Abstract
In this paper, a transient technique is developed to characterize the thermophysical properties of one-dimensional conductive and nonconductive microscale wires. In this technique, the to-be-measured thin wire is suspended between two electrodes. When feeding a step dc to the sample, its temperature will increase and take a certain time to reach the steady state. This temperature evolution is probed by measuring the variation of voltage over the wire, which is directly related to resistance/temperature change. The temperature evolution history of the sample can be used to determine its thermal diffusivity. A 25.4 μm thick platinum wire is used as the reference sample to verify this technique. Sound agreement is obtained between the measured thermal diffusivity and the reference value. Applying this transient electrothermal technique, the thermal diffusivities of single-wall carbon nanotube bundles and polyester fibers are measured.
| Original language | English |
|---|---|
| Article number | 063537 |
| Journal | Journal of Applied Physics |
| Volume | 101 |
| Issue number | 6 |
| DOIs | |
| State | Published - 2007 |
| Externally published | Yes |
Bibliographical note
Funding Information:This work was supported by National Science Foundation (CMS: 0457471), Nebraska Research Initiative, Air Force Office for Scientific Research, and MURI from ONR. SWCNT bundles were provided by Chang Liu and Huiming Cheng from Shenyang National Laboratory for Materials Science, Chinese Academy of Sciences. The authors really appreciate this strong support.
ASJC Scopus subject areas
- General Physics and Astronomy
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