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Area of Science:

  • Nanoscience and Nanotechnology
  • Materials Science
  • Electrochemistry

Background:

  • Nanopipettes are increasingly vital tools in nanoscience.
  • Applications range from imaging to nanoscale sensing.
  • Fabrication of complex 3D nanostructures remains a challenge.

Purpose of the Study:

  • To demonstrate the capability of nanopipettes for building complex free-standing 3D nanostructures.
  • To showcase the use of a double-barrel nanopipette device for advanced nanoscale fabrication.
  • To highlight the integrated approach for both nanostructure engineering and topographical mapping.

Main Methods:

  • Utilized a double-barrel nanopipette device for controlled ionic flux delivery.
  • Employed electrochemical control for localized precursor species delivery.
  • Integrated dynamic ion conductance feedback for precise probe-to-substrate distance control.

Main Results:

  • Successfully fabricated high aspect ratio copper pillars, zigzag, and Γ-like structures.
  • Achieved high-resolution 3D nanostructure patterning using nanopipettes with 30-50 nm tip openings.
  • Demonstrated topographical mapping of fabricated nanostructures using the same nanopipette probe.

Conclusions:

  • Nanopipettes offer a versatile and robust platform for high-resolution 3D nanostructure fabrication.
  • The integrated printing and read-out approach enhances reliability and quality in nanoscale patterning.
  • This method advances capabilities in nanoscale engineering and characterization.