The demand for sophisticated tools and approaches in heat management and control has
triggered the fast development of fields that include conductive thermal metamaterials …

The description of phonon heat conduction has typically been based on Fourier diffusion
theory. However, over the past three decades, a host of interesting phonon transport …

Phononic crystals (PnCs) control the transport of sound and heat similar to the control of
electric currents by semiconductors and metals or light by photonic crystals. Basic and …

On-chip optical resonators have the promise of revolutionizing numerous fields, including
metrology and sensing; however, their optical losses have always lagged behind those of …

Thermal transport at the nanoscale level is attracting attention not only because of its
physically interesting features such as the peculiar behavior of phonons due to their …

Wave interference modifies phonon velocities and density of states, and in doing so creates
forbidden energy bandgaps for thermal phonons. Materials that exhibit wave interference …

Before replacing fossil fuels, renewable energy options should overcome conversion and
storage challenges. Therefore, it is crucial to develop advanced materials that may enhance …

Metamaterials exploit local resonances to reflect acoustic signals with wavelengths well
above the characteristic size of the material's structure. This has allowed obtaining materials …

Increasing energy demands require new materials, eg, thermoelectrics, for efficient energy
conversion of fossil fuels. However, their low figure of merit (ZT) limits widespread …

Understanding and quantifying the fundamental physical property of coherence of thermal
excitations is a long-standing and general problem in physics. The conventional theory, ie …