This image was acquired from
wikimedia. It was marked as Public Domain or CC0 and is free to use. To verify, go to the source and check the information there.
Keywords from Image Description:
Comparison STM topographic image of section of graphene sheet with spectroscopy images of electron interference. en Comparison of an STM topographic image of section of graphene sheet top left with spectroscopy images of electron interference at three different energies shows strong interference patterns generated by atomic scale