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Nanoscale Characterization of Graphene Oxide-Based Epoxy Nanocomposite Using Inverted Scanning Microwave Microscopy.

C H Joseph1, Francesca Luzi2, S N Afifa Azman1

  • 1Department of Information Engineering, Università Politecnica delle Marche, Via Brecce Bianche, 60131 Ancona, Italy.

Sensors (Basel, Switzerland)
|December 23, 2022
PubMed
Summary
This summary is machine-generated.

Inverted scanning microwave microscopy (iSMM) precisely maps electrical properties of graphene oxide nanocomposites. This technique quantifies conductivity and dielectric constant at the nanoscale for advanced material characterization.

Keywords:
epoxy nanocompositesgraphene oxide (GO)inverted scanning microwave microscopy (iSMM)nanoscale electrical properties

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Area of Science:

  • Materials Science
  • Electrical Engineering
  • Nanotechnology

Background:

  • Scanning microwave microscopy (SMM) offers advanced quantitative electrical characterization at the nanoscale.
  • Graphene oxide-based nanocomposites are crucial for various technological applications.

Purpose of the Study:

  • To investigate the nanoscopic electrical properties of a graphene oxide-based epoxy nanocomposite using inverted scanning microwave microscopy (iSMM).
  • To provide high-resolution spatial mapping of local conductance and dielectric properties.

Main Methods:

  • Utilized inverted near-field scanning microwave microscopy (iSMM) for nanoscopic electrical analysis.
  • Performed high-resolution spatial mapping of local conductance.
  • Validated results using full-wave electromagnetic modeling.

Main Results:

  • Achieved quantitative analysis of the nanocomposite's electrical properties at the nanoscopic level.
  • Reported electrical conductivity in the order of ~10⁻¹ S/m.
  • Mapped the dielectric constant to a value of ~4.7 ± 0.2.

Conclusions:

  • iSMM is a powerful tool for detailed electrical characterization of nanocomposite materials.
  • The study successfully quantified key electrical parameters of the graphene oxide-epoxy nanocomposite.
  • Findings are validated, confirming the reliability of the iSMM technique for material analysis.