Nanoscale heat transport tracked at interface between semiconductor materials
Nature, Published online: 25 June 2025; doi:10.1038/d41586-025-01964-6Phonons are quasiparticles that carry heat, and in electronic chips they can get blocked at interfaces between materials, leading to overheating. An electron-microscopy technique that relies on a phenomenon called inelastic electron scattering has been used to map phonons and temperatures with (sub-)nanometre resolution to characterize heat-transport dynamics across such interfaces.
Nature, Published online: 25 June 2025; doi:10.1038/d41586-025-01964-6Phonons are quasiparticles that carry heat, and in electronic chips they can get blocked at interfaces between materials, leading to overheating. An electron-microscopy technique that relies on a phenomenon called inelastic electron scattering has been used to map phonons and temperatures with (sub-)nanometre resolution to characterize heat-transport dynamics across such interfaces.
