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Bioinspired bio-voltage memristors.

ABSTRACT: 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.

SUBMITTER: Fu T

PROVIDER: S-EPMC7171104 | biostudies-literature | 2020 Apr

REPOSITORIES: biostudies-literature

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Bioinspired bio-voltage memristors.

Fu Tianda T Liu Xiaomeng X Gao Hongyan H Ward Joy E JE Liu Xiaorong X Yin Bing B Wang Zhongrui Z Zhuo Ye Y Walker David J F DJF Joshua Yang J J Chen Jianhan J Lovley Derek R DR Yao Jun J

Nature communications 20200420 1

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 nan ...[more]

PMID: 32313096

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