Ontology highlight
ABSTRACT:
SUBMITTER: Fu Y
PROVIDER: S-EPMC7852395 | biostudies-literature | 2020 Oct
REPOSITORIES: biostudies-literature
Fu Yangyang Y Shen Chen C Zhu Xiaohui X Li Junfei J Liu Youwen Y Cummer Steven A SA Xu Yadong Y
Science advances 20201002 40
Wave fields with orbital angular momentum (OAM) have been widely investigated in metasurfaces. By engineering acoustic metasurfaces with phase gradient elements, phase twisting is commonly used to obtain acoustic OAM. However, it has limited ability to manipulate sound vortices, and a more powerful mechanism for sound vortex manipulation is strongly desired. Here, we propose the diffraction mechanism to manipulate sound vortices in a cylindrical waveguide with phase gradient metagratings (PGMs). ...[more]