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Updated: Jun 16, 2025
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A Method for Growing Bio-memristors from Slime Mold
Published on: November 2, 2017
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Residual Stresses and Micro-voids Propel Metal Diffusion for Filament-Based Memristors.
Joel Y Y Loh1,2, Jason Yuan1, Samuel Moor-Smith3
1Department of Electrical and Computer Engineering, University of Toronto, Toronto, Ontario, M5S 3G4, Canada.
Summary
Introducing nitrogen during silver deposition enables low-voltage memristor switching. These novel devices exhibit unique neuromorphic behaviors, mimicking biological neurons for advanced computing applications.
Area of Science:
- Materials Science
- Nanotechnology
- Neuroscience
Background:
- Metal filamentation memristors typically need high voltages due to atomic vacancy movement.
- Achieving low-voltage switching is crucial for energy-efficient neuromorphic computing.
Purpose of the Study:
- To develop low-voltage memristor devices using a novel material mechanism.
- To explore unique neuromorphic behaviors in these engineered memristors.
Main Methods:
- Plasma sputtering of silver with introduced non-reactive nitrogen gas.
- Fabrication of silver/metal nitride memristive devices.
- Characterization of electrical switching and neuromorphic properties.
Main Results:
- Achieved low threshold switching (<60 mV) by incorporating nitrogen during silver deposition.
- Observed unique neuromorphic behaviors, including multi-peak synaptic weight changes.
- Demonstrated lateral filament growth and linked properties to nitrogen-argon pressure.
Conclusions:
- Nitrogen incorporation primes silver for low-voltage, high-performance memristors.
- These devices show potential for artificial neuron development and advanced neuromorphic computing.
- Facile gas incorporation offers a pathway to versatile memristor materials.
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