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Solution-Processed Flexible Biomemristor Based on Gold-Decorated Chitosan.

Niloufar Raeis-Hosseini1, Junsuk Rho2

  • 1Department of Electronics and Electrical Engineering, Imperial College London, SW7 2BT London, U.K.

ACS Applied Materials & Interfaces
|January 21, 2021
PubMed
Summary

Researchers developed a flexible, transparent, and biocompatible memory device using gold-decorated chitosan. This novel bioReRAM offers reliable performance for future wearable electronics and biodegradable nanoelectronic applications.

Keywords:
bioinspired electronicsflexible memristorgold nanoparticlenatural polymerresistive switching memory

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Area of Science:

  • Materials Science
  • Nanotechnology
  • Biomedical Engineering

Background:

  • Skin-attachable memory devices require flexibility and biocompatibility.
  • Advancements in wearable electronics necessitate novel memory solutions.

Purpose of the Study:

  • To develop a flexible, transparent, and biocompatible resistive switching random access memory (ReRAM).
  • To explore the potential of gold-decorated chitosan for bio-integrated electronics.

Main Methods:

  • Fabrication of a cross-bar structure using silver/gold-chitosan/gold.
  • Characterization of nonvolatile ReRAM properties, including bipolar switching, data retention, and endurance.
  • Investigation of the resistance switching mechanism.

Main Results:

  • The fabricated device demonstrated reliable bipolar memory performance with mechanical flexibility.
  • The gold-chitosan ReRAM exhibited long data retention and hundreds of switching cycles.
  • The switching mechanism was attributed to trap-assisted space-charge-limited conduction and conductive filament formation/annihilation.

Conclusions:

  • The transparent, biocompatible ReRAM based on gold-decorated chitosan is a promising candidate for flexible and biodegradable nanoelectronic devices.
  • This bioReRAM technology supports the development of next-generation wearable electronics.