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Amyloid-Gold Nanoparticle Hybrids for Biocompatible Memristive Devices.

Aoze Han1, Liwei Zhang2, Miaocheng Zhang1,3

  • 1College of Integrated Circuit Science and Engineering, Nanjing University of Posts and Telecommunications, Nanjing 210023, China.

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|March 11, 2023
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Summary

Biocompatible memristive devices using amyloid-gold nanoparticle hybrids show high performance and mimic synaptic functions. These biomolecular materials pave the way for advanced, eco-friendly electronic devices.

Keywords:
amyloid–gold hybridsboolean logicbrain inspiredion migrationmemristor

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Area of Science:

  • Materials Science
  • Nanotechnology
  • Neuroscience

Background:

  • Biomolecular materials offer sustainable and biocompatible alternatives for electronic devices.
  • Memristive devices are crucial for next-generation computing and neuromorphic applications.
  • Amyloid fibrils and gold nanoparticles present unique properties for hybrid material development.

Purpose of the Study:

  • To investigate biocompatible memristive devices based on amyloid-gold nanoparticle hybrids.
  • To evaluate the electrical performance and switching characteristics of these novel memristors.
  • To explore the potential for mimicking synaptic plasticity and implementing logic functions.

Main Methods:

  • Fabrication of memristive devices using amyloid-gold nanoparticle hybrids.
  • Characterization of electrical performance, including resistance ratio and switching voltage.
  • Investigation of ion migration mechanisms within amyloid fibrils.
  • Simulation of synaptic behaviors (EPSC, PPF, STP-LTP transition) using voltage pulses.
  • Design and simulation of Boolean logic cells based on the memristive devices.

Main Results:

  • Achieved ultrahigh resistance ratio (>10^7) and low switching voltage (<0.8 V) with reliable reproducibility.
  • Demonstrated reversible switching between threshold and resistive switching modes.
  • Identified peptide arrangement in amyloid fibrils as key for Ag+ ion migration.
  • Successfully mimicked excitatory postsynaptic current, paired-pulse facilitation, and plasticity transitions.
  • Designed and simulated functional Boolean logic standard cells.

Conclusions:

  • Amyloid-gold nanoparticle hybrids form highly performant and biocompatible memristive devices.
  • These devices exhibit tunable switching behavior and can emulate biological synaptic functions.
  • The study highlights the potential of biomolecular materials for advanced neuromorphic computing and logic applications.