| Proj No. | A2077-251 |
| Title | Programmable Metasurface for Dynamic Wave Control |
| Summary | Metasurfaces were constructed through the integration of artificially designed meta-atoms, enabling precise control over the magnitude, phase, or polarization of electromagnetic (EM) waves and beyond. Metasurfaces enable intriguing functionalities such as broadband diffusion, anomalous refractions and reflections, culminating in the creation of innovative devices like mantle cloaks, flat meta-lenses, and Huygens surfaces. Most metasurfaces developed to date were composed of passive structures only, resulting in a fixed EM wave manipulation upon completion of the design. Recent efforts have shifted towards the development of tunable and programmable metasurfaces, which allow for dynamic control over their operational states, enabling a range of flexible functionalities. In this research project, our objective is to develop a programmable metasurface with the capability to dynamically switch between diffusion mode and multi-beam scattering modes. This functionality holds promise for application in reconfigurable intelligent surfaces (RIS) assisted wireless communication systems. We will use the commercial software to simulate the responses of the meta-atoms that loaded with PIN diode. The PIN diode, when operated in its ON and OFF states, exhibits distinct effective circuit models, leading to the meta-atom demonstrating a 180-degree phase shift in its reflection. By configuring different programmable patterns of the metasurface, it is possible to adjust the reflected wave to be operated at the diffusion modes, two beam scattering modes, and four beam scattering modes. This project will cover the electromagnetic wave theory, dynamical devices, metasurfaces, and the advanced numerical simulation tools. The learning curve should be (1) understanding the standard reflective metasurface; (2) simulation of meta-atoms with integrated PIN diodes;(3) applying algorithms to optimize the programmable pattern to realize required functionalities. This study is designed to facilitate students' understanding of electromagnetic wave theory and metasurfaces. By engaging with this study, students will be better prepared for advanced investigations in electromagnetics related research and will be well-equipped to address the challenges and opportunities presented by emerging technologies in light matter interaction and metasurfaces. |
| Supervisor | Ast/P Guangwei Hu (Loc:S1 > S1 B1B > S1 B1B 39, Ext: +65 67904337) |
| Co-Supervisor | - |
| RI Co-Supervisor | - |
| Lab | Nanophotonics Laboratory (formerly Engineering Materials) (Loc: S1-B2a-02) |
| Single/Group: | Single |
| Area: | Microelectronics and Biomedical Electronics |
| ISP/RI/SMP/SCP?: |