3D DNA origami-enabled molecularly addressable optical nanocircuit.

3D DNA origami enables the creation of molecularly addressable optical nanocircuits with a Q-factor of approximately 19.2, surpassing previous plasmonic cluster performances.

• Why it matters: Precise control over nanogaps and molecular placement is crucial for advancing nanophotonic devices, but has been difficult to achieve with existing methods, limiting experimental progress.
• What they did: The researchers used a robust 3D DNA origami scaffold to assemble gold nanoparticles and dye-loaded components into deterministic, symmetry-controlled nanocircuits, including a non-close-packed trimer with magnetic resonance.
• The result: This approach allows for tunable nanogaps and predictable light-molecule interactions, achieving a 100-fold PRET enhancement in dimers, paving the way for designer optical resonances in nanophotonics.