| 摘要 |
A device is disclosed that includes a first polymer body (20, 30) having tacky properties. The first polymer body (20, 30) has a substantially- flat exterior surface (22). One or more protrusions (24, 34) are disposed on the substantially- flat exterior surface (22) of the first polymer body. When the one or more protrusions (24, 34) are in contact with a substantially- flat exterior surface (22) of a second polymer body (26) having tacky properties, the adhesive force between the one or more protrusions (24, 34) and the substantially- flat exterior surface (22) is less than the force of gravity on the first polymer body. |
