Climbing Mini Whegs

Climbing Mini-Whegs™ scales vertical glass surfaces using compliant, adhesive feet. It has one drive motor that turns all four wheel-legs in an alternating diagonal gait.

The following high-speed video show how the four-spoked wheel-legs apply and gradually peel the adhesive feet (in this case Scotch® tape).
With a novel adhesive manufactered by the Gottlieb Binder Company in collaboration with the Max-Planck Institute , the robot is capable of climbing vertical surfaces with the addition of a long tail.
On a 60-degree incline the robot requires a shorter tail, but can transition around the external angle.