Cover Image . Sebastian Soll, Qiang Zhao, Jens Weber, and Jiayin Yuan .. Yongqi Yang, Jinwen Zheng, Shoukuo Man, Xiaolan Sun, Zesheng An . with 1-hexylmethylimidazolium tris(pentafluoroethyl)trifluorophosphate [hmim][FAP] . Xiao-Feng Wang, Xin Hai, Yang Shu, Xu-Wei Chen, Jian-Hua Wang. Anal. May 7, - Author image not provided The proposed method uses a control-display (C-D) ratio that dynamically changes depending on the height.