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Benchmarking monolayer MoS2 and WS2 field-effect transistors
Project Summary: To assess the potential of transition metal dichalcogenides (TMDs) for future circuits, it is important to study the variation in key device parameters across a large number of devices.
Elastic stiffening induces one-dimensional phonons in thin Ta2Se3 nanowires
Project Summary: Confined transport of energy carriers in low-dimensional materials could induce unusual phenomena, leading to properties promising for various applications.
Wafer scalable single-layer amorphous molybdenum trioxide
Project Summary: Molybdenum trioxide (a-MoO3) is a wide bandgap 2D layered oxide (Eg~3 eV) that is of interest for resistive switching-b
Multidimensional imaging reveals mechanisms controlling multimodal label-free biosensing in vertical 2DM heterostructures
Project Summary: A multi-dimensional optical imaging technique that combines scattering was developed to map subdiffractional distributions of doping and strain in MoS2 and MoS2/graphene vertical heterostructures.
An integrated quantum material testbed with multi-resolution photoemission spectroscopy
Project Summary: Angle-resolved photoemission spectroscopy (ARPES) has been established as a powerful tool to directly reveal electronic band structures of materials and played a critical role in discovering various topological materials such as topological insulators, Dirac semimetals, and Weyl semimetals. Investigations on quantum materials often require the combination of different modalities in photoemission spectroscopy.
Ultrafast optical melting of trimer superstructure in layered 1T′-TaTe2
Project Summary: Quasi-two-dimensional transition-metal dichalcogenides are a key platform for exploring emergent nanoscale phenomena arising from complex interactions. Access to the underlying degrees-of-freedom on their natural time scales motivates the use of advanced ultrafast probes sensitive to self-organized atomic-scale patterns.