<p>➀ Researchers have explored a novel approach to boost thermal transport across solid interfaces by activating hyperbolic phonon-polariton (HPhP) modes in hexagonal boron nitride (hBN).</p><p>➁ These hybrid light–vibration modes can transfer energy at rates far exceeding conventional phonon–phonon conduction.</p><p>➂ The study shows that hBN can act as a high-performance medium for ultrafast thermal dissipation, with potential applications in high-frequency or high-power devices.</p>