This is what a solid made of electrons looks like

Amazing stuff!

"If the conditions are just right, some of the electrons inside a material will arrange themselves into a tidy honeycomb pattern — like a solid within a solid. Physicists have now directly imaged these ‘Wigner crystals’, named after the Hungarian-born theorist Eugene Wigner, who first imagined them almost 90 years ago. ..."

This is what a solid made of electrons looks like Physicists have imaged elusive ‘Wigner crystals’ for the first time.

This scanning tunneling microscope image of a graphene sheet reveals that a ‘Wigner crystal’ — a honeycomb arrangement of electrons — has formed inside a layered structure underneath.