Bioinspired bio-voltage memristors.

TitleBioinspired bio-voltage memristors.
Publication TypeJournal Article
Year of Publication2020
AuthorsFu T, Liu X, Gao H, Ward JE, Liu X, Yin B, Wang Z, Zhuo Y, Walker DJF, J Yang J, Chen J, Lovley DR, Yao J
JournalNat Commun
Date Published2020 Apr 20
KeywordsAction Potentials, Biosensing Techniques, Electricity, Electronics, Equipment Design, Geobacter, Humans, Molecular Dynamics Simulation, Nanotechnology, Nanowires, Neural Networks, Computer, Neurons, Synapses, Wearable Electronic Devices

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.

Alternate JournalNat Commun
PubMed ID32313096
PubMed Central IDPMC7171104
Grant ListR01 GM114300 / GM / NIGMS NIH HHS / United States