, USA
6. Department of Urology, University of Texas Southwestern Medical Center at Dallas, Dallas, Texas 75390, USA