Dry adhesives

摘要

A dry adhesive comprising a micro-featured and nano-featured surface, and a compliant surface having a hardness of about 60 Shore A or less, the micro-featured and nano-featured surface and the compliant surface being capable of forming upon contact a dry adhesive bond with each other.

主权项

1. A dry self-adhesive surface comprising at least two areas, wherein:
a. at least one of said areas of the dry self-adhesive surface is a non-tacky micro-featured and nano-featured area, said micro-featured and nano-featured areas having micropores and nanopores, wherein said micropores and nanopores define a roughness average in amplitude (Ra) between about 0.2 μm and about 3.0 μm with a mean spacing of profile irregularities (RSm) between about 20 nm and about 2000 nm, and b. at least one other of said areas of the dry self-adhesive surface is a non-tacky compliant area having a hardness of about 60 Shore A or less,the micro-featured and nano-featured area and the compliant area being capable of forming upon contact a dry adhesive bond with each other in which the compliant area conforms with the topography of the microporous and nano-porous area resulting in a reversible interlock of the compliant area in the micropores and nanopores of said micro-featured and nano-featured area.