Methods for forming nanofiber adhesive structures

A method for forming a nanofiber adhesive structure, the method comprising:

• forming a plurality of parallel fiber bundles and a first binder into a structure, the plurality of fiber bundles comprising a plurality of fibers in a second binder;
• cutting the structure across the fiber bundles, the first binder, and the second binder;
• dissolving a portion of the first binder from the structure to expose end portions of the plurality of fiber bundles having a first length using a first solvent;
• and
• dissolving a portion of the second binder from the structure to expose end portions of the plurality of fibers having a second length using a second solvent;
• and
• wherein the second length being less than the first length, and the first binder is generally insoluble by the second solvent and the second binder is generally insoluble by the first solvent.

A method for forming a nanofiber adhesive structure, the method comprising:

• providing a structure comprising a plurality of generally parallel fiber bundles in a first binder, the fiber bundle comprising a plurality of generally parallel fibers in a second binder, and the plurality of fibers comprising a diameter less than about 400 nanometers;
• dissolving a portion of the first binder from the structure to expose end portions of the plurality of fiber bundles having a first length using a first solvent of about 100 microns;
• dissolving a portion of the second binder from the structure to expose end portions of the plurality of fibers having a second length using a second solvent of about 15 microns;
• and
• wherein the first binder is generally insoluble by the second solvent and the second binder is generally insoluble by the first solvent.