Extended Data Fig. 1: Suspension of atomically thin hBN crystals on the perforated SiNx membrane.
From: Double-sided van der Waals epitaxy of topological insulators across an atomically thin membrane
a–c, Optical microscope images of ultrathin hBN layers: as exfoliated on the SiO2 surface (a), picked up by the PCL polymer stamp (b), transferred on the SiNx membrane with premade holes (c).
