Bioinspired bio-voltage memristors
Bioinspired bio-voltage memristors
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DOI：
10.1038/s41467-020-15759-y
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发表时间：
2020-04-20
影响因子：
16.6
通讯作者：
Yao, Jun
中科院分区：
文献类型：
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作者：
Fu, Tianda;Liu, Xiaomeng;Yao, Jun
忆阻器件是模拟生物计算的有希望的候选者。然而，先前描述的装置中的典型切换电压（0.2- 2 V）比生物对应物中的振幅高得多。在这里，我们展示了一种类型的扩散忆阻器，从细菌Gesterium sulfurreducens收获的蛋白质纳米线制成，其功能在40- 100 mV的生物电压。在生物电压下的忆阻功能是可能的，因为蛋白质纳米线催化金属化。由这些忆阻器构建的人工神经元不仅在生物动作电位（例如，100 mV，1 ms），但也表现出接近生物神经元的时间整合。还展示了使用忆阻器直接处理生物传感信号的潜力。设计能够在生物电压下直接处理信号的节能系统仍然是一个挑战。在这里，作者提出了一种基于蛋白质纳米线电介质的生物相容性忆阻器设备，从细菌Geobactor sulfurreducens中收获，在生物电压下工作。
Memristive devices are promising candidates to emulate biological computing. However, the typical switching voltages (0.2-2V) 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 40-100mV. 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., 100mV, 1ms) 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.