Selective control of reconfigurable chiral plasmonic metamolecules
Anton Kuzyk,Anton Kuzyk,Maximilian J. Urban,Maximilian J. Urban,Andrea Idili,Francesco Ricci,Na Liu,Na Liu +7 more
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TLDR
This work outlines a new blueprint for implementation of advanced active plasmonic systems, in which individual structural species can be programmed to perform multiple tasks and functions in response to independent external stimuli.Abstract:
Selective configuration control of plasmonic nanostructures using either top-down or bottom-up approaches has remained challenging in the field of active plasmonics. We demonstrate the realization of DNA-assembled reconfigurable plasmonic metamolecules, which can respond to a wide range of pH changes in a programmable manner. This programmability allows for selective reconfiguration of different plasmonic metamolecule species coexisting in solution through simple pH tuning. This approach enables discrimination of chiral plasmonic quasi-enantiomers and arbitrary tuning of chiroptical effects with unprecedented degrees of freedom. Our work outlines a new blueprint for implementation of advanced active plasmonic systems, in which individual structural species can be programmed to perform multiple tasks and functions in response to independent external stimuli.read more
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DNA-based self-assembly of chiral plasmonic nanostructures with tailored optical response
Anton Kuzyk,Robert D. Schreiber,Zhiyuan Fan,Günther Pardatscher,Eva-Maria Roller,Alexander Högele,Friedrich C. Simmel,Alexander O. Govorov,Tim Liedl +8 more
TL;DR: It is shown that DNA origami enables the high-yield production of plasmonic structures that contain nanoparticles arranged in nanometre-scale helices, and it is found that the structures in solution exhibit defined circular dichroism and optical rotatory dispersion effects at visible wavelengths that originate from the collective plAsmon–plasmon interactions of the nanoparticles positioned with an accuracy better than two nanometres.