Tailoring plasmonic substrates for surface enhanced spectroscopies

Lal, Surbhi; Grady, Nathaniel K.; Kundu, Janardan; Levin, Carly S.; Lassiter, J. Britt; Halas, Naomi J.

doi:10.1039/b705969h

Cited by 528 publications

(469 citation statements)

References 56 publications

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“…A consequence of the interaction is the ability to concentrate light fields with orders of magnitude enhancement at visible and near infrared (NIR) wavelengths to the subwavelength scale. Such enhancements find profound applications in improving the efficiencies of several phenomena such as fluorescence,1, 2, 3 surface‐enhanced Raman spectroscopy (SERS),4, 5, 6, 7, 8 surface‐enhanced infrared absorption,9, 10, 11 single‐molecule detection,12, 13 nonlinear optical effects,14, 15, 16 and multiphoton polymerization 17, 18. Exploiting this highly confined optical field is crucial, but simultaneously it is also challenging to position the desired molecules or particles accurately at these locations.…”

Section: Introductionmentioning

confidence: 99%

Regioselective Localization and Tracking of Biomolecules on Single Gold Nanoparticles

et al. 2015

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Selective localization of biomolecules at the hot spots of a plasmonic nanoparticle is an attractive strategy to exploit the light–matter interaction due to the high field concentration. Current approaches for hot spot targeting are time‐consuming and involve prior knowledge of the hot spots. Multiphoton plasmonic lithography is employed to rapidly immobilize bovine serum albumin (BSA) hydrogel at the hot spot tips of a single gold nanotriangle (AuNT). Regioselectivity and quantity control by manipulating the polarization and intensity of the incident laser are also established. Single AuNTs are tracked using dark‐field scattering spectroscopy and scanning electron microscopy to characterize the regioselective process. Fluorescence lifetime measurements further confirm BSA immobilization on the AuNTs. Here, the AuNT‐BSA hydrogel complexes, in conjunction with single‐particle optical monitoring, can act as a framework for understanding light–molecule interactions at the subnanoparticle level and has potential applications in biophotonics, nanomedicine, and life sciences.

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Section: Introductionmentioning

confidence: 99%

Regioselective Localization and Tracking of Biomolecules on Single Gold Nanoparticles

et al. 2015

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“…Surface-enhanced Raman scattering (SERS) is a powerful spectroscopy technique that can provide non-destructive and ultra-sensitive characterization down to single molecular levels which are attached to nanometer sized metallic structures [18,19]. SERS was first discovered by Fleischmann et al [20] in 1974 who observed intense Raman scattering on the molecular pyridine adsorbed onto a roughened silver electrode surface from aqueous solution.…”

Section: Surface-enhanced Spectroscopymentioning

confidence: 99%

Exploration of nano-surface chemistry for spectral analysis

Liu

Lü

et al. 2013

Chin. Sci. Bull.

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The applications of nano-surface chemistry in the field of spectral analysis have attracted growing interest in recent years. In this article, we reviewed the applications of nanomaterials-based chemical reactions for spectral analysis, including the development in plasma-catalysis, surface-enhanced spectroscopy, separation and preconcentration, chemical vapor generation, labeling and signal amplification. Introduction of nano-surface chemistry to spectral analysis not only improves the sensitivity and selectivity, broadens the application range of spectral analysis, but also affords analytical community special characterization tools.surface chemistry, nanomaterial, plasma, separation, chemical vapor generation, opticle gas sensors, atomic spectrometry Citation:Li C H, Liu R, Lü Y, et al. Exploration of nano-surface chemistry for spectral analysis.

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“…In SEIRA, vibrational modes of molecules with a change of dipole moment perpendicular to the substrate are enhanced and therefore this technique has potential for providing the information about orientation of adsorbed species with respect to the surface. Since its invention, SEIRA has been used in numerous applications in chemical analysis and characterization and biochemical sensing [75].…”

Section: Surface Enhanced Infrared Absorptionmentioning

confidence: 99%

Imaging and spectroscopy through plasmonic nano-probe

Saito

Verma

2009

Eur. Phys. J. Appl. Phys.

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Abstract. This article is a comprehensive review of the subject of near-field nano imaging and spectroscopy by surface plasmon polaritons induced on a metallized probe. The emphasis of the review is on fundamental aspects of plasmon enhancement and near-field spectroscopy, which are categorized as optical antenna structures, polarization properties in near-field, resonance frequency of surface plasmons, etc. Most recent studies that contribute to the understanding and interpretation of these phenomena are highlighted. Applications of near-field optics as newly established analytical tools for biology, materials sciences and plasmonic superlenses are included in the article.

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Tailoring plasmonic substrates for surface enhanced spectroscopies

Cited by 528 publications

References 56 publications

Regioselective Localization and Tracking of Biomolecules on Single Gold Nanoparticles

Regioselective Localization and Tracking of Biomolecules on Single Gold Nanoparticles

Exploration of nano-surface chemistry for spectral analysis

Imaging and spectroscopy through plasmonic nano-probe

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