3 omega method for specific heat and thermal conductivity measurements

Details 3 omega method for specific heat and thermal conductivity measurements 3 omega method for specific heat and thermal conductivity measurements

2002-02-06

arxiv.org/abs/quant-ph/0202038v1

Review Of Scientific Instruments 72, 2996 (2001)

Physics

Quantum Physics

7 pages, 8 figures

Scientific paper

10.1063/1.1378340

We present a 3 omega method for simultaneously measuring the specific heat and thermal conductivity of a rod- or filament-like specimen using a way similar to a four-probe resistance measurement. The specimen in this method needs to be electrically conductive and with a temperature-dependent resistance, for acting both as a heater to create a temperature fluctuation and as a sensor to measure its thermal response. With this method we have successfully measured the specific heat and thermal conductivity of platinum wire specimens at cryogenic temperatures, and measured those thermal quantities of tiny carbon nanotube bundles some of which are only 10^-9 g in mass.

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