Fig. 1: Schematics of 3D superlattice assembly from octahedra DNA frames and gold nanoparticle, and its conversion into silica and superconductive structure.
From: DNA-assembled superconducting 3D nanoscale architectures
a DNA origami octahedral frames. b Integration of DNA frames with gold 10 nm nanoparticles and assembly of frames into superlattice with cubic unit cell. (AuNP used here for structural characterization and are not shown in other schematics). c Stepwise conversion process from DNA superlattices to SiO2 and to Nb-coated structures. d Schematic of the formed simple cubic arrangement of octahedra frames. A tetragonal arrangement AuNP’s is determined by SAXS: data (orange), model (blue), indexed diffraction peaks, (001), (100), (101), (111), (002), (200) etc., are shown with vertical black lines. SEM micrographs of e large scale and f close up images of fabricated silica superlattices. g Schematic of low-temperature electrical measurement setup for Nb superlattice using four-point probe.
