Metasurfaces: building blocks for tomorrow’s Technologies

Add to your list(s) Download to your calendar using vCal

• Mohsen Rahmani (Notthingham Trent University) and Lei Xu (Nottingham Trent University)
• Wednesday 30 August 2023, 14:00-15:00
• Nuffield G19.

If you have a question about this talk, please contact Dr Miguel Navarro-Cia.

Light-matter interactions can be highly controlled via nanoscale structures, hundreds of times thinner than human hair. Indeed, a single-layer of designed and engineered subwavelength nanostructures, so-called metasurfaces, can resonantly couple to the incident light and manipulate the light’s behaviour on demand. Indeed, metasurfaces are a valuable tool for enhancing nanoscale light-matter interactions through the excitation of both optically induced electric and magnetic Mie resonances, which play a crucial role in modern nanophotonics. As a result, metasurfaces can reproduce the functions of bulk optics and, on occasions, can offer new functionalities that are not possible with conventional diffractive optics.

In the first half of the Seminar, Rahmani will review the research activities of the newly formed Advanced Optics and Photonics Group at Nottingham Trent University on light-matter interaction with nanoparticles. He will discuss the group activities on employing metallic, dielectric and semiconductor metasurfaces to control the light intensity, frequency and propagation direction. He will particularly discuss applications of reconfigurable metasurfaces for generating a new display technology. In the 2nd half of the Seminar, Xu will discuss the group approaches to designing high-quality metasurfaces, particularly for nonlinear imaging and THz sensing. He shares recent results on converting infrared imaging to visible with high quality, leading to possibilities for new types of all-optical infrared imaging devices using metasurfaces. He will explain how resonant metasurfaces offer new approaches for non-destructive and rapid quantitative detection of trace biological and chemical substances.

This talk is part of the Metamaterials and Nanophotonics Group Seminars series.

This talk is included in these lists:

• Bham Talks
• Metamaterials and Nanophotonics Group Seminars
• Nuffield G19
• What's on in Physics?

Note that ex-directory lists are not shown.