Overview of the Characteristics of Micro- and Nano-Structured Surface Plasmon Resonance Sensors

Roh, Sookyoung; Chung, Taerin; Lee, Byoungho

doi:10.3390/s110201565

Cited by 424 publications

(225 citation statements)

References 78 publications

(97 reference statements)

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“…Protein detection with plasmon-coupled microcavity biosensor [5,6], optical sensors such as Raman spectroscopy [7][8][9][10][11], plasmon resonance [12] and emerging Whispering Gallery Mode (WGM) [13][14][15][16][17][18] sensors have been utilized for detecting biomolecules at mg-ng/ml sensitivity levels. WGM biosensing offers a particularly sensitive approach to quantify the mass loading of biomolecules on the resonator surface with ultimate sensitivity estimated on the single molecule level [19,20].…”

Section: Biophotonicsmentioning

confidence: 99%

Ultrasensitive detection of a protein by optical trapping in a photonic‐plasmonic microcavity

Santiago-Cordoba

Çetinkaya

Boriskina

et al. 2012

Journal of Biophotonics

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Microcavity and whispering gallery mode (WGM) biosensors derive their sensitivity from monitoring frequency shifts induced by protein binding at sites of highly confined field intensities, where field strengths can be further amplified by excitation of plasmon resonances in nanoparticle layers. Here, we propose a mechanism based on optical trapping of a protein at the site of plasmonic field enhancements for achieving ultra sensitive detection in only microliter-scale sample volumes, and in real-time. We demonstrate femto-Molar sensitivity corresponding to a few 1000 s of macromolecules. Simulations based on Mie theory agree well with the optical trapping concept at plasmonic hotspots locations. ((c) 2012 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim

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Section: Biophotonicsmentioning

confidence: 99%

Ultrasensitive detection of a protein by optical trapping in a photonic‐plasmonic microcavity

Santiago-Cordoba

Çetinkaya

Boriskina

et al. 2012

Journal of Biophotonics

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“…In recent years, extensive investigations about the EOT of subwavelength metallic structures have been implemented [3,4], which have a great potential to control light and carry the promise of different applications in many areas, such as sensing [5], subwavelength optics [6], optoelectronics devices [7,8], and so on. And many efforts have also been made to explain the unique phenomena of EOT, and the existence of the surface plasmon resonance (SPR) and cavity mode (CM) [9,10] have been considered. The SPR and CM can be supported by various metal nano-array [11][12][13], and the resonant spectra of the SPR and CM sensitively vary with the geometric parameters and the environmental refractive index (RI) around the structures.…”

Section: Introductionmentioning

confidence: 99%

High-efficiency refractive index sensor based on the metallic nanoslit arrays with gain-assisted materials

Luo

Tao

et al. 2016

Nanophotonics

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Abstract:We have designed and investigated a three-band refractive index (RI) sensor in the range of 550-900 nm based on the metal nanoslit array with gain-assisted materials. The underlying mechanism of the three-band and enhanced characteristics of the metal nanoslit array with gain-assisted materials, have also been investigated theoretically and numerically. Three resonant peaks in transmission spectra are deemed to be in different plasmonic resonant modes in the metal nanoslit array, which leads to different responses for the plasmonic sensor. By embedding the structure into the CYTOP with proper gain-assisted materials, the sensing performances can be greatly enhanced due to a dramatic amplification of the extraordinary optical transmission (EOT) resonance by the gain medium. When the gain values reach their corresponding thresholds for the three plasmonic modes, the ultrahigh sensitivities in three bands can be obtained, and especially for the second resonant wavelength (λ 2 ), the FOM=128.1 and FOM*= 39100 can be attained at the gain threshold of k =0.011. Due to these unique features, the designing scheme of the proposed gain-assisted nanoslit sensor could provide a powerful approach to optimize the

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“…The huge interest to this kind of nanostructures is caused by interesting fundamental effects in metals of decreased dimensionality and by their promising applications. In particular, the availability of tunable plasmon resonances in metal nanostructures allows for the dramatic enhancement of such processes as Raman scattering (Surface Enhanced Raman Scattering -SERS), second harmonic generation, photoluminescence and charge transfer for the molecular and solid nanoobjects in the vicinity of the metal nanostructures [10][11][12][13][14][15][16][17][18]. The effect of SERS is based on the giant enhancement of the scattering cross-section of the molecules adsorbed on nanostructured metal surface (SERS-substrate) or on free-standing metal nanoparticles.…”

confidence: 99%

SERS of Rhodamine 6G on substrates with laterally ordered and random gold nanoislands

Yukhymchuk¹

2012

Semicond. Phys. Quantum Electron. Optoelectron.

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Abstract. Preparation and study of laterally ordered and disordered arrays of Au nanoislands as SERS substrates are reported. Developed technology allows obtaining SERS substrates with long-term stability (up to six months), efficient (up to 10 4 ) and laterally homogenous enhancement of the Raman signal from molecular analyte. The substrates developed are suitable for Raman bio-diagnostics, because their plasmon resonance can be tuned within the range 700-900 nm that falls into the transparency window of human tissues. The dependence of optical and enhancement properties of the substrates on their morphology has been studied. The morphology of the Au island film and their plasmon resonance spectrum depend noticeably on the nominal Au thickness and post-annealing temperature, while the duration of annealing is of minor importance. Formation of nanoholes in the case of Au substrates on holographically pre-patterned polymer film opens up the possibility of additional Raman enhancement via the "hot spot"-effect.

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Overview of the Characteristics of Micro- and Nano-Structured Surface Plasmon Resonance Sensors

Cited by 424 publications

References 78 publications

Ultrasensitive detection of a protein by optical trapping in a photonic‐plasmonic microcavity

Ultrasensitive detection of a protein by optical trapping in a photonic‐plasmonic microcavity

High-efficiency refractive index sensor based on the metallic nanoslit arrays with gain-assisted materials

SERS of Rhodamine 6G on substrates with laterally ordered and random gold nanoislands

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