Phonon dynamics and thermal transport in designed nanostructures

The recently growing research field called “Nanophononics” deals with the investigation and control of vibrations in solids at the nanoscale. Phonon engineering leads to a controlled modification of phonon dispersion, phonon interactions, and transport [1]. However, engineering and probing phonons and thermal transport at the nanoscale is a non-trivial problem.

In this talk, we discuss how phononic properties and thermal transport can be engineered and measured in nanowires [2] and the challenges and progresses in the measurement of the thermal conductivity of nanostructures [3].

[1] S. Voltz, et al., Eur. Phys. J. B 89, 15 (2016)

[2] A. K. Sivan et al., ACS Appl. Nano Mat. 6(19), 18602-18613 (2023)

[3] G. de Vito et al., Int. J. Heat Mass Transf. 224, 125302 (2024)