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Smectic Layer Origami via Preprogrammed Photoalignment.

Ling-Ling Ma1, Ming-Jie Tang1, Wei Hu1

  • 1National Laboratory of Solid State Microstructures, Collaborative Innovation Center of Advanced Microstructures and College of Engineering and Applied Sciences, Nanjing University, Nanjing, 210093, China.

Advanced Materials (Deerfield Beach, Fla.)
|February 11, 2017
PubMed
Summary
This summary is machine-generated.

Researchers achieved 3D smectic layer origami using photoalignment films, enabling precise control over focal conic domain (FCD) geometry and clustering in soft materials. This breakthrough offers new possibilities for advanced functional materials.

Keywords:
origamiphotoalignmentsmectic focal conic domainssuperstructures

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Area of Science:

  • Soft Matter Physics
  • Materials Science
  • Liquid Crystal Science

Background:

  • Hierarchical architectures are crucial in soft materials.
  • Focal conic domains (FCDs) in smectic liquid crystals exhibit ordered lamellar structures and are of significant research interest.
  • Simultaneously controlling FCD geometry and clustering remains a challenge.

Purpose of the Study:

  • To demonstrate 3D smectic layer origami for precise control over FCDs.
  • To achieve simultaneous tailoring of FCD geometry and clustering characteristics.
  • To explore the creation of novel hierarchical superstructures in soft materials.

Main Methods:

  • Utilized a 2D preprogrammed photoalignment film to guide 3D smectic layer origami.
  • Investigated the control over domain size, shape, and orientation of FCDs.
  • Analyzed the lattice symmetry of fragmented toric FCDs.

Main Results:

  • Successfully demonstrated full control of hierarchical superstructures, including domain size, shape, orientation, and lattice symmetry.
  • Achieved fragmented toric FCDs with controllable symmetry.
  • Observed intriguing polarization-dependent diffraction due to symmetry breaking and liquid crystal optical anisotropy.

Conclusions:

  • The study establishes a method for 3D smectic layer origami, offering unprecedented control over FCDs.
  • This work advances the scientific understanding of self-assembled soft materials.
  • The findings may inspire the development of new advanced functional materials and devices.