Finally, SSVP can use wavelength-selective solubility to achieve precise spatial control over dissolution kinetics. For example, spatially and temporally varied UV exposure can produce different degrees of cure and thus different dissolution rates. Demonstrating this concept with a printed 50/50 volume core-shell structure that did not undergo thermal treatment, the outer shell dissolved in ~20 minutes, followed by a slower dissolution of the print's core over ~5 hours (Fig. and). Extending this to achieve continuous gradients in dissolution kinetics could be highly applicable to drug delivery and implantable devices.