Metal grating on a substrate nanostructure for sensor applications

Karabchevsky, Alina; Krasnykov, Olga; Abdulhalim, Ibrahim; Hadad, B.; Goldner, Adi; Auslender, Mark; Hava, S.

doi:10.1016/j.photonics.2009.05.001

Cited by 37 publications

(11 citation statements)

References 17 publications

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“…This fact explains enhancement of the sensor which was designed by Karabchevsky et. al [13]. One of our findings is that the sensitivity is not affected by the addition of less than or equal to 15-nm PMMA layer as can be seen form Fig.…”

Section: Methodssupporting

confidence: 68%

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Theoretical and Experimental Investigation of Enhanced Transmission Through Periodic Metal Nanoslits for Sensing in Water Environment

et al. 2009

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Experimental and theoretical study of sensors based on enhanced transmission through periodic metal nanoslits is presented. Our approach consists of the design of one-dimensional nanoslits array and its application in sensing for water quality control. Rigorous coupled waves analysis was used for the design and fit to the experimental data. Two types of surface plasmon resonance excitations are shown to be possible, one at the upper grating-analyte interface and one at the lower grating-substrate interface. This latter resonance is shown to be affected by the multiple interference or cavity-type effects. Those structures were fabricated by deposition of the metal layer and electron beam lithography of the nanostructure. We found that Agbased periodic array exhibits the highest sensitivity to refractive index variations. Sensitivity enhancement was measured by ethanol concentrations in water. Stability of the Ag-based sensor was improved by covering the grating with less than 15 nm polymethyl methacrylate capping layer without deterioration of the sensitivity.

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Section: Methodssupporting

confidence: 68%

“…Since the extraordinary transmission is a result of SPR, it is expected to have good surface sensitivity similar to conventional SPR sensors [8,12]. Grating-based SPR devices show sensitivity of about 400 nm per refractive index unit (RIU) [10,13].…”

Section: Introductionmentioning

confidence: 99%

Theoretical and Experimental Investigation of Enhanced Transmission Through Periodic Metal Nanoslits for Sensing in Water Environment

et al. 2009

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“…This SP band can be shifted by numerous factors such as type of material, size, shape, inter-particle distance, particle density, and dielectric materials. Significant plasmonic properties can be exploited in various fields, particularly optoelectronic technologies like photovoltaic, phototransistor [5], LED [6,7] and sensor [8], by means of tuning this SP band from the UV through to IR region of the electromagnetic spectrum. Apart from light scattering and absorption, MNPs also can be used to enhance local electromagnetic fields.…”

Section: Introductionmentioning

confidence: 99%

RETRACTED: Investigation of plasmonic studies on morphology of deposited silver thin films having different thicknesses by soft computing methodologies—A comparative study

Zakaria

Noh

Petković

et al. 2014

Physica E: Low-dimensional Systems and Nanostructures

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“…Hence, larger sensitivities can be obtained by designing EOT sensors with resonances in the infrared range. Experimental demonstration for water pollution sensing was presented by Karabchevsky et al [183,184] in the visible range of the spectrum and in the near-infrared by Krasnykov et al [185] (see Fig. 31b).…”

Section: Review Articlementioning

confidence: 99%

Sensitivity‐enhancement methods for surface plasmon sensors

Shalabney

Abdulhalim

2011

Laser & Photonics Reviews

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442

254

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Surface plasmon resonance (SPR) sensors have been a mature technology for more than two decades now, however, recent investigations show continuous enhancement of their sensitivity and their lower detection limit. Together with the recent investigations in localized SPR phenomena, extraordinary optical transmission through nanoapertures in metals, and surface-enhanced spectroscopies, drastic developments are expected to revolutionize the field of optical biosensing. Sensitivity-enhancement (SE) techniques are reviewed focusing both on the physical transduction mechanisms and the system performance. In the majority of cases the SE is associated with the enhancement of the electromagnetic field overlap integral describing the interaction energy within the analyte. Other important mechanisms are the interaction between plasmons and excitons and between the analyte molecules and the metal surface. The lower detection limit can be reduced significantly if systems with high signal-to-noise ratio are used such as common-path interferometry, ellipsometry or polarimetry systems.

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Metal grating on a substrate nanostructure for sensor applications

Cited by 37 publications

References 17 publications

Theoretical and Experimental Investigation of Enhanced Transmission Through Periodic Metal Nanoslits for Sensing in Water Environment

Theoretical and Experimental Investigation of Enhanced Transmission Through Periodic Metal Nanoslits for Sensing in Water Environment

RETRACTED: Investigation of plasmonic studies on morphology of deposited silver thin films having different thicknesses by soft computing methodologies—A comparative study

Sensitivity‐enhancement methods for surface plasmon sensors

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