Fig. 1: Surface-directed patterning of 3D DNA-frame superlattice on oxide surfaces.
From: Macroscale-area patterning of three-dimensional DNA-programmable frameworks
a Schematic illustrating the patterning of PEG template by EBL, followed by the deposition of a layer of octahedral DNA frames, and crystallization of 3D DNA crystals on patterned oxide surfaces with bifunctionalized and monofunctionalized surfaces. b Schematics and representation of surface-patterned DNA frame superlattice on bifunctionalized Si/SiO2, Al2O3, TiO2, and ZnO surfaces, respectively. The edge length of the microwells is 100 µm for Si/SiO2 and 20 µm for Al2O3, TiO2, and ZnO surfaces. The SiO2 refers to the native oxide layer on the silicon wafer without additional coating. c Optical images showcasing the patterned DNA frame superlattices over a macroscopic area (10 mm²). Field stitches have been utilized to present a larger view. The inset features a photograph of the superlattice-patterned silicon wafer following silication, accompanied by a ruler marked with an overall length of 1 cm for scale reference.
