1. ROAR Lab, Engineering Product Development Pillar, Singapore University of Technology and Design (SUTD), Singapore 487372, Singapore
2. Humanitarian Technology (HuT) Labs, Department of Electronics and Communication Engineering, Amrita Vishwa Vidyapeetham, Amritapuri 690525, India
3. Department of Electrical and Computer Engineering, Vanderbilt University, Nashville, TN 37240, USA
4. Office for Establishment of New Faculty, Akita University, Akita 010-8502, Japan