Bioinspired bio-voltage memristors

Memristive devices are promising candidates to emulate biological computing. However, the typical switching voltages (0.2-2 V) in previously described devices are much higher than the amplitude in biological counterparts. Here we demonstrate a type of diffusive memristor, fabricated from the protein...

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Bibliographic Details
Published in:Nature communications 2020-04, Vol.11 (1), p.1861-10, Article 1861
Main Authors: Fu, Tianda, Liu, Xiaomeng, Gao, Hongyan, Ward, Joy E., Liu, Xiaorong, Yin, Bing, Wang, Zhongrui, Zhuo, Ye, Walker, David J. F., Joshua Yang, J., Chen, Jianhan, Lovley, Derek R., Yao, Jun
Format: Article
Language:English
Subjects:
639/166/987
639/301/1005/1007
639/925/927/1007
Action Potentials
Bacteria
Biological activity
Biological computing
Biosensing Techniques
Biosensors
Electricity
Electronics - instrumentation
Energy efficiency
Equipment Design
Geobacter - metabolism
Humanities and Social Sciences
Humans
Memory devices
Memristors
Metallizing
Molecular Dynamics Simulation
multidisciplinary
Nanotechnology
Nanotechnology - instrumentation
Nanowires
Nanowires - chemistry
Nanowires - ultrastructure
Neural Networks, Computer
Neurons
Proteins
Science
Science (multidisciplinary)
Signal processing
Synapses - metabolism
Wearable Electronic Devices
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Summary:Memristive devices are promising candidates to emulate biological computing. However, the typical switching voltages (0.2-2 V) in previously described devices are much higher than the amplitude in biological counterparts. Here we demonstrate a type of diffusive memristor, fabricated from the protein nanowires harvested from the bacterium Geobacter sulfurreducens , that functions at the biological voltages of 40-100 mV. Memristive function at biological voltages is possible because the protein nanowires catalyze metallization. Artificial neurons built from these memristors not only function at biological action potentials (e.g., 100 mV, 1 ms) but also exhibit temporal integration close to that in biological neurons. The potential of using the memristor to directly process biosensing signals is also demonstrated. Designing energy efficient systems capable to directly process signals at biological voltages remains a challenge. Here, the authors propose a bio-compatible memristor device based on protein-nanowire dielectric, harvested from the bacterium Geobactor sulfurreducens, working at biological voltages.
ISSN:2041-1723
2041-1723
DOI:10.1038/s41467-020-15759-y