Lü Ming-Tao, Yan Ming-Yue, Ai Bao-Quan, Gao Tian-Fu, Zheng Zhi-Gang. Stokes efficiency in the overdamped Brownian ratchetJ. Acta Physica Sinica, 2017, 66(22): 220501. DOI: 10.7498/aps.66.220501