Robert Langer. Diagnostics Basel 4 , — This self-quenching property is problematic for this microneedle-delivered recording system because it limits the packing density of the dye, and thus its brightness. See Subscription Options. It is another objective of the present to provide method of making and using such a device to allow painless, facile, and quick application of the dyes to the skin. The quantum dots after being administered in the skin of rodents. Nat Mater 15 , — Find articles by Joe Collins. Selection of Imaging Agent, Loading and Effect of wavelength on signal attenuation.