Atomic Level Qinghua Wei 1,2, Yanen Wang 1,*, Yiwen Rao 1, Anguo Jiang 1, Kun Zhang 1, Tingli Lu 3 and Xiongbiao Chen 2,* 1 Department of Industry Engineering, College of Mechanical Engineering, Northwestern Polytechnical University, Xi'an 710072, China; weiqinghua@nwpu.edu.cn (Q.W...