Off-axis multi-wavelength dispersion controlling metalens for multi-color imaging Journal title: Opto-Electronic Advances Authors: Kaihua Dou, Xin Xie, Mingbo Pu, Xiong Li, Xiaoliang Ma, Changtao Wang, Xiangang Luo Subject(s): Electrical and Electronic Engineering, Engineering, Nanotechnology, Technology, Remote Sensing, Optics