Optically resolving the dynamic walking of a plasmonic walker couple

Deterministic placement and dynamic manipulation of individual plasmonic nanoparticles with nanoscale precision feature an important step toward active nanoplasmonic devices with prescribed levels of performance and functionalities at optical frequencies. In this Letter, we demonstrate a plasmonic w...

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Hauptverfasser: Urban, Maximilian J. (VerfasserIn) , Zhou, Chao (VerfasserIn) , Duan, Xiaoyang (VerfasserIn) , Liu, Na (VerfasserIn)
Dokumenttyp: Article (Journal)
Sprache:Englisch
Veröffentlicht: November 16, 2015
In: Nano letters
Year: 2015, Jahrgang: 15, Heft: 12, Pages: 8392-8396
ISSN:1530-6992
DOI:10.1021/acs.nanolett.5b04270
Online-Zugang:Verlag, lizenzpflichtig, Volltext: https://doi.org/10.1021/acs.nanolett.5b04270
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Verfasserangaben:Maximilian J. Urban, Chao Zhou, Xiaoyang Duan, and Na Liu

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520 |a Deterministic placement and dynamic manipulation of individual plasmonic nanoparticles with nanoscale precision feature an important step toward active nanoplasmonic devices with prescribed levels of performance and functionalities at optical frequencies. In this Letter, we demonstrate a plasmonic walker couple system, in which two gold nanorod walkers can independently or simultaneously perform stepwise walking powered by DNA hybridization along the same DNA origami track. We utilize optical spectroscopy to resolve such dynamic walking with nanoscale steps well below the optical diffraction limit. We also show that the number of walkers and the optical response of the system can be correlated. Our studies exemplify the power of plasmonics, when integrated with DNA nanotechnology for realization of advanced artificial nanomachinery with tailored optical functionalities. 
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