Dr. Walid Belaid earned, from the University of Sidi Mohamed Ben Abdellah, a BS in Materials Physics (2015) and a PhD in Physics (2022). He is now a Research Fellow in the School of Electronic and Electrical Engineering at the University of Leeds. His work in computational nanophotonics and Group-IV optoelectronics has produced 30 peer-reviewed publications and numerous conference presentations and specialist workshops; professional service as a guest editor and reviewer, together with membership in international scientific societies; and recognition through leadership of the Horizon-Europe LASTSTEP programme and a Turkish BAP PI grant. Research-interest keywords: SiGe / SiGeSn quantum-well heterostructures; Mid-infrared photonic lasers & detectors; Quantum-confinement modelling; Optoelectronic nanomaterials; III-nitride semiconductors; Advanced photodetectors & solar-energy devices