Plasmonic superstructures hold great potential in encrypted information chips but are still unsatisfactory in terms of resolution and maneuverability because of the limited fabrication strategies. Here, we develop an antielectric potential method in which the interfacial energy from the modification of 5-amino-2-mercapto benzimidazole (AMBI) ligand is used to overcome the electric resistance between the Au nanospheres (NSs) and substrate, thereby realizing the in situ growth of a Au-Ag heterodimers array in large scale. The morphology, number, and size of Ag domains on Au units can be controlled well by modulating the reaction kinetics and thermodynamics. Experiments and theoretical simulations reveal that patterned 3D Au-2D Ag and 3D Au-3D Ag dimer arrays with line widths of 400 nm exhibit cerulean and cyan colors, respectively, and achieve fine color modulation and ultrahigh information resolution. This work not only develops a facile strategy for fabricating patterned plasmonic superstructures but also pushes the plasmon-based high-resolution encrypted information chip into more complex applications.
Keyphrases
- visible light
- sensitive detection
- quantum dots
- high resolution
- reduced graphene oxide
- single molecule
- energy transfer
- health information
- highly efficient
- high throughput
- mass spectrometry
- high density
- human health
- signaling pathway
- healthcare
- gene expression
- air pollution
- genome wide
- single cell
- molecular dynamics simulations
- molecular dynamics
- dna methylation
- climate change
- electron transfer
- structural basis