1. Department of Electrical and Computer Engineering, Duke University, Durham, NC 27708, USA
2. RTI International, Research Triangle Park, NC 27709, USA
3. Micross Advanced Interconnect Technology, Research Triangle Park, NC 27709, USA
4. Department of Physics, University of Maine, Orono, ME 04469, USA
5. Jet Propulsion Laboratory, California Institute of Technology, La Canada Flintridge, CA 91011, USA