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US 11,667,062 B2Granted
Nanostructures from laser-ablated nanohole templates
AssigneeUltra Small Fibers, LLC
InventorsWilliam Hudson Hofmeister, Alexander Yuryevich Terekhov, Jose Lino Vasconcelos da Costa, Kathleen Stacia Lansford, Deepak Rajput, Lloyd M. Davis
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Abstract
Solution casting a nanostructure. Preparing a template by ablating nanoholes in a substrate using single-femtosecond laser machining. Replicating the nanoholes by applying a solution of a polymer and a solvent into the template. After the solvent has substantially dissipated, removing the replica from the substrate.
Claims16
A method for fabricating a nanofiber array, comprising:
- providing a template comprising a transparent substrate having a surface, the surface comprising a plurality of nanoholes, each nanohole of the plurality being ablated in the surface using a laser;
- applying a flowable polymer into the plurality of nanoholes;
- and
- extracting an array of polymer nanofibers from the template;
- wherein the nanofibers have an aspect ratio of at least ten-to-one and a diameter of less than 1000 nanometers.
2 more elements
A method for fabricating a nanofiber array, comprising:
- providing a template comprising a transparent substrate having a surface, the surface comprising a plurality of nanoholes, each nanohole of the plurality being ablated in the surface using a laser;
- filling the plurality of nanoholes with a polymer resin;
- and
- lifting or peeling an array of polymer nanofibers away from the surface of the template;
- wherein the nanofibers have an aspect ratio of at least ten-to-one and a diameter of less than 1000 nanometers.
2 more elements
A method for fabricating an array of nanofibers, comprising:
- providing a template having a surface comprising a plurality of nanoholes, each nanohole of the plurality being ablated in the surface using a laser;
- applying a flowable polymer capable of forming a continuous film into the nanoholes until the flowable polymer covers at least a portion of the surface of the template and connects at least some of the plurality of nanoholes;
- allowing the flowable polymer to form the continuous film on the portion of the surface of the template;
- and
- removing the continuous film from the surface of the template;
- wherein the continuous film comprises an array of nanofibers having an aspect ratio of at least ten-to-one and a diameter of less than 1000 nanometers.
3 more elements
Dependencies are inferred from the claim text.