A metasurface with bidirectional self-collimation modes at independent frequencies has been numerically designed and experimentally demonstrated. The unique feature provides a new working principle of utilizing surface electromagnetic waves for position-sensors and thus opens a new avenue towards coordinate sensing. A position-sensing prototype device based on the metasurface has been constructed to manifest such applications.
- Chuandeng Hu
- Xiaoxiao Wu
- Weijia Wen
