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Atomic‐Level Sculpting of Crystalline Oxides: Toward Bulk Nanofabrication with Single Atomic Plane Precision
Authors:Stephen Jesse  Qian He  Andrew R Lupini  Donovan N Leonard  Mark P Oxley  Oleg Ovchinnikov  Raymond R Unocic  Alexander Tselev  Miguel Fuentes‐Cabrera  Bobby G Sumpter  Stephen J Pennycook  Sergei V Kalinin  Albina Y Borisevich
Abstract:The atomic‐level sculpting of 3D crystalline oxide nanostructures from metastable amorphous films in a scanning transmission electron microscope (STEM) is demonstrated. Strontium titanate nanostructures grow epitaxially from the crystalline substrate following the beam path. This method can be used for fabricating crystalline structures as small as 1–2 nm and the process can be observed in situ with atomic resolution. The fabrication of arbitrary shape structures via control of the position and scan speed of the electron beam is further demonstrated. Combined with broad availability of the atomic resolved electron microscopy platforms, these observations suggest the feasibility of large scale implementation of bulk atomic‐level fabrication as a new enabling tool of nanoscience and technology, providing a bottom‐up, atomic‐level complement to 3D printing.
Keywords:atomic‐level sculpting  complex oxides  epitaxy  electron beam  patterning  microscopy
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