1. Center for High Technology Materials, University of New Mexico, Albuquerque, New Mexico 87131, United States
2. Department of Electrical and Computer Engineering, University of New Mexico, Albuquerque, New Mexico 87131, United States
3. Center for Biomedical Engineering and Department of Chemical and Biological Engineering, University of New Mexico, Albuquerque, New Mexico 87131, United States
4. Anton Paar TriTec SA, Vernets 6, 2035 Corcelles, Switzerland