Figure 1From: Intracellular ZnO Nanorods Conjugated with Protoporphyrin for Local Mediated Photochemistry and Efficient Treatment of Single Cancer CellSEM images taken for the ZnO nanorods grown at the tip of the present PDT device, in a SEM image of a silver-coated tip, in b and c SEM images of ZnO NRs grown on the silver-coated sub-micrometer tipBack to article page