Near-field plasmonic beam engineering by complex amplitude modulation based on metasurface (Conference Presentation) - Sun, Lin; Zhang, Xiaomeng; Zhao, Ruizhe; Li, Xiaowei; Wang, Jia; Bai, Benfeng; Wang, Yongtian; Zentgraf, Thomas; Huang, Lingling; Song, Xu (Nanophotonics VII)