Flexible guided-wave manipulation using phase-gradient dielectric metasurface antenna array Tao Wang, Hao Jia, Haoxiang Chen and Jianhong Yang Eur. Phys. J. D, 76 7 (2022) 131 Published online: 25 July 2022 DOI: 10.1140/epjd/s10053-022-00446-y