Theoretical and Experimental Studies on Non-Fourier Heat Conduction Based on Thermomass Theory
This book mainly focuses on the theoretical and experimental study of non-Fourier heat conduction behavior. A novel thermomass theory is used as the theoretical basis, which provides a general heat conduction equation for the accurate prediction of non-Fourier heat conduction. In order to prove the validity of this thermomass theory, a large current was used to heat the metallic nanofilm at the minimum temperature of 3 K. The measured average temperature of the nanofilm was notably higher than the prediction of Fourier’s heat diffusion equation, while matching well with the general heat conduction equation. This is the first time that steady non-Fourier heat conduction has been observed. Moreover, this book concerns the role of electron-phonon interaction in metallic nanofilms, which involves the breakdown of the Wiedemann-Franz law at low temperatures and interfacial thermal resistance at femtosecond timescales. Readers will find useful information on non-Fourier heat conduction and the latest advances in the study of charge and heat transport in metallic nanofilms.
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average temperature Boltzmann transport equation carbon nanotubes coefficient Copyright 2011 decreases dielectrics diffusion equation direct current electrical conductivity electron scattering electrons and lattices energy equation of thermon experimental data experimental study film sample film thickness Fourier’s law gold nanofilms grain boundary grain boundary scattering Hai-Dong Wang heat conduction equation heat conduction law heat flow choking Heat Transfer heat transport heated by ultra-short increases Koji Takahashi laser heating lattice temperature Lorenz number low temperatures Mass Transfer material properties metallic films non-Fourier heat conduction optical parameter permission from Elsevier phonons Phys plotted with respect polycrystalline probe beam propagation speed pump beam Raman scattering relaxation Reprinted specific heat speed of thermal substrate surface SWCNT temperature wave thermal conductivity thermal wave thermomass theory thermon gas thin films transport in metallic TTR method ultra-short pulsed laser Wang HD wave equation Wiedemann-Franz law Xing Zhang Zeng-Yuan Guo