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Bio-Inspired Subnanofluidics: Advanced Fabrication and Functionalization.

Jue Hou1, Chen Zhao1, Huacheng Zhang1

  • 1Chemical and Environmental Engineering, School of Engineering, RMIT University, Melbourne, Victoria, 3000, Australia.

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|May 19, 2023
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Summary

Artificial subnanofluidic channels mimic biological ion channels for enhanced separation and sensing. This review details fabrication and functionalization methods for these advanced sub-1-nanometer systems.

Keywords:
2D materialsfunctionalizationion channelsnanochannelsnanotubessubnanofluidic

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Area of Science:

  • Nanotechnology
  • Materials Science
  • Biophysics

Background:

  • Biological ion channels enable highly selective sub-1-nanometer ion transport.
  • Artificial subnanopores and subnanochannels are inspired by biological systems for applications in separation, energy conversion, and biosensing.

Purpose of the Study:

  • To review advanced fabrication and functionalization methods for artificial subnanofluidic systems.
  • To discuss the potential applications and future directions in subnanofluidics.

Main Methods:

  • Summarizes top-down fabrication techniques (e.g., electron beam etching, ion irradiation).
  • Details bottom-up approaches using microporous materials, polymers, lipid bilayers, and 2D materials.
  • Classifies functionalization methods including direct synthesis, covalent modification, and molecule filling.

Main Results:

  • Advanced methods allow precise control over subnanochannel structure, size, and functionality.
  • Subnanofluidic devices demonstrate significant potential for various applications.
  • Progress in fabrication and functionalization is enabling new possibilities in nano-device engineering.

Conclusions:

  • Subnanofluidics offers promising avenues for high-performance separation, energy conversion, and biosensing.
  • Continued research in fabrication and functionalization will drive innovation in the field.
  • Addressing current challenges will unlock the full potential of subnanofluidic technologies.