1. Plasma Laboratory, Department of Physics, Department of Materials Science and Engineering, and Department of Biomedical Engineering City University of Hong Kong Kowloon Hong Kong China
2. Empa, Swiss Federal Laboratories for Materials Science and Technology ETH Domain Dübendorf Switzerland
3. Biomedical and Mobile Health Technology Lab, Department of Health Sciences and Technology ETH Zürich Zürich Switzerland
4. Department of Advanced Design and Systems Engineering City University of Hong Kong Kowloon Hong Kong China
5. Department of Mechanical Engineering The University of Hong Kong Pokfulam Hong Kong China