1. Department of Electrical and Computer Engineering, The University of Texas at Austin, Austin, Texas 78705, USA
2. Materials Research Centre, Indian Institute of Science, Bangalore 560012, India
3. Center for High Pressure Science and Technology Advanced Research, Shanghai 201203, People's Republic of China
4. Brimrose Corporation, 19 Loveton Circle, Hunt Valley Loveton Center, Sparks, Maryland 21152, USA
5. U.S. Army RDECOM-ARDEC, Fuze Precision Armaments Directorate, Picatinny Arsenal, New Jersey 07806, USA
6. Department of Geological Sciences, The University of Texas at Austin, Austin, Texas 78712, USA