Magnetically tunable plasmon coupling of nanoshells enabled by space-free confined growth
AssigneeThe Regents of the University of California
InventorsYadong Yin, Zhiwei Li
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Abstract
A method of forming magnetic/plasmonic hybrid structures is disclosed. The method includes synthesizing colloidal magnetic nanoparticles; modifying the magnetic nanoparticles in a solution of a polymeric ligand; binding metal seed nanoparticles to the surface of the magnetic nanoparticles; and performing a seed-mediated growth on the metal seed nanoparticles by reducing a metal salt in solution to form the magnetic/plasmonic hybrid structures.
Claims11
A method of forming magnetic/plasmonic hybrid structures comprising:
- synthesizing colloidal magnetic nanoparticles;
- modifying the magnetic nanoparticles in a solution of a polymeric ligand;
- binding metal seed nanoparticles to the surface of the magnetic nanoparticles;
- performing a seed-mediated growth on the metal seed nanoparticles by reducing a metal salt in solution to form the magnetic/plasmonic hybrid structures;
- and
- coating the magnetic nanoparticles containing surface-attached metal seed nanoparticles with a polymer shell of resorcinol-formaldehyde resin prior to performing the seed-mediated growth.
A method of forming magnetic/plasmonic hybrid structures comprising:
- synthesizing colloidal magnetic nanoparticles;
- modifying the magnetic nanoparticles in a solution of a polymeric ligand;
- binding metal seed nanoparticles to the surface of the magnetic nanoparticles;
- performing a seed-mediated growth on the metal seed nanoparticles by reducing a metal salt in solution to form the magnetic/plasmonic hybrid structures;
- and
- mediating and confining the seeded growth of the metal on the magnetic nanoparticles with the polymeric ligand, the polymeric ligand forming a deformable and permeable polymer shell on the magnetic nanoparticles that suppresses a deposition of metal atoms and limit growth of the metal atoms along a radial direction.
A method of forming magnetic/plasmonic hybrid structures comprising:
- synthesizing colloidal magnetic nanoparticles;
- modifying the magnetic nanoparticles in a solution of a polymeric ligand;
- binding metal seed nanoparticles to the surface of the magnetic nanoparticles;
- performing a seed-mediated growth on the metal seed nanoparticles by reducing a metal salt in solution to form the magnetic/plasmonic hybrid structures, and
- wherein the magnetic/plasmonic hybrid structures comprises a plurality of the magnetic/plasmonic hybrid structures, further comprises:
- magnetically assembling the plurality of the magnetic/plasmonic hybrid structures into plasmonic chains in an active transparent display or an anti-counterfeiting device.
Dependencies are inferred from the claim text.