Freestanding oxide membranes constitute an intriguing material platform for new functionalities and allow integration of oxide electronics with technologically important platforms such as silicon, flexible polyethylene terephthalate, and biocompatible polymide.
In 2020, a research team, composed by CNR-SPIN of Naples, CNR-IMM of Catania, Università degli Studi di Napoli Federico II, Niels Bohr Institute, University of Copenhagen and the Technical University of Denmark, reported a method to fabricate freestanding conducting LaAlO3/SrTiO3 (LAO/STO) membranes by spalling of strained heterostructures.