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Origami Inspired Self-assembly of Patterned and Reconfigurable Particles
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Self-Assembly of Three-Dimensional Nanoporous Containers.

Jaihai Wang1, Mira Patel, David H Gracias

  • 1Department of Chemical and Biomolecular Engineering, Johns Hopkins University, 3400 N. Charles Street, Baltimore, Maryland 21218, USA.

Nano
|July 24, 2010
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Summary

Researchers created 3D cubic containers with nanoporous walls using self-assembling 2D cruciforms and solder hinges. These novel containers show promise for molecular separations and cell therapies.

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Area of Science:

  • Materials Science
  • Nanotechnology
  • Chemical Engineering

Background:

  • Advanced materials with controlled porosity are crucial for applications in separation and therapy.
  • Self-assembly offers a scalable route to complex nanostructures.
  • Fabricating three-dimensional (3D) containers from two-dimensional (2D) precursors presents unique challenges.

Purpose of the Study:

  • To develop a novel strategy for constructing 3D containers with nanoporous walls.
  • To utilize self-assembly of lithographically patterned 2D cruciforms for 3D structure formation.
  • To explore the potential applications of these 3D containers in molecular separations and cell-based therapies.

Main Methods:

  • Fabrication of 2D cruciforms with open windows via lithography.
  • Photolithographic patterning of solder hinges to connect cruciform units.
  • Deposition of polystyrene particles and subsequent metal electrodeposition to form nanoporous walls.
  • Dissolution of particles and thermal activation of solder hinges for spontaneous 3D folding.

Main Results:

  • Successful construction of 3D cubic containers from 2D cruciform precursors.
  • Formation of containers with well-defined nanoporous walls.
  • Demonstration of spontaneous self-assembly into the desired 3D architecture upon heating.
  • Characterization of the structural integrity and porosity of the resulting containers.

Conclusions:

  • The described strategy provides an effective method for fabricating 3D containers with nanoporous walls.
  • These 3D nanoporous containers are promising candidates for advanced molecular separation applications.
  • The developed containers hold potential for future applications in cell-based therapies due to their unique structure.