In the reportage, scientists Ota Frank, Milan Bouša and Martin Jindra invited  Eva Kézrova to our Raman spectrometry laboratory for some graphene measurements... They are working with graphene, for example, in the development of nanomaterials for electronics ... (in Czech)
More on the link  (from 7:23 min)https://program.rozhlas.cz/zaznamy#/plus/2019-02-01