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In Situ Electron Microscopy of Substrate-Guided van der Waals Epitaxy

Scientific Achievement: The mechanisms of van der Waals (vdW) epitaxial growth of monolayer two-dimensional (2D) crystals from amorphous precursors were revealed by in situ pulsed laser heating within a TEM and first-principles calculations.

Significance and Impact: This work demonstrates a transformational in situ approach to induce and study the atomistic origins of non-equilibrium crystallization processes.

DOI: 10.1021/acsnano.1c00571