ArticleProceedings of the National Academy of Sciences of the United States of America2020
Phase imaging of transition from classical to quantum plasmonic couplings between a metal nanoparticle and a metal surface.
Article in Proceedings of the National Academy of Sciences of the United States of America, 2020. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 7 papers.
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Who cites it
7 citing papers in PubMed.
- Large field-of-view plasmonic scattering imaging and sensing of nanoparticles with isotropic point-spread-function.Nature communications · 2025Article
- Precise Sizing and Collision Detection of Functional Nanoparticles by Deep Learning Empowered Plasmonic Microscopy.Advanced science (Weinheim, Baden-Wurttemberg, Germany) · 2025Article
- Surface Plasmon Resonance Biosensors: A Review of Molecular Imaging with High Spatial Resolution.Biosensors · 2024Review
- Plasmonic Scattering Microscopy for Label-Free Imaging of Molecular Binding Kinetics: From Single Molecules to Single Cells.Chemistry methods : new approaches to solving problems in chemistry · 2023Article
- Intermediate-state imaging of electrical switching and quantum coupling of molybdenum disulfide monolayer.Proceedings of the National Academy of Sciences of the United States of America · 2022Article
- Evanescent scattering imaging of single protein binding kinetics and DNA conformation changes.Nature communications · 2022Article
- Single-molecule calorimeter and free energy landscape.Proceedings of the National Academy of Sciences of the United States of America · 2021Article
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Authors and funding
6 authors.
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Abstract
When a metal nanoparticle is brought near to a metal surface within electron tunneling distance (∼1 nm), classical electromagnetic coupling between the nanoparticle and the metal is expected to transition to quantum coupling. We show that this transition can be observed as a drastic phase change in the surface plasmon resonance (SPR) images of the gold nanoparticles. We study the transition by controlling the distance between the nanoparticles and electrode surface, modeling the impact of the transition on the SPR image in terms of a phase shift and demonstrating detection of microRNA based on the transition from classical to quantum coupling. The work shows that the quantum coupling can be directly visualized in SPR, and the extremely sensitive dependence of the transition on distance leads to a biosensing principle with SPR.
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