ArticleThe journal of physical chemistry letters2013
Competition Between Extinction and Enhancement in Surface Enhanced Raman Spectroscopy.
Article in The journal of physical chemistry letters, 2013. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 6 papers.
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Who cites it
6 citing papers in PubMed.
- Combining Acoustic Bioprinting with AI-Assisted Raman Spectroscopy for High-Throughput Identification of Bacteria in Blood.Nano letters · 2023Article
- Effects of Cascading Optical Processes: Part I: Impacts on Quantification of Sample Scattering Extinction, Intensity, and Depolarization.Analytical chemistry · 2023Article
- Plasmonic and Electrostatic Interactions Enable Uniformly Enhanced Liquid Bacterial Surface-Enhanced Raman Scattering (SERS).Nano letters · 2020Article
- Measuring binding kinetics of aromatic thiolated molecules with nanoparticles via surface-enhanced Raman spectroscopy.Nanoscale · 2015Article
- Shedding light on the extinction-enhancement duality in gold nanostar-enhanced Raman spectroscopy.Angewandte Chemie (International ed. in English) · 2014Article
- Observation of molecular diffusion in polyelectrolyte-wrapped SERS nanoprobes.Langmuir : the ACS journal of surfaces and colloids · 2014Article
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Authors and funding
8 authors.
Funding
Abstract
Conjugated metallic nanoparticles are a promising means to achieve ultrasensitive and multiplexed sensing in intact three-dimensional samples, especially for biological applications, via surface enhanced Raman scattering (SERS). We show that enhancement and extinction are linked and compete in a collection of metallic nanoparticles. Counterintuitively, the Raman signal vanishes when nanoparticles are excited at their plasmon resonance, while increasing nanoparticle concentrations at off-resonance excitation sometimes leads to decreased signal. We develop an effective medium theory that explains both phenomena. Optimal choices of excitation wavelength, individual particle enhancement factor and concentrations are indicated. The same processes which give rise to enhancement also lead to increased extinction of both the illumination and the Raman scattered light. Nanoparticles attenuate the incident field (blue) and at the same time provide local enhancement for SERS. Likewise the radiation of the Raman-scattered field (green) is enhanced by the near-by sphere but extinguished by the rest of the spheres in the suspension on propagation.
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Registered trials
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