Two patterns (VIDEO)
Caption
Catalysts are highly selective; only certain reactants can trigger a particular catalytic reaction. Due to this selectivity, catalysts in a solution can reveal the identities of the reactants. If the right reactants are added to the fluid, then the resulting reaction generates the spontaneous flow of the fluid; the flow, in turn, can bend and shape flexible objects immersed in the solution. If flexible posts are tethered to the base of a fluid-filled chamber and coated with specific enzymes, then the added reactants will force the posts to bend in different directions and form distinct visual patterns.
Credit
M. Mosnadi
Usage Restrictions
No restrictions.
License
Public Domain