Back to results
US 9,850,128 B2Granted
3-dimensional pattern transfer nanomanufacturing
AssigneeUniversity of South Carolina
InventorThomas Crawford
Life of this patent
Estimating the term…
Abstract
Methods for forming a multi-layered nanoscale structure by forming a stack of individual polymeric layers on a substrate are provided. Each individual polymeric layer comprises a cured polymeric material immobilizing a pattern of magnetic nanoparticles. The pattern of magnetic nanoparticles can be different within each individual polymeric layer due to their nature of formation.
Claims18
A method of forming a multi-layered nanoscale structure, the method comprising:
- forming a stack of individual polymeric layers on a substrate, each individual polymeric layer comprising a cured polymeric material immobilizing a pattern of magnetic nanoparticles, wherein each individual polymeric layer is formed on one another by repeating, for each individual polymeric layer, a process of:
- flowing a colloidal suspension over the substrate and under a recording head, wherein the colloidal suspension comprises a plurality of magnetic nanoparticles suspended in a fluid;
- immobilizing a pattern of the magnetic nanoparticles over the substrate using the recording head;
- flushing the colloidal suspension from between the substrate and the recording head to leave the pattern of magnetic nanoparticles immobilized over the substrate;
- introducing a curable polymeric material between the substrate and the recording head;
- moving the recording head closer to the substrate;
- polymerizing the curable polymeric material to form the individual polymeric layer securing the pattern of magnetic nanoparticles immobilized over the substrate;
- and
- moving the recording head away from the substrate to leave the individual polymeric layer over the substrate,
- wherein the pattern of magnetic nanoparticles in each individual polymeric layer is different from each other.
7 more elements
A method of forming a multi-layered nanoscale structure, the method comprising:
- flowing a first colloidal suspension over a substrate and under a recording head, wherein the first colloidal suspension comprises a plurality of first magnetic nanoparticles suspended in a first fluid;
- immobilizing a first pattern of the first magnetic nanoparticles over the substrate using the recording head;
- flushing the first colloidal suspension from between the substrate and the recording head to leave the first pattern of first magnetic nanoparticles immobilized over the substrate;
- introducing a first curable polymeric material between the substrate and the recording head;
- moving the recording head closer to the substrate;
- polymerizing the first curable polymeric material to form a first polymeric layer securing the first pattern of first magnetic nanoparticles immobilized over the substrate;
- moving the recording head away from the substrate to leave the first polymeric layer on the substrate;
- flowing a second colloidal suspension between the substrate and the recording head, wherein the second colloidal suspension comprises a plurality of second magnetic nanoparticles suspended in a second fluid;
- immobilizing a second pattern of the second magnetic nanoparticles over the substrate using the recording head;
- flushing the second colloidal suspension from between the substrate and the recording head to leave the second pattern of first magnetic nanoparticles immobilized over the substrate;
- introducing a second curable polymeric material between the substrate and the recording head;
- moving the recording head closer to the substrate;
- polymerizing the second curable polymeric material to form a second polymeric layer securing the second pattern of second magnetic nanoparticles immobilized over the substrate, wherein the first polymeric layer is positioned between the second polymeric layer and the substrate;
- and
- moving the recording head away from the substrate to leave the second polymeric layer on the first polymeric layer.
12 more elements
Dependencies are inferred from the claim text.