This is different from Microsuction tape where adhesion of object is achieved by microscopic bubbles on the surface that function as small suction cups.
Although basic principles of sticky pads are simple, physics behind may be complex due to many specific and sometimes conflicting requirements arising from practical use.
Designs seek to achieve certain level of adhesion (e.g. for use on vertical or very steep surfaces) without compromising easy detachment and continuous use without residual left-over.
[4] Other development includes designs that find inspiration in nature, especially in animals that are able to climb walls and ceilings such as geckos, [5] [6] [7] [8] [9] various species of insects [10] , tree frogs [11] , or chameleons.
[12] Mechanisms of insects that can scale walls and ceilings help understand how to produce surfaces with extremely high friction that don't exhibit too much sticking for practical applications.