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Nanopipette/Nanorod-Combined Quartz Tuning Fork⁻Atomic Force Microscope.

Sangmin An1, Wonho Jhe2

  • 1Department of Physics & Astronomy, Seoul National University, Seoul 08826, Korea. jmk8755@snu.ac.kr.

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Summary

We developed advanced atomic force microscopy (AFM) tools for precise nanolithography and nanoscratching. These methods utilize capillary-condensed water and shear dynamics for detailed nanoscale material manipulation and analysis.

Keywords:
QTF–AFMnanolithographynanopipettenanorodnanoscratching

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Area of Science:

  • Nanoscience and Nanotechnology
  • Materials Science
  • Atomic Force Microscopy

Background:

  • Atomic force microscopy (AFM) is a powerful tool for nanoscale imaging and manipulation.
  • Existing AFM techniques often require controlled environments and specialized probes.
  • In situ detection of dynamic interactions during nanoscale processes is challenging.

Purpose of the Study:

  • To introduce novel nanopipette/quartz tuning fork (QTF)-AFM and nanorod/QTF-AFM systems.
  • To demonstrate nanolithography and nanoscratching with in situ shear dynamics detection.
  • To explore capillary-condensed water meniscus-mediated and electric field-assisted liquid ejection for nanolithography.

Main Methods:

  • Utilized a nanopipette/QTF-AFM for nanolithography via capillary-condensed water meniscus and electric field assistance.
  • Employed a nanorod/QTF-AFM with force sensing for nanoscratching and in situ shear dynamics detection.
  • Investigated Au nanoparticle-aggregated nanowire production using nanomeniscus-based particle stacking.

Main Results:

  • Achieved low-bias voltage (~10 V) nanolithography in ambient conditions.
  • Successfully produced and analyzed Au nanoparticle-aggregated nanowires.
  • Demonstrated in situ detection of shear dynamics during nanoscratching with high sensitivity.

Conclusions:

  • The developed nanopipette/QTF-AFM and nanorod/QTF-AFM systems offer versatile platforms for advanced nanolithography and nanoscratching.
  • In situ shear dynamics detection provides valuable insights into mechanical interactions at the nanoscale.
  • These techniques enable precise material manipulation and fabrication of nanostructures.