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Fabrication of Magnetic Nanostructures on Silicon Nitride Membranes for Magnetic Vortex Studies Using Transmission Microscopy Techniques

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Harnessing Multi-Photon Absorption to Produce Three-Dimensional Magnetic Structures at the Nanoscale.

Matthew Hunt¹, Mike Taverne², Joseph Askey¹

¹School of Physics and Astronomy, Cardiff University, Cardiff CF10 3AT, UK.

Materials (Basel, Switzerland)

|February 13, 2020

Summary

Researchers are creating novel 3D nanostructured magnetic materials using two-photon lithography. This technique enables the fabrication of complex magnetic structures with unique physical properties for advanced applications.

Keywords:

magnetism nanoscale nanostructures three-dimensional two-photon lithography

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Optimizing Magnetic Force Microscopy Resolution and Sensitivity to Visualize Nanoscale Magnetic Domains

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Area of Science:

Materials Science
Nanotechnology
Physics

Background:

Three-dimensional (3D) nanostructured magnetic materials are gaining interest due to novel physical phenomena.
These phenomena include topological spin textures, magnetochiral effects, and ultrafast magnetic effects like the spin-Cherenkov effect.

Purpose of the Study:

To detail the physics of two-photon lithography for fabricating 3D magnetic nanostructures.
To review existing studies utilizing this fabrication method.
To explore advancements for sub-100 nm feature sizes and compare with other direct write techniques.

Main Methods:

Two-photon lithography for creating 3D polymer nanostructures at the 100 nm scale.
Post-processing and deposition techniques to achieve arbitrary 3D magnetic nanostructure geometries.
Non-linear optical techniques and advanced post-processing for sub-100 nm feature sizes.

Main Results:

Two-photon lithography enables the precise fabrication of 3D polymer scaffolds.
Integration with magnetic material deposition yields complex 3D magnetic nanostructures.
Methods for achieving feature sizes below 100 nm have been explored.

Conclusions:

Two-photon lithography is a versatile method for producing advanced 3D nanostructured magnetic materials.
Further developments promise even finer feature sizes and expanded applications.
Comparison with other methods highlights the unique capabilities of two-photon lithography.