nano4dThe 4D STEM-EELS technique reported here was enabled by matching a hh-brhtness FE-STEM, equipped with a rotation holder [24], with a hh-acquisition-rate EELSThe 4D STEM-EELS technique reported here was enabled by matching a hh-brhtness FE-STEM, equipped with a rotation holder [24], with a hh-acquisition-rate EELS