Why is Thermal Conductivity Different in Nanomaterials?
The thermal conductivity of nanomaterials is often higher or lower than their bulk counterparts due to the scattering of phonons—the primary carriers of heat in non-metallic solids. In nanomaterials, the mean free path of phonons can be comparable to the size of the material, leading to either enhanced or reduced thermal transfer depending on the nature of the boundaries and interfaces within the material.
