1. Department of Mechanical Engineering, Chang Gung University, 259 Wen-Hwa 1st Rd., Taoyuan 333323, Taiwan
2. Research Center for Applied Sciences, Academia Sinica, 128 Academia Road, Sec. 2,Taipei 115201, Taiwan
3. Institute of Applied Mechanics, National Taiwan University, 1, Sec. 4, Roosevelt Rd., Taipei 106, Taiwan
4. Department of Mechanical Engineering, Ming Chi University of Technology, 84 Gungjuan Rd., New Taipei 243303, Taiwan
5. Proton and Radiation Therapy Center, Linkou Chang Gung Memorial Hospital, 15 Wen-Hwa 1st Rd., Taoyuan 333011, Taiwan