Click on the link above to view nano-scale structures of atoms that have been created via electroplating. The spontaneous arrangement of atoms resemble larger biological structures...like this fern.
My favorite is the last picture, which somewhat resembles the microvilli of the small intestine where nutrients are absorbed.
|made of metallic atoms|
|microvilli made of living cells|
The atomic structures are so small that they can only be seen via electron microscopes. The scanning electron microscope allows for a 3D image as a high energy electron beam is scanned over the object surface and a detector measures the amount of surface secondary electrons that are scattered.