https://doi.org/10.1140/epjb/s10051-024-00770-9
Regular Article
Stimulus-dependent spiking and bursting behavior in memsensor circuits: experiment and wave digital modeling
1
Chair of Digital Communication Systems, Ruhr-Universität Bochum, Universitätsstraße 150, 44801, Bochum, NRW, Germany
2
Chair for Multicomponent Materials, Kiel University, Kaiserstraße 2, 24143, Kiel, Germany
3
Chair for Functional Nanomaterials, Kiel University, Kaiserstraße 2, 24143, Kiel, Germany
4
Kiel Nano, Surface and Interface Science KiNSIS, Kiel University, Christian-Albrechts-Platz 4, 24118, Kiel, Germany
5
Leibniz Institute for Plasma Science and Technology, Felix-Hausdorff-Straße 2, 17489, Greifswald, Germany
Received:
31
May
2024
Accepted:
14
August
2024
Published online:
17
September
2024
Biological information processing pathways in neuron assemblies rely on spike activity, encoding information in the time domain, and operating the highly parallel network at an outstanding robustness and efficiency. One particularly important aspect is the distributed, local pre-processing effectively converting stimulus-induced signals to action potentials, temporally encoding analog information. The field of brain-inspired electronics strives to adapt concepts of information processing in neural networks, e.g., stimulus detection and processing being intertwined. As such, stimulus-modulated resistive switching in memristive devices attracts an increasing attention. This work reports on a three-component memsensor circuit, featuring a UV-sensor, a memristive device with diffusive switching characteristics and a capacitor. Upon application of a DC bias, complex, stimulus-dependent spiking and brain-inspired bursting can be observed, as experimentally showcased using combination of a microstructured, tetrapodal ZnO sensor and a Au/SiOxNy/Ag cross-point memristive device. The experimental findings are corroborated by a wave digital model, which successfully replicates both types of behavior and outlines the relation of temporal variation of switching thresholds to the occurrence of bursting activity.
© The Author(s) 2024
Open Access This article is licensed under a Creative Commons Attribution 4.0 International License, which permits use, sharing, adaptation, distribution and reproduction in any medium or format, as long as you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons licence, and indicate if changes were made. The images or other third party material in this article are included in the article’s Creative Commons licence, unless indicated otherwise in a credit line to the material. If material is not included in the article’s Creative Commons licence and your intended use is not permitted by statutory regulation or exceeds the permitted use, you will need to obtain permission directly from the copyright holder. To view a copy of this licence, visit http://creativecommons.org/licenses/by/4.0/.
