Flora Microscopia

Behold, bloom-like nanostructures grown at the Harvard School of Engineering and Applied Sciences. They are approximately 50 microns tall (1000 microns in a millimeter), and are cultivated in the laboratory through carefully-timed chemical reactions that allow the flowers to self-assemble.

The tiniest and most magnificent of blossoms.

(This collage, which states "Image courtesy of Wim L. Noorduin", was found here at: http://www.seas.harvard.edu/news/2013/05/beautiful-flowers-self-assemble-beaker)