- Assessing phonon coherence using spectroscopy
As a fundamental physical quantity of thermal phonons, temporal coherence participates in a broad range of thermal and phononic processes, while a clear methodology for the measurement of phonon coherence … Read more - Observation of phonon Poiseuille flow in isotopically purified graphite ribbons
In recent times, the unique collective transport physics of phonon hydrodynamics motivates theoreticians and experimentalists to explore it in micro- and nanoscale and at elevated temperatures. Graphitic materials have been … Read more - Resonant Thermal Transport Driven by Surface Phonon-Polaritons in a Cylindrical Cavity
The axial thermal conductance of a cylindrical cavity supporting the propagation of hybridized guided modes along its interface with SiO22 is quantified and analyzed as a function of its radius and … Read more - Parabolic mirrors collimating and focusing fluxes of thermal phonons
Manipulating heat fluxes at the nanoscale has become increasingly important in modern microelectronics. However, many methods of heat manipulations rely on complex nanofabrication. Here, we propose simple designs for collimation … Read more - Impact of nanopillars on phonon dispersion and thermal conductivity of silicon membranes
The performance of silicon-based thermoelectric energy generators is limited by the high thermal conductivity of silicon. Theoretical works have long proposed reducing the thermal conductivity by resonant phonon modes in … Read more
