Fig. 1From: SERS Detection of Biomolecules by Highly Sensitive and Reproducible Raman-Enhancing Nanoparticle ArrayTop-view scanning electron microscope images. a, b Anodic aluminum oxide (AAO) template. c, d Ag nanoparticle array grown in the AAO template. a, c magnification 100 K. b, d magnification 200 KBack to article page