@article { ISI:000567570200009, title = {Axial displacement calibration and tracking of optically trapped beads}, journal = {OPTICS AND LASERS IN ENGINEERING}, volume = {134}, year = {2020}, month = {NOV}, pages = {106285}, issn = {0143-8166}, doi = {10.1016/j.optlaseng.2020.106285}, author = {Ma, Guoteng and Hu, Chunguang and Li, Shuai and Gao, Xiaoqin and Li, Hongbin and Hu, Xiaotang} }