ArticleACS nano2013
Off-resonance surface-enhanced Raman spectroscopy from gold nanorod suspensions as a function of aspect ratio: not what we thought.
Article in ACS nano, 2013. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 28 papers.
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Who cites it
28 citing papers in PubMed, 142 citations in OpenAlex.
- Surface-enhanced Raman spectroscopy in pharmaceutical analysis: from component determination to mechanism research.Mikrochimica acta · 2025Review
- Highly sensitive SERS-based lateral flow immunoassay of fipronil using bimetallic Au@Ag@Ag nanorods.Mikrochimica acta · 2024Article
- Rapid and Facile Synthesis of Gold Trisoctahedrons for Surface-Enhanced Raman Spectroscopy and Refractive Index Sensing.ACS applied nano materials · 2024Article
- Review
- Challenges and opportunities for SERS in the infrared: materials and methods.Nanoscale advances · 2023Review
- 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
- Off-Resonance Gold Nanobone Films at Liquid Interface for SERS Applications.Sensors (Basel, Switzerland) · 2021Article
- A wafer-scale fabrication method for three-dimensional plasmonic hollow nanopillars.Nanoscale advances · 2021Article
- Plasmonic Nanoparticles as Optical Sensing Probes for the Detection of Alzheimer's Disease.Sensors (Basel, Switzerland) · 2021Review
- Plasmonic and Electrostatic Interactions Enable Uniformly Enhanced Liquid Bacterial Surface-Enhanced Raman Scattering (SERS).Nano letters · 2020Article
- Plasmonics for Biosensing.Materials (Basel, Switzerland) · 2019Review
- Magnetite-Supported Gold Nanostars for the Uptake and SERS Detection of Tetracycline.Nanomaterials (Basel, Switzerland) · 2018Article
- Picoanalysis of Drugs in Biofluids with Quantitative Label-Free Surface-Enhanced Raman Spectroscopy.Small (Weinheim an der Bergstrasse, Germany) · 2018Article
- Emergence of two near-infrared windows for in vivo and intraoperative SERS.Current opinion in chemical biology · 2018Review
- Molecular Detection and Analysis of Exosomes Using Surface-Enhanced Raman Scattering Gold Nanorods and a Miniaturized Device.Theranostics · 2018Article
- Fabrication of Semiconductor ZnO Nanostructures for Versatile SERS Application.Nanomaterials (Basel, Switzerland) · 2017Review
- Ultrahigh affinity Raman probe for targeted live cell imaging of prostate cancer.Chemical science · 2016Article
- Single Particle Deformation and Analysis of Silica-Coated Gold Nanorods before and after Femtosecond Laser Pulse Excitation.Nano letters · 2016Article
- Nanostructured gold microelectrodes for SERS and EIS measurements by incorporating ZnO nanorod growth with electroplating.Scientific reports · 2015Article
Corrections and comments
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Authors and funding
8 authors at 1 institution in 1 country.
Funding
Abstract
Design of nanoparticles for surface-enhanced Raman scattering (SERS) within suspensions is more involved than simply maximizing the local field enhancement. The enhancement at the nanoparticle surface and the extinction of both the incident and scattered light during propagation act in concert to determine the observed signal intensity. Here we explore these critical aspects of signal generation and propagation through experiment and theory. We synthesized gold nanorods of six different aspect ratios in order to obtain longitudinal surface plasmon resonances that incrementally spanned 600-800 nm. The Raman reporter molecule methylene blue was trap-coated near the surface of each nanorod sample, generating SERS spectra, which were used to compare Raman signals. The average number of reporter molecules per nanorod was quantified against known standards using electrospray ionization liquid chromatography mass spectrometry. The magnitude of the observed Raman signal is reported for each aspect ratio along with the attenuation due to extinction in suspension. The highest Raman signal was obtained from the nanorod suspension with a plasmon resonance blue-shifted from the laser excitation wavelength. This finding is in contrast to SERS measurements obtained from molecules dried onto the surface of roughened or patterned metal substrates where the maximum observed signal is near or red-shifted from the laser excitation wavelength. We explain these results as a competition between SERS enhancement and extinction, at the excitation and scattered wavelengths, on propagation through the sample.
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Registered trials
Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the OpenQuestion graph.