The 3ω technique for measuring dynamic specific heat and thermal conductivity of a liquid or solid

Review of Scientific Instruments

Volumn 67, Issue 1, 1996, Pages 29-35

  Moon, I K ^a   Jeong, Y H ^a   Kwun, S I ^b  

^a Pohang University of Science and Technology (POSTECH)   (South Korea)

^b Seoul National University   (South Korea)

Author keywords

[No Author keywords available]

Indexed keywords

MEASUREMENT TECHNIQUES; SPECIFIC HEAT; THERMAL CONDUCTIVITY;

EID: 0029673737     PISSN: 00346748     EISSN: None     Source Type: Journal    
DOI: 10.1063/1.1146545     Document Type: Article

References (20)

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13. The angular frequency 2ω is due to the fact that a current at ωthrough the heater produces Joule heating at 2ω. We take exp(i2ωt), unlike Ref. 5, as a time-varying factor following Ref, 11.
14. H. S. Carslaw and J. C. Jaeger, Conduction of Heat in Solids (Clarendon, Oxford, 1959), p. 193.
15. G. Arfken, Mathematical Methods for Physicists (Academic, Orlando, 1985), p. 488.
16. This is, of course, a crude approximation neglecting the heat transfer between the two media. In an experimental situation dealing with a liquid, however, this approximation is not as bad as it may appear. For example, the thermal decay lengths of substrate glass and potassium-calcium nitrate liquid in the last example of Sec. IV differ by only 20%.
17. There also exists, due to the dc component of power, a constant shift of the sample temperature with respect to the bath temperature, but it can be easily calibrated away.
18. D. J. Bae, K. B. Lee, Y. H. Jeong, S. M. Lee, and S. I. Kwun, J. Kor. Phys. Soc. 26, 137 (1993); S. M. Lee, S. I. Lim, S. I. Kwun, and Y. H. Jeong, Solid State Commun. 88, 361 (1993).
19. D. J. Bae, K. B. Lee, Y. H. Jeong, S. M. Lee, and S. I. Kwun, J. Kor. Phys. Soc. 26, 137 (1993); S. M. Lee, S. I. Lim, S. I. Kwun, and Y. H. Jeong, Solid State Commun. 88, 361 (1993).
20. W. Reese, Phys. Rev. 182, 646 (1969).