Cover Picture: Kinetically Controlled, Shape‐Directed Assembly of Nanorods (Small 2/2008)

The cover picture shows various superstructures generated using kinetically controlled assembly. These scanning electron microscopy images are overlaid on an image of the building blocks—two part gold/polypyrrole nanorods—that constitute each structure. Templating orients and spaces the nanorods such that they form discrete structures. Photolithography preselects rods to assemble into a given structure, thereby dictating the resulting shape. This kinetic control allows for designer assemblies that incorporate more than 106 building blocks. For more information, please read the Communication by C. Mirkin et al., beginning on page 206.