Spatiotemporal path discontinuities of wavepackets propagating across a meta-atom
- Title
- Spatiotemporal path discontinuities of wavepackets propagating across a meta-atom
- Author
- 신동수
- Issue Date
- 2014-04
- Publisher
- Nature Publishing Group
- Citation
- Scientific Reports, v. 4, article no. 4634, Page. 1-6
- Abstract
- The realization of phase discontinuities across metasurfaces has led to a new class of reflection and refraction. Here we present theory and experiment on the discontinuous propagation of wavepackets across subwavelength- thickness meta-atoms. Using acoustic waves, we observe the process of wavepackets traversing a meta-atom with abrupt displacements, which appear as path discontinuities on a space-time diagram. We construct a tunable meta-atom from two coupled resonators at,500 Hz, map the spatiotemporal trajectories of individual sonic pulses, and reveal discontinuities at the meta-atom where the pulses exit at a time similar to 50 ms ahead or behind their arrivals. Applications include thin acoustic metasurface lenses.
- URI
- https://www.nature.com/articles/srep04634https://repository.hanyang.ac.kr/handle/20.500.11754/181885
- ISSN
- 2045-2322
- DOI
- 10.1038/srep04634
- Appears in Collections:
- COLLEGE OF SCIENCE AND CONVERGENCE TECHNOLOGY[E](과학기술융합대학) > PHOTONICS AND NANOELECTRONICS(나노광전자학과) > Articles
- Files in This Item:
There are no files associated with this item.
- Export
- RIS (EndNote)
- XLS (Excel)
- XML