| 초록 |
DNA colloids have been extensively investigated due to orthogonality and programmability of binding sequences on particles which can be applied for sequence-specific biosensors, plasmonic sensors, building blocks for programmable self-assembly. Since aggregate of DNA colloids can change their form by stretching, shrinking, folding or melting of DNA duplexes, it offers great opportunities for designing functional materials. Here, I report multi-domain DNA colloid thin film microstructures made by Layer-by-Layer (LbL) deposition. The microstructure is designed to mechanically change its shapes by reversible strand exchange reaction among DNAs. As a result, bilayer DNA-GNP microstructure which has active and passive layers shows reversible folding by DNA hybridization. Finally, dual active DNA-GNP microstructure show programmed folding by independently addressable DNA hybridizations. |
