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Choreographing Oscillatory Hydrodynamics with DNA-Coated Gold Nanoparticles.

ABSTRACT: Periodic responses to nonperiodic energy inputs, such as oscillations, are hallmarks of living systems. Nanoparticle-based systems have largely remained unexplored in the generation of oscillatory features. Here, we demonstrate a nanosystem featuring hierarchical response to light, where thermoplasmonic effects and reversible DNA-hybridization generate thermal convective forces and ultimately, oscillatory hydrodynamic flows. The slow aggregation of gold nanoparticles (AuNPs) serves as a positive feedback, while fast photothermal disassembly acts as negative feedback. These asymmetric feedback loops, combined with thermal hysteresis for time-delay, are essential ingredients for orchestrating an oscillating response.

SUBMITTER: Rao A

PROVIDER: S-EPMC11240255 | biostudies-literature | 2024 Jul

REPOSITORIES: biostudies-literature

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Choreographing Oscillatory Hydrodynamics with DNA-Coated Gold Nanoparticles.

Rao Anish A Iglesias Ana Sánchez AS Grzelczak Marek M

Journal of the American Chemical Society 20240628 27

Periodic responses to nonperiodic energy inputs, such as oscillations, are hallmarks of living systems. Nanoparticle-based systems have largely remained unexplored in the generation of oscillatory features. Here, we demonstrate a nanosystem featuring hierarchical response to light, where thermoplasmonic effects and reversible DNA-hybridization generate thermal convective forces and ultimately, oscillatory hydrodynamic flows. The slow aggregation of gold nanoparticles (AuNPs) serves as a positive ...[more]

PMID: 38941615

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