摘要:
Dry adhesives and methods for forming dry adhesives. A method of forming a dry adhesive structure (30) on a substrate (10), comprises: forming a template backing layer (12) of energy sensitive material on the substrate (10); forming a template layer (14) of energy sensitive material on the template backing layer (12); exposing the template layer (14) to a predetermined pattern of energy; removing a portion of the template layer (14) related to the predetermined pattern of energy, and leaving a template structure (20) formed from energy sensitive material and connected to the substrate (10) via the template backing layer (12).
摘要:
The present invention are methods for fabrication of micro- and/ or nano-scale adhesive fibers and their use for movement and manipulation of objects.
摘要:
Dry adhesives and methods for forming dry adhesives. A method of forming a dry adhesive structure (30) on a substrate (10), comprises: forming a template backing layer (12) of energy sensitive material on the substrate (10); forming a template layer (14) of energy sensitive material on the template backing layer (12); exposing the template layer (14) to a predetermined pattern of energy; removing a portion of the template layer (14) related to the predetermined pattern of energy, and leaving a template structure (20) formed from energy sensitive material and connected to the substrate (10) via the template backing layer (12).
摘要:
The present invention is a method that (i) allows for creating micro and/or nanostructures on either planar or non-planar three-dimensional surfaces in a single molding step, and (ii) allows for the molded production of complex high-aspect ratio micro and/or nanostructures including but not limited to cylinders, conical structures, low aspect-ratio channels, bumps, or posts. An example of such a complex structure are high aspect ratio pillars with enlarged "mushroom-shaped" or undercut tips which demonstrate enhanced, repeatable adhesion and shear strength on a variety of substrates when compared with other micro and/or nanostructures and unstructured materials. The mold of such a material requires an "undercut" feature that cannot be produced using typical micro/nano-molding processing techniques.
摘要:
A dry adhesive and a method of forming a dry adhesive. The method includes forming an opening (50) through an etch layer (40) and to a barrier layer (42), expanding the opening (50) in the etch layer (40) at the barrier layer (42), filling the opening (50) with a material (70), removing the barrier layer (42) from the material (70) in the opening (50), and removing the etch layer (40) from the material (70) in the opening (50).
摘要:
Present invention describes a patterned and coated micro- and nano-scale fibers elastomeric material for enhanced adhesion in wet or dry environments. A multi-step fabrication process including optical lithography, micromolding, polymer synthesis, dipping, stamping, and photopolymerization is described to produce uniform arrays of micron- scale fibers with mushroom- shaped tips coated with a thin layer of an intrinsically adhesive synthetic polymer, such as lightly crosslinked p(DMA-co-MEA).
摘要:
Present invention describes a patterned and coated micro- and nano-scale fibers elastomeric material for enhanced adhesion in wet or dry environments. A multi-step fabrication process including optical lithography, micromolding, polymer synthesis, dipping, stamping, and photopolymerization is described to produce uniform arrays of micron- scale fibers with mushroom- shaped tips coated with a thin layer of an intrinsically adhesive synthetic polymer, such as lightly crosslinked p(DMA-co-MEA).
摘要:
A dry adhesive and a method of forming a dry adhesive. The method includes forming an opening (50) through an etch layer (40) and to a barrier layer (42), expanding the opening (50) in the etch layer (40) at the barrier layer (42), filling the opening (50) with a material (70), removing the barrier layer (42) from the material (70) in the opening (50), and removing the etch layer (40) from the material (70) in the opening (50).
摘要:
A fabricated microstructure (10) comprising at least one protrusion (18) capable of providing an adhesive force at a surface of between about 60 and 2000 nano-Newtons. A stalk (12) supports the protrusion (18) at an oblique angle relative to a supporting surface. The microstructure can adhere to different surfaces.