Nanoparticle Size Characterization. Top, an AFM image of the Sundew adhesive. Individual nanoparticles corresponding to peaks observed in the vertical cross-section are identified by yellow circles. Bottom, a vertical cross-section through the nanofiber outlined by the yellow box at the top image. Diameters of the nanoparticles were calculated based on the diameter of the observed peaks using the Picoview® software package. Broader peaks indicate a group of nanoparticles that could not be individually resolved with AFM. All nanoparticles were in the range of 50-70 nm.