Strain-tuning of the electronic, optical, and vibrational properties of two-dimensional crystals

E Blundo, E Cappelluti, M Felici, G Pettinari… - Applied Physics …, 2021 - pubs.aip.org
The variegated family of two-dimensional (2D) crystals has developed rapidly since the
isolation of its forerunner: Graphene. Their planeconfined nature is typically associated with …

Spatiotemporally controlled room-temperature exciton transport under dynamic strain

K Datta, Z Lyu, Z Li, T Taniguchi, K Watanabe… - Nature …, 2022 - nature.com
Two-dimensional transition metal dichalcogenides provide an attractive platform for studying
strain-dependent exciton transport at room temperature due to large exciton binding energy …

Conversion of Classical Light Emission from a Nanoparticle‐Strained WSe2 Monolayer into Quantum Light Emission via Electron Beam Irradiation

DD Xu, AF Vong, D Lebedev, R Ananth… - Advanced …, 2023 - Wiley Online Library
Solid‐state single photon emitters (SPEs) within atomically thin transition metal
dichalcogenides (TMDs) have recently attracted interest as scalable quantum light sources …

Non‐Uniform Strain Engineering of 2D Materials

S Kovalchuk, JN Kirchhof, KI Bolotin… - Israel Journal of …, 2022 - Wiley Online Library
Abstract 2D materials are elastic substances that can sustain high strain. While the response
of these materials to spatially uniform strain is well studied, the effects of spatially non …

Strain distribution in WS2 monolayers detected through polarization-resolved second harmonic generation

G Kourmoulakis, S Psilodimitrakopoulos… - Scientific Reports, 2024 - nature.com
Abstract Two-dimensional (2D) graphene and graphene-related materials (GRMs) show
great promise for future electronic devices. GRMs exhibit distinct properties under the …

Strain control of hybridization between dark and localized excitons in a 2D semiconductor

P Hernández López, S Heeg, C Schattauer… - Nature …, 2022 - nature.com
Mechanical strain is a powerful tuning knob for excitons, Coulomb-bound electron–hole
complexes dominating optical properties of two-dimensional semiconductors. While the …

Strain fingerprinting of exciton valley character in 2D semiconductors

AM Kumar, D Yagodkin, R Rosati, DJ Bock… - Nature …, 2024 - nature.com
Intervalley excitons with electron and hole wavefunctions residing in different valleys
determine the long-range transport and dynamics observed in many semiconductors …

Enhanced Dielectric Screening and Photoluminescence from Nanopillar-Strained MoS2 Nanosheets: Implications for Strain Funneling in Optoelectronic Applications

M Vutukuru, H Ardekani, Z Chen… - ACS Applied Nano …, 2021 - ACS Publications
Nonuniform strain on multilayer transition-metal dichalcogenide (TMDC) nanosheets is an
exciting path toward practical optoelectronic devices, as it combines the advantages of …

Fine-Tuning of the Excitonic Response in Monolayer WS2 Domes via Coupled Pressure and Strain Variation

E Stellino, B D'Alò, E Blundo, P Postorino… - Nano Letters, 2024 - ACS Publications
We present a spectroscopic investigation of the vibrational and optoelectronic properties of
WS2 domes in the 0–0.65 GPa range. The pressure evolution of the system morphology …

Mechanically-tunable bandgap closing in 2D graphene phononic crystals

JN Kirchhof, KI Bolotin - npj 2D Materials and Applications, 2023 - nature.com
We present a tunable phononic crystal which can be switched from a mechanically
insulating to a mechanically conductive (transmissive) state. Specifically, in our simulations …