We have examined the stability of double wall carbon nanotubes under hydrostatic pressures up to 10 GPa. The tangential optical phonon mode observed by inelastic light scattering is sensitive to the in-plane stress and splits into a contribution associated with the external and internal tube. While the pressure coefficient from the external tube is the same as in single wall carbon nanotubes, t...

Shell-and-tube latent heat thermal energy storage units employ phase change materials to store and release at a nearly constant temperature, deliver high effectiveness of transfer, as well charging/discharging power. Even though many studies have investigated the material formulation, transfer through simulation, experimental studies, there is limited research dedicated unit design methodology....