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Strain-engineered growth of two-dimensional materials
Developed a new method to achieve built-in and tunable strain in two-dimensional materials directly via growth.
Significance and Impact
The ability to realize built-in strain for 2D materials allows for controlled modification of band structure that can lead to more efficient devices and further exploration of the underlying physics.
- Obtained both tensile and compressive strain engineering.
- Achieved direct bandgap bilayer WSe2 on a rigid substrate via tensile strain.
- Observed brightening of the dark exciton in tensile strained monolayer WSe2.
G. H. Ahn, M. Amani, H. Rasool, D.-H. Lien, J. P. Mastandrea, J. W. Ager III, M. Dubey, D. C. Chrzan, A. M. Minor, A. Javey. Strain-engineered growth of two-dimensional materials. Nature Comm. 8:608 (2017)