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Origami Inspired Self-assembly of Patterned and Reconfigurable Particles
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Plasmonic 3D Self-Folding Architectures via Vacuum Microforming.

Ye Yu1, Pierre Lorenz2, Carsten Strobel1

  • 1Institute of Semiconductors and Microsystems, Technische Universität Dresden, Nöthnitzer Straße 64, 01187, Dresden, Germany.

Small (Weinheim an Der Bergstrasse, Germany)
|December 7, 2021
PubMed
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Researchers developed a fast vacuum microforming technique for 3D self-folding microarchitectures. This method integrates advanced optical properties, enabling new possibilities for optical sensing and identification devices.

Area of Science:

  • Materials Science
  • Nanotechnology
  • Optical Engineering

Background:

  • 3D self-folding microarchitectures offer advanced device integration potential.
  • Incorporating diverse functionalities into microarchitectures is challenging due to limited folding force and material choices.
  • Self-folding microarchitectures with advanced optical properties remain largely undemonstrated.

Purpose of the Study:

  • To develop a novel self-folding technique for microarchitectures.
  • To integrate advanced optical properties into 3D self-folding structures.
  • To demonstrate the feasibility of fast, functionalized microarchitectures for sensing and identification.

Main Methods:

  • Development of a unique vacuum microforming technique for rapid microarchitectural folding.
Keywords:
colloidal lithographygap plasmonslaser ablationmetal-insulator-metal plasmonic nanostructureself-assembly

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  • Fabrication of metal-insulator-metal (MIM) plasmonic nanostructures.
  • Integration and characterization of plasmonic properties within 3D folded structures.

    • Main Results:

    • Demonstrated self-folding of microcubes completed within 30 milliseconds, significantly faster than existing methods.
    • Achieved wide, angle-independent optical behavior and high environmental sensitivity using MIM plasmonic nanostructures.
    • Confirmed preservation of superb plasmonic properties in 3D architectures post-folding.

    Conclusions:

    • Vacuum microforming offers the fastest known self-folding process for microarchitectures, compatible with high-volume fabrication.
    • Successfully integrated advanced optical properties into 3D self-folding structures.
    • Paved the way for untethered optical sensing and identification applications using functionalized microarchitectures.