Molecular add-on stick particles each other, keeping its shape to some extent.
I tested it as the video below. The name “Molecular” is correct. That’s very similar with molecular I saw by SEM (Scanning Electron Microscope) like this:
Oh, and I accidentally bumped Photonic Crystals Group ICMM | art and craft of nano-photonics materials as the source of the images. And Nature has been publishing sub-journal named “Nature Photonics“.
Many images came from microscope seems to be reproduced by Blender, and vice versa.
The add-on allow us to imitate such molecular images. What if you found a monkey among the atoms? Blender can do that.