Temperature-dependent specific heat of suspended platinum nanofilms at 80–380 K
| Autor: | Tatsuya Ikuta, Xing Zhang, Qin Yi Li, Koji Takahashi, Takashi Nishiyama, Masahiro Narasaki |
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| Rok vydání: | 2016 |
| Předmět: |
010302 applied physics
Work (thermodynamics) Materials science Specific heat General Physics and Astronomy chemistry.chemical_element Nanotechnology 02 engineering and technology 021001 nanoscience & nanotechnology 01 natural sciences suspended platinum nanofilms Characterization (materials science) Metal chemistry size effect visual_art 0103 physical sciences Thermophysics Thermal 3ω method visual_art.visual_art_medium specific heat 0210 nano-technology Platinum Nanoscopic scale |
| Zdroj: | Chinese Physics B. 25:114401 |
| ISSN: | 1674-1056 |
| Popis: | 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^ Pa using the 3w 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. |
| Databáze: | OpenAIRE |
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