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Printed copper-nanoplate conductor for electro-magnetic interference.

Changning Li1, Saurabh Khuje1, Donald Petit2

  • 1Department of Mechanical and Aerospace Engineering, University at Buffalo, The State University of New York, Buffalo, NY 14260, United States of America.

Nanotechnology
|December 7, 2021
PubMed
Summary
This summary is machine-generated.

Elemental copper (Cu) nanoplates offer high conductivity for printable electronics. These versatile Cu conductive inks demonstrate excellent performance in high-temperature applications.

Keywords:
conductive inkcopper nanoplateshigh-temperature conductorsize engineering

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Area of Science:

  • Materials Science
  • Nanotechnology
  • Electrical Engineering

Background:

  • Elemental copper (Cu) nanocrystals are promising conductive ink materials for printable electronics due to their high electrical conductivity.
  • Developing versatile Cu conductive inks is crucial for advancing various printing technologies.

Purpose of the Study:

  • To synthesize single crystalline Cu nanoplates using a facile hydrothermal method.
  • To investigate the size engineering of Cu nanoplates using the LaMer model.
  • To evaluate the performance of Cu conductive ink for high-temperature printable electronics.

Main Methods:

  • Facile hydrothermal synthesis of single crystalline Cu nanoplates.
  • Application of the LaMer model for size engineering of nanoplates.
  • Printing of Cu traces and evaluation of electrical conductivity and electromagnetic interference (EMI) shielding.
  • Testing conductivity retention on flexible alumina ceramic aerogel substrates at elevated temperatures.

Main Results:

  • Synthesized single crystalline Cu nanoplates with tunable sizes.
  • Achieved high electrical conductivity of 6 MS m-1 for printed Cu traces.
  • Demonstrated significant EMI shielding efficiency of 75 dB at an average thickness of 11μm.
  • Maintained 87% of conductivity at 400 °C on alumina ceramic aerogel substrates.

Conclusions:

  • Cu nanoplates synthesized via hydrothermal methods are suitable for versatile conductive ink applications.
  • The printed Cu traces exhibit excellent electrical and EMI shielding properties.
  • Cu conductive ink shows great potential for high-temperature printable electronics when combined with flexible ceramic aerogel substrates.