| Original Articles |
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Experimental Studies on Thermal and Electrical Properties of Platinum Nanofilms |
| ZHANG Xing1,2;ZHANG Qing-Guang1;CAO Bing-Yang1;FUJII Motoo2;TAKAHASHI Koji3;IKUTA Tatsuya3 |
| 1Key Laboratory for Thermal Science and Power Engineering of Ministry of Education, Tsinghua University, Beijing 100084
2Institute for Materials Chemistry and Engineering, Kyushu University, Kasuga 816-8580, Japan
3Graduate School of Engineering, Kyushu University, Fukuoka 812-8581, Japan |
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| Cite this article: |
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ZHANG Xing, ZHANG Qing-Guang, CAO Bing-Yang et al 2006 Chin. Phys. Lett. 23 936-938 |
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Abstract We experimentally studied the in-plane thermal and electrical properties of a suspended platinum nanofilm in thickness of 15nm. The measured results show that the in-plane thermal conductivity, the electrical conductivity and the resistance-temperature coefficient of the studied nanofilm are much less than those of the bulk material, while the Lorenz number is greater than the bulk value. Comparing with the results reported previously for the platinum nanofilm in thickness of 28nm, we further find that the in-plane thermal conductivity, the electrical conductivity and the resistance-temperature coefficient decrease with the decreasing thickness of the nanofilm, while the Lorenz number increases with the decreasing thickness of the nanofilm. These results indicate that strong size effects exist on the in-plane thermal and electrical properties of platinum nanofilms.
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68.60.Dv
85.85.+j
44.10.+i
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Published: 01 April 2006
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| PACS: |
68.60.Dv
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(Thermal stability; thermal effects)
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85.85.+j
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(Micro- and nano-electromechanical systems (MEMS/NEMS) and devices)
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44.10.+i
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(Heat conduction)
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