1. Department of Mechanical Engineering, University of Nevada Las Vegas, Las Vegas, Nevada 89154-4027, School of Mechanical Engineering, Yeungnam University, Gyongsan 712-749 South Korea, Department of Biomedical Engineering, Chongqing University, Chongqing 400044, P.R. China, and Department of Environment Science and Engineering, Shenzhen University, Shenzhen, Guandong 518060, P.R. China