An overlay of three images at successive stages of forceinduced chemical change. The ribbons represent polymer molecules attached to the mechanophore. The blue image is the start of the reaction; the yellow image represents the end of the reaction. Elongation of the polymer caused by flow places tension on the mechanophore. The streamlines in the background represent the velocity of the solvent molecules rushing past the polymer (the closer the lines, the faster the solvent velocity). The green ribbon has been omitted for clarity.
[credit: Benjamin Grosser, Imaging Technology Group, Beckman Institute, UIUC]
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