Creation of arithmetic hardware device that can be optimally driven under atmospheric conditions using nanomaterials

2023 Fiscal Year Final Research Report

• Project/Area Number: 21K14527
• Research Category: Grant-in-Aid for Early-Career Scientists
• Allocation Type: Multi-year Fund
• Review Section: Basic Section 29010:Applied physical properties-related
• Research Institution: Kyushu Institute of Technology
• Principal Investigator: Yuki Usmai 九州工業大学, 大学院生命体工学研究科, 助教 (60878437)
• Project Period (FY): 2021-04-01 – 2024-03-31
• Keywords: リザバー演算 / 導電性ポリマー / マテリアルリザバー / イオン伝導 / 音声分類

Outline of Final Research Achievements

In this study, with the aim of elucidating the origin of activation of charge transfer in nanomaterials in atmospheric environments and extracting their function as arithmetic devices through electrochemical control, we called for the fabrication of devices in which reservoir operations are driven by proton injection by controlling the humidity environment of polyaniline and evaluated their performance. The electrical properties changed drastically with increasing humidity, and I-V characteristics such as strong nonlinear and negative differential resistance peaks originating from redox were obtained, indicating that the device is ionic conductive in a humid environment and responds sensitively to humidity changes. The results of simulated experiments of reservoir operation showed that the waveform generation could be performed with 90% accuracy, and 10 types of numeric voices (0-9) were successfully classified with about 70% accuracy.

Free Research Field

応用物性

Academic Significance and Societal Importance of the Research Achievements

本研究の意義は、有機分子ネットワークの電気化学反応を用いて大気化で駆動させ情報処理を実現したことである。生体脳においても、神経回路で有機分子のネットワークが形成されており、電気化学反応を用いて信号伝達が行われている。そのため本研究成果によって、低消費電力かつ外部刺激を駆動力として機能する脳を真に模倣した次世代デバイスの創製およびAIシステムへの実装が期待される。