**Author details**

Yanjie Wang1†\*, Jie Ru2†, Denglin Zhu<sup>1</sup> , Minzhou Luo1 , Xiaofeng Liu1 and Hualing Chen2

\*Address all correspondence to: yj.wang1985@gmail.com

1 Department of Mechanical and Electrical Engineering, Hohai University, Changzhou Campus, Changzhou, People's Republic of China

2 Department of Mechanical Engineering, Xi'an Jiaotong University, Xi'an, People's Republic of China

†The first two authors contributed equally to this work.
