Nonlinear Computational Imaging via All-Dielectric Metasurfaces

This PhD project is embedded within the nonlinear imaging initiative “Nonlinear Computational Imaging via All-Dielectric Metasurfaces.” It aims to pioneer new technologies in infrared imaging by exploiting the unique capabilities of all-dielectric metasurfaces.

The research will focus on overcoming the limitations of current nonlinear imaging techniques by engineering dielectric nanostructures capable of high-resolution, real-time imaging. This involves advanced computational modelling, optical simulations, and experimental characterisation of metasurfaces.

The successful candidate will join an interdisciplinary team and collaborate with research partners across the UK, Europe, and Australia. They will engage in:

• Literature reviews of current trends in advanced photonics
• Electromagnetic simulations of nanostructures
• Design and fabrication of optical devices
• Preparation of scientific publications and conference presentations

This project offers a unique opportunity to contribute to state-of-the-art research in computational imaging, nanophotonics, and metasurface technology.

Supervisors

1) Lei Xu - lei.xu@ntu.ac.uk

2) Mohsen Rahmani - mohsen.rahmani@ntu.ac.uk

3) Ze Zheng – ze.zheng@ntu.ac.uk

References

[1] Zheng, Z., Sanderson, G., Sotoodeh, S., Clifton, C., Ying, C., Rahmani, M., & Xu, L. Real-Time Programmable Nonlinear Wavefront Shaping with Si Metasurface Driven by Genetic Algorithm  (2025). Engineering, DOI: 10.1016/j.eng.2025.04.023.

[2] Zheng, Z., Smirnova, D., Sanderson, G., Ying, C., Koutsogeorgis, D. C., Huang, L., Liu, Z., Oulton, R., Yousefi, A., Miroshnichenko, A. E., Neshev, D. N., O’Neill, M., Rahmani, M., & Xu, L. Broadband infrared imaging governed by guided-mode resonance in dielectric metasurfaces (2024). Light: Science & Applications, 13(1), 249.

[3] Sanderson, G., Zheng, Z., Melik-Gaykazyan, E., Gordon, G. S., Cousins, R., Ying, C., Rahmani, M., & Xu, L. Infrared imaging with nonlinear silicon resonator governed by high-Q quasi-BIC states (2024). Journal of Optics, 26(6), 065505. Highlighted in in Nature Photonics: https://www.nature.com/articles/s41566-024-01500-4.

[4] Zheng, Z., Xu, L., Huang, L. J., Smirnova, D., Kamali, K. Z., Yousefi, A., Fu, D., Camacho-Morales, R., Ying, C., Miroshnichenko, A. E., Neshev, D. N., & Rahmani, M. Third-harmonic generation and imaging with resonant Si membrane metasurface (2023). Opto-Electron. Adv, 6(8), 220174-1.

[5] Zangeneh Kamali, K., Xu, L., Gagrani, N., Tan, H. H., Jagadish, C., Miroshnichenko, A., Neshev, D., & Rahmani, M. Electrically programmable solid-state metasurfaces via flash localised heating (2023). Light: Science & Applications, 12(1), 40.