Robostrider
![](http://upload.wikimedia.org/wikipedia/commons/thumb/4/46/Robostrider_6-FIG2.jpg/195px-Robostrider_6-FIG2.jpg)
![](http://upload.wikimedia.org/wikipedia/commons/thumb/e/ef/Robostrider_faceoff2.jpg/195px-Robostrider_faceoff2.jpg)
Robostrider is a self-propelled robot which uses similar mechanisms to real water striders in order to glide along the surface of the water. It was developed at Cambridge, Massachusetts.[1]
Robostrider does not break the surface layer of the water despite leg speeds of 18 centimetres per second (7.1 in/s) it generates both capillary waves and vortices while in motion, as do Gerridae. Hu and Bush state that Robostrider moves "in a style less elegant than its natural counterpart" [1] but point out that it can cover 20 centimetres (7.9 in) in five strides, with one winding.