Ballistic heat conduction in one-dimensionalized graphene-cups

一维石墨烯杯中的弹道热传导

• 批准号: 23656153
• 负责人: TAKAHASHI Koji
• 金额: $ 2.58万
• 依托单位: Kyushu University
• 依托单位国家: 日本
• 项目类别: Grant-in-Aid for Challenging Exploratory Research
• 财政年份: 2011
• 资助国家: 日本
• 起止时间: 2011 至 2012
• 项目状态: 已结题
• 来源: https://kaken.nii.ac.jp/grant/KAKENHI-PROJECT-23656153/
• 关键词: ナノ材料; 熱伝導率; フォノン; １次元材料; アモルファスカーボン

We treat the ballistic heat conduction of grapheme-based nano material. Graphene nanoribbon (GNR) and cup-stacked carbon nanofiber are investigated using nonequilibrium molecular dynamics simulation. For zigzag GNRs, the narrowest ribbon shows the highest thermal conductivity and its value decreases with width possiblely due to the ballistic phonon transport. Several experimental techniques are simultaneously developed. Ozone gas is found useful to etch away the amorphous carbon deposited on the nano materials, which degrades the 1D characteristic. Ionic liquid is found unable to work as heat sink due to its wettability. A technique of nanoscale temperature measurement is newly developed using an individual carbon nanotube (CNT) on a platinum hot-film. Several nano materials are investigated by using this thermal probe sensor . Though we have not yet found a thermal conductivity higher than that of single-walled CNT, experimental technique is now prepared for exploring the ballistic heat transfer in nano materials.

我们处理基于石墨烯的纳米材料的弹道热传导。使用非平衡分子动力学模拟研究石墨烯纳米带（GNR）和杯状碳纳米纤维。对于锯齿形 GNR，最窄的带材显示出最高的热导率，并且由于弹道声子输运，其值可能随宽度而减小。同时开发了几种实验技术。臭氧气体被发现有助于蚀刻掉沉积在纳米材料上的无定形碳，这会降低一维特性。人们发现离子液体由于其润湿性而无法用作散热器。新开发的纳米级温度测量技术使用铂热膜上的单个碳纳米管（CNT）。使用这种热探针传感器研究了几种纳米材料。虽然我们还没有发现比单壁碳纳米管更高的导热率，但现在已经准备好实验技术来探索纳米材料中的弹道传热。

项目成果

Thermal Boundary Resistance of an Individual ...

个体的热边界电阻...

• 发表时间: 2011
• 作者: 長山 暁子;他;中辻竜也，河原源太，清水雅樹，M. Uhlmann，A. Pinelli;Koji Takahashi
• 通讯作者: Koji Takahashi

EDGE EFFECT ON PHONON TRANSPORT IN SUSPENDED AND SUPPORTED GRAPHENE NANORIBBONS

悬浮和支撑石墨烯纳米带中声子输运的边缘效应

• DOI: 10.1615/computthermalscien.2012004393
• 发表时间: 2012
• 期刊: Computational Thermal Sciences
• 影响因子: 1.5
• 作者: M. Kimura;T. Matsuzaki;K. Takahashi
• 通讯作者: K. Takahashi

Carbon Nanotube Temperature Profiler using Platinum Hot Film

使用铂热膜的碳纳米管温度分析仪

• 发表时间: 2012
• 作者: J. Amano;J. Hirotani;T. Ikuta;T. Nishiyama;K. Takahashi
• 通讯作者: K. Takahashi

Experimental study on the influences of grain boundary scattering on the charge and heat transport in gold and platinum nanofilms

晶界散射对金铂纳米薄膜电荷和热传输影响的实验研究

• DOI: 10.1007/s00231-011-0825-5
• 发表时间: 2011-08-01
• 期刊: HEAT AND MASS TRANSFER
• 影响因子: 2.2
• 作者: Wang, Hai-Dong;Liu, Jin-Hui;Takahashi, Koji
• 通讯作者: Takahashi, Koji

Non-Fourier heat conduction study for steady states in metallic nanofilms

金属纳米膜稳态的非傅里叶热传导研究

• DOI: 10.1007/s11434-012-5288-7
• 发表时间: 2012-08
• 期刊: Chinese Science Bulletin
• 作者: H.D. Wang;J.H. Liu;Z. Y. Guo;K. Takahashi
• 通讯作者: K. Takahashi