| ELECTROMAGNETISM, OPTICS, ACOUSTICS, HEAT TRANSFER, CLASSICAL MECHANICS, AND FLUID DYNAMICS |
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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 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 |
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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.
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Received: 27 April 2016
Revised: 11 July 2016
Accepted manuscript online:
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PACS:
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68.60.-p
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(Physical properties of thin films, nonelectronic)
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65.40.Ba
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(Heat capacity)
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65.80.-g
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(Thermal properties of small particles, nanocrystals, nanotubes, and other related systems)
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65.40.-b
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(Thermal properties of crystalline solids)
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| Fund: 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). |
Corresponding Authors:
Xing Zhang
E-mail: x-zhang@tsinghua.edu.cn
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Cite this article:
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) Temperature-dependent specific heat of suspended platinum nanofilms at 80-380 K 2016 Chin. Phys. B 25 114401
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