João M. Leça holds a PhD in Chemistry and is a researcher at the Institute for Nanostructure, Nanomodelling, and Nanofabrication (i3N) at the University of Aveiro. He specializes in the development of innovative Optical Fiber Sensors, with a strong background in Materials Chemistry, Analytical Chemistry, and Biochemistry. His expertise encompasses the development, functionalization, and characterization of Optical Fiber Sensors, alongside advanced proficiency in chromatographic techniques, spectrometry, and spectroscopy.