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A team led by the Oak Ridge National Laboratory (ORNL) explored how 2D crystals grow over 3D objects and how the curvature of 3D objects can stretch and strain the 2D crystals. The team’s findings could lead to a strategy for engineering strain during the growth of crystals to fabricate single-photon emitters for quantum information processing.
When atomically thin 2D crystals were grown on substrates patterned with sharp steps and trenches, the crystals grew up and down these flat obstacles without changing their properties or growth rates. However, when the 2D crystals were grown on curvy surfaces, the crystals were forced to stretch as they grew in order to maintain their crystal structure. The researchers found that they…READ MORE