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Jacques Marteau is the laureate of the CNRS 2022 Innovation Medal. He's an associate professor at the Institute of Physics of the 2 Infinities (IP2I) of Lyon (southeastern France) and he identified the potential of a technology initially developed for basic research: the muon detector. An elementary particle naturally produced in the atmosphere, the muon crosses through matter over long distances without being absorbed. This makes it possible to explore large structures in 3D, as well as to provide answers to volcanology, geology, and even climatology questions. After a number of patents and industrial contracts, in 2021 Marteau and his team launched the start-up Muodim, which targets a very large market for non-destructive testing applications, aimed for example at the steelmaking, geophysical prospecting, or civil engineering fields.