1. Department of Mechanical Engineering, Northwestern University, Evanston, IL 60208, USA
2. Shanghai Rebo Granulator Co., Ltd., 489 Gangde Road, Shanghai 201100, China
3. Department of Aerospace, Industrial and Mechanical Engineering, California Baptist University, Riverside, CA 92504, USA
4. Department of Biomedical Engineering, University of Massachusetts, Lowell, MA 01854, USA