Praseodymium orthoscandate imaged using ptychograpy.

What you see here are three different kinds of atoms. The pairs of bright blobs joined together are praseodymium. The single bright blobs are scandium. And the faint red blobs are oxygen.

Electrons were fired at a sample of praseodymium orthoscandate; when these electrons hit the atoms in the material, they bounced off.

By measuring the bounce patterns, or scattering, of these electrons as the beam is moved around, the imaging system can generate an image of what the electrons are bouncing off.

https://www.sciencealert.com/this-stunning-image-is-the-highest-resolution-weve-ever-seen-atoms