1. Department of Aerospace, Industrial, Mechanical Engineering, California Baptist University, Riverside, CA 92504, USA
2. Department of Mechanical and Aerospace Engineering, University of Virginia, Charlottesville, VA 22904, USA
3. Department of Mechanical and Aerospace Engineering, Princeton University, Princeton, NJ 08544, USA
4. Department of Biomedical Engineering, University of Massachusetts, Lowell, MA 01854, USA