Figure 3From: Highly Uniform Epitaxial ZnO Nanorod Arrays for NanopiezotronicsPerspective view (a) and top view (b) FESEM images on bottom contacted, anchored ZnO nanorods prepared by hard-mask method. The arrays show similar geometrical features as all-ZnO nanostructures. When the aspect ratio is high, during the drying process (c) the nanorods attach to each other at their tipsBack to article page