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Atomically Traceable Nanostructure Fabrication
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Nano-LED induced chemical reactions for structuring processes.

Martin Mikulics1,2, Zdenĕk Sofer3, Andreas Winden4

  • 1Ernst Ruska Zentrum (ER-C-2), Forschungszentrum Jülich GmbH D-52425 Jülich Germany.

Nanoscale Advances
|September 22, 2022
PubMed
Summary
This summary is machine-generated.

We developed a nano-LED array technique for precise chemical reaction control. This maskless method enables nanoscale structuring for applications in lithography and polymerization, creating features from nanometers to micrometers.

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Area of Science:

  • Materials Science
  • Nanotechnology
  • Photochemistry

Background:

  • Precise control over chemical reactions is crucial for fabricating micro- and nanoscale structures.
  • Existing lithography and polymerization techniques have limitations in resolution and scalability.

Purpose of the Study:

  • To present a novel maskless structuring technique utilizing nano-LED arrays.
  • To demonstrate the application of this technique in both near-field and far-field regimes for chemical reaction initialization.

Main Methods:

  • Utilizing an array of nano-light-emitting diodes (nano-LEDs) to initiate chemical reactions.
  • Employing the technique for photolithography with DiazoNaphthoQuinone-(DNQ)-sulfonate resist in the near-field.
  • Applying the technique for polymerization of bisphenol A-glycidyl methacrylate (Bis-GMA) in the far-field.

Main Results:

  • Fabrication of holes down to approximately 75 nanometers in diameter using nano-LED lithography.
  • Creation of spherical cone-shaped 3D objects with diameters from approximately 480 nm to 20 micrometers via nano-LED initiated polymerization.
  • Confirmation of material modification through Raman spectroscopy.

Conclusions:

  • The nano-LED array technique offers a versatile maskless approach for structuring photosensitive materials.
  • The method allows for precise control over feature sizes, ranging from nanometers to micrometers.
  • This technology holds potential for advanced fabrication in microelectronics, photonics, and biomaterials.