中国物理B ›› 2016, Vol. 25 ›› Issue (11): 114401-114401.doi: 10.1088/1674-1056/25/11/114401

• ELECTROMAGNETISM, OPTICS, ACOUSTICS, HEAT TRANSFER, CLASSICAL MECHANICS, AND FLUID DYNAMICS • 上一篇    下一篇

Temperature-dependent specific heat of suspended platinum nanofilms at 80-380 K

Qin-Yi Li(李秦宜), Masahiro Narasaki(楢崎将弘), Koji Takahashi(高桥厚史), Tatsuya Ikuta(生田竜也), Takashi Nishiyama(西山贵史), Xing Zhang(张兴)   

  1. 1 Key Laboratory for Thermal Science and Power Engineering of Ministry of Education, Department of Engineering Mechanics, Tsinghua University, Beijing 100084, China;
    2 Department of Aeronautics and Astronautics, Kyushu University, Fukuoka 819-0395, Japan;
    3 International Institute for Carbon Neutral Energy Research(WPI-I2 CNER), Kyushu University, Japan
  • 收稿日期:2016-04-27 修回日期:2016-07-11 出版日期:2016-11-05 发布日期:2016-11-05
  • 通讯作者: Xing Zhang E-mail:x-zhang@tsinghua.edu.cn
  • 基金资助:

    Project supported by the National Natural Science Foundation of China (Grant Nos. 51327001 and 51636002), and partially supported by CREST, JST, and JSPS KAKENHI (Grant Nos. 16H04280, 26289047, 16K14174, and 16K06126).

Temperature-dependent specific heat of suspended platinum nanofilms at 80-380 K

Qin-Yi Li(李秦宜)1,2, Masahiro Narasaki(楢崎将弘)2, Koji Takahashi(高桥厚史)2,3, Tatsuya Ikuta(生田竜也)2,3, Takashi Nishiyama(西山贵史)2,3, Xing Zhang(张兴)1   

  1. 1 Key Laboratory for Thermal Science and Power Engineering of Ministry of Education, Department of Engineering Mechanics, Tsinghua University, Beijing 100084, China;
    2 Department of Aeronautics and Astronautics, Kyushu University, Fukuoka 819-0395, Japan;
    3 International Institute for Carbon Neutral Energy Research(WPI-I2 CNER), Kyushu University, Japan
  • Received:2016-04-27 Revised:2016-07-11 Online:2016-11-05 Published:2016-11-05
  • Contact: Xing Zhang E-mail:x-zhang@tsinghua.edu.cn
  • Supported by:

    Project supported by the National Natural Science Foundation of China (Grant Nos. 51327001 and 51636002), and partially supported by CREST, JST, and JSPS KAKENHI (Grant Nos. 16H04280, 26289047, 16K14174, and 16K06126).

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摘要：

Metallic nanofilms are important components of nanoscale electronic circuits and nanoscale sensors. The accurate characterization of the thermophysical properties of nanofilms is very important for nanoscience and nanotechnology. Currently, there is very little specific heat data for metallic nanofilms, and the existing measurements indicate distinct differences according to the nanofilm size. The present work reports the specific heats of 40-nm-thick suspended platinum nanofilms at 80-380 K and ~5×10-4 Pa using the 3ω method. Over 80-380 K, the specific heats of the Pt nanofilms range from 166-304 J/(kg·K), which are 1.65-2.60 times the bulk values, indicating significant size effects. These results are useful for both scientific research in nanoscale thermophysics and evaluating the transient thermal response of nanoscale devices.

关键词: suspended platinum nanofilms, specific heat, size effect, 3&omega, method

Abstract:

Metallic nanofilms are important components of nanoscale electronic circuits and nanoscale sensors. The accurate characterization of the thermophysical properties of nanofilms is very important for nanoscience and nanotechnology. Currently, there is very little specific heat data for metallic nanofilms, and the existing measurements indicate distinct differences according to the nanofilm size. The present work reports the specific heats of 40-nm-thick suspended platinum nanofilms at 80-380 K and ~5×10-4 Pa using the 3ω method. Over 80-380 K, the specific heats of the Pt nanofilms range from 166-304 J/(kg·K), which are 1.65-2.60 times the bulk values, indicating significant size effects. These results are useful for both scientific research in nanoscale thermophysics and evaluating the transient thermal response of nanoscale devices.

Key words: suspended platinum nanofilms, specific heat, size effect, 3&omega, method

中图分类号:  (Physical properties of thin films, nonelectronic)

  • 68.60.-p
65.40.Ba (Heat capacity) 65.80.-g (Thermal properties of small particles, nanocrystals, nanotubes, and other related systems) 65.40.-b (Thermal properties of crystalline solids)