Nanofibrous articles
View Patent ↗Nanofibrous articles can be manufactured by a process that includes preparation of a surface of a substrate to provide an adhesion mechanism for securing the nanofibers to the surface. The nanofibers can be dispersed in an area near the substrate for the purpose of being adhered to the surface. If an ordered arrangement of nanofibers is required, an electric field can be provided in the area where the nanofibers are dispersed to selectively control an ordering of the nanofibers as they are adhered to the surface by the adhesion mechanism.
1. A method for manufacturing an ordered nanofibrous article, comprising:
preparing a surface of a substrate to provide an adhesion mechanism for a plurality of nanofibers;
dispersing a plurality of said nanofibers to be adhered to said surface;
providing an electric field to selectively control an ordering of said nanofibers while said nanofibers are being dispersed onto said surface having said adhesion mechanism, wherein the electric field at least selectively controls the ordering of said nanofibers prior to said nanofibers touching said surface.
2. The method according to claim 1 , further comprising selecting said nanofibers from at least one of carbon nanotubes, carbon nanohorns, alumina nanotubes, boron nitride nanotubes, carbon nanofibers, silica nanofibers, gold nanotubes, sliver nanotubes, or polymer nanotubes.
3. The method according to claim 1 , further comprising selecting said nanofibers to have a fiber thickness of less than about 500 nanometers.
4. The method according to claim 1 , further comprising exclusively providing said adhesion mechanism on selected areas of said surface to define an electronic circuit component, an electro-optical device, a sensor, or an energy storage element.
5. The method according to claim 1 , further comprising applying a coating to said nanofibers prior to said dispersing step.
6. The method according to claim 5 , further comprising removing at least a portion of said coating after said dispersing step.
7. The method according to claim 1 , further comprising aligning said nanofibers in a predetermined orientation aligned with said electric field.
8. The method according to claim 1 , further comprising selecting said adhesion mechanism from at least one of an adhesive material applied to said substrate or a physical modification of a material forming said substrate.
9. The method according to claim 8 , further comprising selecting said physical modification to include heating said substrate.
10. The method according to claim 1 , further comprising selecting a material forming said substrate to include a flexible or a conformable material.
11. The method according to claim 1 , further comprising selecting said plurality of nanofibers to include a plurality of nanofibers of different types.
12. The method according to claim 11 , further comprising selectively dispersing specific types of said nanofibers exclusively within selected areas of said substrate.
13. The method according to claim 11 , further comprising dispersing a mixture of said nanofibers of different types within selected areas of said substrate.
14. The method according to claim 1 , further comprising selecting said plurality of nanofibers to include nanofibers having different coatings.
15. The method according to claim 14 , further comprising selectively dispersing said nanofibers having a particular coating exclusively within selected areas of said substrate.
16. The method according to claim 14 , further comprising dispersing a mixture of said nanofibers having different coatings within selected areas of said substrate.