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Evolving conductive polymer neural networks on wetware
| Title: | Evolving conductive polymer neural networks on wetware |
| Authors: | Akai-Kasaya, Megumi Browse this author →KAKEN DB | | Hagiwara, Naruki Browse this author | | Hikita, Wataru Browse this author | | Okada, Masaru Browse this author | | Sugito, Yasumasa Browse this author | | Kuwahara, Yuji Browse this author →KAKEN DB | | Asai, Tetsuya Browse this author →KAKEN DB |
| Keywords: | neural network | | polymer wire | | machine learning | | PEDOT | | PSS |
| Issue Date: | 1-Jun-2020 |
| Publisher: | IOP Publishing |
| Journal Title: | Japanese Journal of Applied Physics (JJAP) |
| Volume: | 59 |
| Issue: | 6 |
| Start Page: | 060601 |
| Publisher DOI: | 10.35848/1347-4065/ab8e06 |
| Abstract: | Neural networks in the brain are structured in three-dimensional (3D) space, and the networks evolve through development and learning, whereas two-dimensional (2D) crossbars have essentially been optimized for a fully connected neural network, which results in a significant increase in unused memristors. Here, we present a prototype of molecular neural networks on wetware consisting of a space-free synaptic medium immersed in monomer solution. In the medium, conductive polymer wires are grown between multiple electrodes through learning only when necessary, i.e. no polymer wire is pre-placed, unlike present 2D crossbar devices. Through experiments, we found the necessary growth conditions for synaptic polymer wires. We first demonstrated the learning of simple Boolean functions and then data-encoding tasks by using our system comprising the synaptic media and their external controllers. These results are valuable for expanding the concept of space-free synapse development, i.e. extending our 2D synaptic media to 3D is possible in principle. |
| Rights: | ©2020 The Japan Society of Applied Physics |
| Type: | article (author version) |
| URI: | http://hdl.handle.net/2115/81643 |
| Appears in Collections: | 情報科学院・情報科学研究院 (Graduate School of Information Science and Technology / Faculty of Information Science and Technology) > 雑誌発表論文等 (Peer-reviewed Journal Articles, etc)
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Submitter: 赤井 恵
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