Bioinspired bio-voltage memristors

Tianda Fu, Xiaomeng Liu, Hongyan Gao, Joy E. Ward, Xiaorong Liu, Bing Yin, Zhongrui Wang, Ye Zhuo, David J. F. Walker, J. Joshua Yang, Jianhan Chen, Derek R. Lovley and Jun Yao ()
Additional contact information
Tianda Fu: University of Massachusetts
Xiaomeng Liu: University of Massachusetts
Hongyan Gao: University of Massachusetts
Joy E. Ward: University of Massachusetts
Xiaorong Liu: University of Massachusetts
Bing Yin: University of Massachusetts
Zhongrui Wang: University of Massachusetts
Ye Zhuo: University of Massachusetts
David J. F. Walker: University of Massachusetts
J. Joshua Yang: University of Massachusetts
Jianhan Chen: University of Massachusetts
Derek R. Lovley: University of Massachusetts
Jun Yao: University of Massachusetts

Nature Communications, 2020, vol. 11, issue 1, 1-10

Abstract: 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.

Date: 2020
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DOI: 10.1038/s41467-020-15759-y

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