Simultaneous in-situ measurement of oxygen defect concentration and thermal conductivity of metal oxide

• Project/Area Number: 15K13888
• Research Category: Grant-in-Aid for Challenging Exploratory Research
• Allocation Type: Multi-year Fund
• Research Field: Thermal engineering
• Research Institution: Kyushu University
• Principal Investigator: KOHNO Masamichi 九州大学, 工学研究院, 教授 (50311634)
• Project Period (FY): 2015-04-01 – 2017-03-31
• Project Status: Completed (Fiscal Year 2016)
• Budget Amount: ¥3,900,000 (Direct Cost: ¥3,000,000、Indirect Cost: ¥900,000); Fiscal Year 2016: ¥1,690,000 (Direct Cost: ¥1,300,000、Indirect Cost: ¥390,000); Fiscal Year 2015: ¥2,210,000 (Direct Cost: ¥1,700,000、Indirect Cost: ¥510,000)
• Keywords: 金属薄膜 / サーモリフレクタンス / 熱伝導率 / 薄膜 / 金属酸化物 / 酸素欠陥

Outline of Final Research Achievements

To improve an analytical model of thermoreflectance method, the cross-plane thermal transport, generation, and propagation of coherent acoustic-phonon wave in thin Pt film-glass substrate have been comprehensively studied by applying the picosecond laser pump-probe method with different configurations. Significantly different time-dependent reflectance signals have been obtained in different configurations and an effect superposition model is proposed to account for cross plane thermal transport inducing ipsi- and contralateral temperature change in thin Pt film, propagation of coherent acoustic-phonon wave in thin Pt film and in glass substrate. The corresponding theoretical predictions match well with the experimental data. In addition, a metal oxide thin film was prepared by PLD method (Pulsed Laser Deposition), and its thermal conductivity was measured. Furthermore, the effects of high temperature atmosphere (600 degree celsius) on a molybdenum thin film were examined.

Research Products

• [Int'l Joint Research] 清華大学(中国)
• [Journal Article] Long delay time study of thermal transport and thermal stress in thin Pt film-glass substrate system by time-domain thermoreflectance measurements (2017)
  • Author(s): Shen Yan, Cheng Dong, Tingting Miao, Wei Wang, Weigang Ma, Xing Zhang, Masamichi Kohno, Yasuyuki Takata
  • Journal Title: Applied Thermal Engineering Volume: 111 Pages: 1433-1440
  • DOI: 10.1016/j.applthermaleng.2016.08.110
  • Peer Reviewed / Int'l Joint Research
• [Journal Article] The effects of the surface roughness on the dynamic behavior of the successive micrometric droplets impacting onto inclined hot surfaces (2017)
  • Author(s): Deendarlianto, Y. Takata, M. Kohno, S. Hidaka, T. Wakui, A. I. Majid, H. Y. KuIndarto and A. Widyaparaga
  • Journal Title: International Journal of Heat and Mass Transfer Volume: 101 Pages: 1217-1226
  • DOI: 10.1016/j.ijheatmasstransfer.2016.05.132
  • Peer Reviewed / Int'l Joint Research
• [Journal Article] Thermal transport and thermal stress in a molybdenum film-glass substrate system (2016)
  • Author(s): Thermal transport and thermal stress in a molybdenum film-glass substrate system”, Miao, T., Ma, W., Yan, S., Zhang, X., Kohno, M., Takata, Y. and Ikoma
  • Journal Title: Journal of Vacuum Science and Technology B Volume: 34 Issue: 2 Pages: 021801-021801
  • DOI: 10.1116/1.4941308
  • Peer Reviewed / Open Access / Int'l Joint Research
• [Journal Article] Comprehensive study of thermal transport and coherent acoustic-phonon wave propagation in thin metal film - Substrate by applying picosecond laser pump - Probe method (2015)
  • Author(s): Ma, W., Miao, T., Zhang, X., Kohno, M. and Takata
  • Journal Title: Journal of Physical Chemistry C Volume: 119 Issue: 9 Pages: 5152-5159
  • DOI: 10.1021/jp512735k
  • Peer Reviewed / Open Access / Int'l Joint Research
• [Presentation] Thermal Conductivity Reduction of Bulk Silicon by HPT Process (2017)
  • Author(s): Masamichi Kohno
  • Organizer: Asian Conference on Thermal Sciences 2017
  • Place of Presentation: Jeju
  • Year and Date: 2017-03-26
  • Int'l Joint Research
• [Presentation] Effect of Carbon Nano Filler Dimensionality on the Melting of Phase Change Nanocomposites in Vertical Shell-tube Thermal Energy Storage Unit (2017)
  • Author(s): Sivasankaran Harish
  • Organizer: Asian Conference on Thermal Sciences 2017
  • Place of Presentation: Jeju
  • Int'l Joint Research
• [Presentation] Measurement of thermal conductivity of HPT-processed bulk silicon (2016)
  • Author(s): Shuichi Kawawaki
  • Organizer: International Symposium on Micro-Nano Science and Technology 2016
  • Place of Presentation: 東京
  • Year and Date: 2016-12-16
  • Int'l Joint Research
• [Presentation] カーボンナノフィラーの複合化による相変化材料の熱伝導率向上 (2016)
  • Author(s): 河野正道
  • Organizer: 日本熱物性シンポジウム
  • Place of Presentation: 岡山
  • Year and Date: 2016-11-28
• [Presentation] Enhanced Heat Transport and Phase Change Behavior of Nanocomposites for Thermal Energy Storage Application (2016)
  • Author(s): Masamichi Kohno
  • Organizer: The Thirteenth International Conference on Flow Dynamics
  • Place of Presentation: 仙台
  • Year and Date: 2016-10-10
  • Int'l Joint Research / Invited
• [Presentation] Manipulating Phonon Heat Conduction by High Pressure Torsion (2015)
  • Author(s): Masamichi Kohno
  • Organizer: Second ThermaPOWER Mini-Symposium
  • Place of Presentation: Edinburgh, UK
  • Year and Date: 2015-09-08
  • Int'l Joint Research / Invited
• [Presentation] Weigang Ma, Tingting Miao, Xing Zhang, Masamichi Kohno and Yasuyuki Takata (2015)
  • Author(s): Study on the Thermal Transport and Phonon Attenuation of Metallic Nanofilms/Glass Substrate by Applying Picosecond Laser Transient Thermoreflectance Method
  • Organizer: NINETEENTH SYMPOSIUM ON THERMOPHYSICAL PROPERTIES
  • Place of Presentation: Boulder, CO, USA
  • Year and Date: 2015-06-21
  • Int'l Joint Research
• [Presentation] Nano Engineering Thermal Transport in Semiconductors by High-Pressure Torsion (2015)
  • Author(s): Mitsuru Tabara, Sivasankaran Harish, Yoshifumi Ikoma, Zenji Horita, Yasuyuki Takata, David Cahill and Masamichi Kohno
  • Organizer: NINETEENTH SYMPOSIUM ON THERMOPHYSICAL PROPERTIES
  • Place of Presentation: Boulder, CO, USA
  • Year and Date: 2015-06-21
  • Int'l Joint Research