1. Department of Aerospace and Mechanical Engineering, University of Notre Dame, Notre Dame, Indiana 46556, USA
2. Radiation Laboratory, University of Notre Dame, Notre Dame, Indiana 46556, USA
3. Department of Electrical Engineering, University of Notre Dame, Notre Dame, Indiana 46556, USA
4. Institute of Engineering Thermophysics, Chinese Academy of Sciences, Beijing 100190, China
5. Tamura Co., Ltd., 2–3–1 Hirosedai, Sayama, Saitama 350–1328, Japan
6. National Institute of Information and Communications Technology, 4–2–1 Nukui-kitamachi, Koganei, Tokyo 184-8795, Japan