Bandgap Engineering of 2D Materials toward High-Performing Straintronics

CS Boland, Y Sun, DG Papageorgiou - Nano Letters, 2024 - ACS Publications
Straintronics leverages mechanical strain to alter the electronic properties of materials,
providing an energy-efficient alternative to traditional electronic controls while enhancing …

Pressure Dependence of Intra- and Interlayer Excitons in 2H-MoS2 Bilayers

P Steeger, JH Graalmann, R Schmidt, I Kupenko… - Nano Letters, 2023 - ACS Publications
The optical and electronic properties of multilayer transition metal dichalcogenides differ
significantly from their monolayer counterparts due to interlayer interactions. The separation …

Tip-Enhanced Dark Exciton Nanoimaging and Local Strain Control in Monolayer WSe2

K Hasz, Z Hu, KD Park, MB Raschke - Nano Letters, 2022 - ACS Publications
Dark excitons in transition-metal dichalcogenides, with their long lifetimes and strong
binding energies, provide potential platforms from photonic and optoelectronic applications …

Signatures of Electric Field and Layer Separation Effects on the Spin-Valley Physics of MoSe2/WSe2 Heterobilayers: From Energy Bands to Dipolar Excitons

PE Faria Junior, J Fabian - Nanomaterials, 2023 - mdpi.com
Multilayered van der Waals heterostructures based on transition metal dichalcogenides are
suitable platforms on which to study interlayer (dipolar) excitons, in which electrons and …

Tuning the Photoluminescence and Raman Response of Single-Layer WS2 Crystals Using Biaxial Strain

A Michail, D Anestopoulos, N Delikoukos… - The Journal of …, 2023 - ACS Publications
Chemical vapor deposited WS2 monolayers are subjected for the first time to controlled pure
biaxial tensile strain up to 0.7%. From photoluminescence (PL) spectroscopy, the trion and …

Strong manipulation of the valley splitting upon twisting and gating in and van der Waals heterostructures

K Zollner, PE Faria Junior, J Fabian - Physical Review B, 2023 - APS
Van der Waals (vdW) heterostructures provide a rich playground to engineer electronic,
spin, and optical properties of individual two-dimensional materials. We investigate the twist …

Dynamics of Moiré Exciton in a Twisted MoSe2/WSe2 Heterobilayer

H Kim, K Aino, K Shinokita, W Zhang… - Advanced Optical …, 2023 - Wiley Online Library
Moiré potential by stacking two monolayers with slightly different lattice mismatches acts as
periodic quantum confinement for optically generated excitons and provides spatially …

Deciphering Sodium‐Ion Storage: 2D‐Sulfide versus Oxide Through Experimental and Computational Analyses

S Sengupta, A Pramanik, CC de Oliveira… - Small, 2024 - Wiley Online Library
Transition metal derivatives exhibit high theoretical capacity, making them promising anode
materials for sodium‐ion batteries. Sulfides, known for their superior electrical conductivity …

Time-resolved momentum microscopy with fs-XUV photons at high repetition rates with flexible energy and time resolution

KJ Schiller, L Sternemann, M Stupar, A Omar… - Scientific Reports, 2025 - nature.com
Time-resolved momentum microscopy is an emerging technique based on photoelectron
spectroscopy for characterizing ultrafast electron dynamics and the out-of-equilibrium …

Strain Modulation in van der Waals Crystals Directly Exfoliated onto Piezoceramics─ Application in Micropiezoreflectance Spectroscopy

J Kopaczek, R Bartoszewicz… - ACS Applied …, 2024 - ACS Publications
The van der Waals (vdW) crystals and heterostructures, known for many intriguing physical
properties, have garnered significant interest in recent years. Develo** effective optical …