Controlled Micro/Nanodome Formation in Proton-Irradiated Bulk Transition-Metal Dichalcogenides.
Davide Tedeschi,Elena Blundo,Marco Felici,Giorgio Pettinari,Boqing Liu,Tanju Yildrim,Elisa Petroni,Chris Zhang,Yi Zhu,Simona Sennato,Yuerui Lu,Antonio Polimeni +11 more
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TL;DR: Lithographic techniques provide a means to engineer the formation process so that the domes can be produced with well-ordered positions and sizes tunable from the nanometer to the micrometer scale, with important prospects for so far unattainable applications.
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Abstract: At the few-atom-thick limit, transition-metal dichalcogenides (TMDs) exhibit strongly interconnected structural and optoelectronic properties. The possibility to tailor the latter by controlling the former is expected to have a great impact on applied and fundamental research. As shown here, proton irradiation deeply affects the surface morphology of bulk TMD crystals. Protons penetrate the top layer, resulting in the production and progressive accumulation of molecular hydrogen in the first interlayer region. This leads to the blistering of one-monolayer thick domes, which stud the crystal surface and locally turn the dark bulk material into an efficient light emitter. The domes are stable (>2-year lifetime) and robust, and host strong, complex strain fields. Lithographic techniques provide a means to engineer the formation process so that the domes can be produced with well-ordered positions and sizes tunable from the nanometer to the micrometer scale, with important prospects for so far unattainable applications.
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Citations
Preparation and Modeling of Graphene Bubbles to Obtain Strain-Induced Pseudomagnetic Fields
TL;DR: A rapid bubbling method for strain engineering of pseudomagnetic fields in graphene bubbles. Numerical scheme for accurate strain and PMF calculations in non-spherical bubbles.
1
Trapping Hydrogen Molecules between Perfect Graphene.
Jie Xu,Weilin Liu,Wenna Tang,Gan Liu,Yujian Zhu,Guowen Yuan,Lei Wang,Xiaoxing Xi,Libo Gao +8 more
- 16 Aug 2023
TL;DR: Researchers successfully trap hydrogen molecules between perfect graphene lattices, forming stable bubbles with controllable density and size, and demonstrate a novel method for storing hydrogen in layered materials with potential for studying quantum effects.
1
Strong substrate effects in multilayered WS2 revealed by high-pressure optical measurements
R. Oliva,M. Wozniak,Paulo E. Faria Junior,F. Dybala,J. Kopaczek,Jaroslav Fabian,P.,Scharoch,Robert Kudrawiec +8 more
TL;DR: In this article , the effect of strain and dielectric environment on the electronic band structure and optical properties of a few-layered transition-metal dichalcogenide was investigated and it was shown that WS2 remains fully adhered to the substrate at least up to a 0.6% inplane compressive strain for a wide range of substrate materials.
1
•Posted Content
Engineered creation of periodic giant, non-uniform strains in MoS2 monolayers.
Elena Blundo,Cinzia Di Giorgio,Giorgio Pettinari,Tanju Yildirim,Marco Felici,Yuerui Lu,Fabrizio Bobba,Antonio Polimeni +7 more
TL;DR: In this paper, the authors demonstrate the possibility to subject micrometric regions of atomically thin molybdenum disulphide (MoS2) to giant strains with the desired ordering.
1
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