3 papers
cond-mat.mtrl-sci2025
Phonon selection and interference in momentum-resolved electron energy loss spectroscopy
Thomas W. Pfeifer, Harrison A. Walker, Henry T. Aller +5
As momentum-resolved Electron Energy Loss Spectroscopy (q-EELS) becomes more widely used for phonon measurements, better understanding of the intricacies of the acquired signal is…
physics.app-ph2024
Experimental observation of ballistic to diffusive transition in AlN thin films
Md Shafkat Bin Hoque, Michael E. Liao, Saman Zare +10
Bulk AlN possesses high thermal conductivity due to long phonon mean-free-paths, high group velocity, and long lifetimes. However, the thermal transport scenario becomes very diffe…
cond-mat.mtrl-sci2024
Low Thermal Resistance of Diamond-AlGaN Interfaces Achieved Using Carbide Interlayers
Henry T. Aller, Thomas W. Pfeifer, Abdullah Mamun +12
This study investigates thermal transport across nanocrystalline diamond/AlGaN interfaces, crucial for enhancing thermal management in AlGaN/AlGaN-based devices. Chemical vapor dep…