This hands-on activity will guide you in making a synthetic gecko tape with micron sized hairs that mimics that behavior of the gecko foot. The process is called "nanomolding." Also described is an easy setup using Legos for testing how much weight the gecko tape can hold. Significant amount of research is ongoing in the field of synthetic Gecko tape due to its wide variety of applications. This program gives a glimpse of one of the methods used by researchers for making a synthetic gecko tape and its properties.
The gecko's amazing ability to cling to vertical or inverted surfaces is due to the interaction between nanoscale structures on its feet and tiny crevices on the wall or ceiling. The soles of gecko feet are made up of overlapping adhesive lamellae covered with millions of superfine hairs, or setae, each of which branches out at the end into hundreds of spatula-shaped structures. These flexible pads—each measuring only a few nanometers across—curve to fit inside unseen cracks and divots on the surface. The combined adhesion of these millions of pads holds the gecko in place.