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Origami Inspired Self-assembly of Patterned and Reconfigurable Particles
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Foldable nanopaper antennas for origami electronics.

Masaya Nogi1, Natsuki Komoda, Kanji Otsuka

  • 1The Institute of Scientific and Industrial Research, Osaka University, Mihogaoka 8-1, Ibaraki, Osaka, Japan. nogi@eco.sanken.osaka-u.ac.jp

Nanoscale
|April 12, 2013
PubMed
Summary

Researchers developed foldable antennas using nanopaper and silver nanowires. These antennas offer high sensitivity and foldability, enabling mechanical tuning for future portable electronics.

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Area of Science:

  • Materials Science
  • Electrical Engineering
  • Nanotechnology

Background:

  • Foldable antennas are crucial for portable electronics but existing substrates like plastic and paper have limitations.
  • Plastic substrates offer flexibility and sensitivity but lack foldability, while paper substrates are foldable but have poor sensitivity due to rough surfaces.

Purpose of the Study:

  • To fabricate novel foldable antenna substrates using nanopapers derived from cellulose nanofibers.
  • To integrate silver nanowires onto nanopapers to create high-performance foldable antennas.
  • To investigate the sensitivity, foldability, and tunability of these novel nanopaper antennas.

Main Methods:

  • Fabrication of nanopapers from 30 nm wide cellulose nanofibers, resulting in smooth surfaces and high foldability.

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  • Printing silver nanowires onto the nanopaper substrates to form antenna lines.
  • Characterization of the antenna performance, including sensitivity and mechanical tunability.

    • Main Results:

    • The fabricated nanopaper antennas exhibit both high sensitivity, attributed to their smooth surfaces, and high foldability, due to their network structure.
    • The antennas demonstrate mechanical tunability of resonance points over a wide frequency range without external components.
    • The combination of smooth surface and network structure in nanopaper substrates enhances antenna performance.

    Conclusions:

    • Nanopaper antennas with silver nanowires are a promising solution for foldable antenna requirements in portable electronics.
    • The developed antennas offer a unique combination of high sensitivity, foldability, and mechanical tunability.
    • These findings pave the way for the realization of advanced foldable electronic devices.