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Tutorial: Characterizing Microscale Energy Transport in Materials with Transient Grating Spectroscopy
Usama Choudhry, Taeyong Kim, Melanie Adams +3
Microscale energy transport processes are crucial in microelectronics, energy harvesting devices, and emerging quantum materials. To study these processes, methods that can probe t…
Transient strain induced electronic structure modulation in a semiconducting polymer imaged by scanning ultrafast electron microscopy
Taeyong Kim, Saejin Oh, Usama Choudhry +3
Understanding the opto-electronic properties of semiconducting polymers under external strain is essential for their applications in flexible opto-electronic, light-emitting and ph…
Thermodynamically-informed Air-based Soft Heat Engine Design
Charles Xiao, Luke F. Gockowski, Bolin Liao +2
Soft heat engines are poised to play a vital role in future soft robots due to their easy integration into soft structures and low-voltage power requirements. Recent works have dem…
Spatiotemporal Imaging of Thickness-Induced Band Bending Junctions
Joeson Wong, Artur R. Davoyan, Bolin Liao +8
Van der Waals materials exhibit naturally passivated surfaces and can form versatile heterostructures, enabling observation of carrier transport mechanisms not seen in three-dimens…
Crystal-symmetry-based selection rules for anharmonic phonon-phonon scattering from a group theory formalism
Runqing Yang, Shengying Yue, Yujie Quan +1
Anharmonic phonon-phonon scattering serves a critical role in heat conduction in solids. Previous studies have identified many selection rules for possible phonon-phonon scattering…
Electric field effect on the thermal conductivity of wurtzite GaN
Yujie Quan, Sheng-Ying Yue, Bolin Liao
Gallium nitride (GaN), a wide band-gap semiconductor, has been broadly used in power electronic devices due to its high electron mobility and high breakdown voltage. Its relatively…