Ask a chemist for flowers, and he’ll likely give you these wonderful crystal flowers!
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Chemistry professor Dean Campbell of Bradley University and his team were trying to develop new catalysts by making a solution of copper acetylacetonate in tetrahydrofuran, then soaking slabs of polydimethylsiloxane in the jar. After the experiment, Campbell found wonderful crystals that look like wildflowers forming on the wall of the beaker.
Source: neatorama