Table 1 Summary of the characteristic measuring parameters

I₀(μA)

V₀(mV)

$\frac{\mathbf{\text{ln}}\left(\frac{{\mathit{\omega }}_{\mathbf{2}}}{{\mathit{\omega }}_{\mathbf{1}}}\right)}{{\mathit{V}}_{\mathbf{3}\mathit{\omega }\mathbf{1}}\mathbf{-}{\mathit{V}}_{\mathbf{3}\mathit{\omega }\mathbf{2}}}$

κ(W/m·K)

I₀(μA)

V₀(mV)

$\frac{\mathbf{\text{ln}}\left(\frac{{\mathit{\omega }}_{\mathbf{2}}}{{\mathit{\omega }}_{\mathbf{1}}}\right)}{{\mathit{V}}_{\mathbf{3}\mathit{\omega }\mathbf{1}}\mathbf{-}{\mathit{V}}_{\mathbf{3}\mathit{\omega }\mathbf{2}}}$

κ(W/m·K)