Events

Date: 16 March 2026   Time: 11:00 - 12:00     

Location: Graduate Centre GC-103 + Online

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Synopsis

Intelligent light sensing is central to applications in spectroscopy, imaging, communications, and environmental monitoring. Bandgap engineering provides an exciting approach for such technologies, owing to its tunable electronic and optical responses. As an example, I will present miniaturised computational spectrometers with various bandgap engineering methods that reconstruct incident spectra through engineered device responses and algorithms. These devices deliver high performance, with spectral resolution below 3 nm, and broadband operation from ~500 to 1600 nm, alongside proof-of-concept spectral imaging. More broadly, this approach highlights how bandgap engineering can enable ultracompact, adaptive, and cost-effective sensors that merge hardware with computation. Looking ahead, such intelligent light-sensing systems promise versatile solutions for material identification, real-time monitoring, and integrated photonics, paving the way toward a new generation of scalable optical technologies.

Biography

Zhipei Sun is Professor of Photonics at the Department of Electronics and Nanoengineering of Aalto University, Finland. He earned his PhD from the Institute of Physics, Chinese Academy of Sciences. Currently, he is actively involved with the European Research Council advanced grant, European quantum flagship, Academy of Finland Photonics and Quantum Flagships, and Acad-emy of Finland Centre of Excellence on quantum materials. His research interests include pho-tonics, nanomaterials and their applications.