Thermal Effects

This lecture covers the fundamental concepts of thermal effects, including heat transfer by conduction, thermal conductivity in thin films, nanowires, carbon nanotubes, and graphene. It also discusses heat transfer by convection, stationary temperature distribution in suspended microstructures, and temperature profiles with conduction and convection losses. The reduction of phonon thermal conductivity in thin films and nanowires due to boundary scattering and confinement effects is explored, along with the impact of scaling down systems on convection. Examples and numerical illustrations are provided to demonstrate the temperature profiles and thermal gradients in different materials and structures.