Establishment of active heat transfer control of metallic nanowires by career control techniques

2022 Fiscal Year Final Research Report

• Project/Area Number: 19H02168
• Research Category: Grant-in-Aid for Scientific Research (B)
• Allocation Type: Single-year Grants
• Section: 一般
• Review Section: Basic Section 21050:Electric and electronic materials-related
• Research Institution: Kyoto University (2021-2022); Nagoya University (2019-2020)
• Principal Investigator: Hirotani Jun 京都大学, 工学研究科, 准教授 (80775924)
• Co-Investigator(Kenkyū-buntansha): 劉 麗君 大阪大学, 大学院工学研究科, 助教 (80809195)
• Project Period (FY): 2019-04-01 – 2023-03-31
• Keywords: MXene / サーモリフレクタンス / イオン液体 / 熱伝導

Outline of Final Research Achievements

In order to investigate the modulation of thermal conduction by applying a strong electric field to metallic atomic layer material MXene, it was necessary to obtain monolayer-exfoliated MXene. However, the obtained MXene had Al residues between the MXene layers, which made it difficult to exfoliate by solution dispersion or other methods. Therefore, we established a method to obtain MXene of several microns by using a mechanically mild in-situ etching reaction. To further validate the thermal conductivity modulation, a new experimental system for the frequency-domain thermoreflectance method was established, which enables thermal conductivity measurements for both isotropic and anisotropic materials.

Free Research Field

電子工学

Academic Significance and Societal Importance of the Research Achievements

本研究で開発した単層の原子層材料であるMXeneはバッテリー応用や水素発生用の触媒やセンサ応用など、様々な応用が期待されている材料である。これまで単層剥離が困難であった課題に対して、本研究で得られたMXeneを用いて様々な応用展開が考えられる。さらに、開発した周波数領域サーモリフレクタンス法による熱伝導率評価手法は様々な材料の熱伝導評価が可能であり、電子材料分野や材料科学分野など多方面での共同研究成果の創出が期待できる。