Palladium-coated narrow groove plasmonic nanogratings for highly sensitive hydrogen sensing

Subramanian, Senthil; Kumar, Kamal; Dhawan, Anuj

doi:10.1039/c9ra08101a

Cited by 13 publications

(12 citation statements)

References 32 publications

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“…Nanoparticles (NPs), such as those of platinum (Pt), − palladium (Pd), ,,− and Au–Pd, − have attracted considerable interest for use in a variety of H 2 -sensing platforms and applications due to their unique catalytic abilities. Our basis for choosing Au–Pd NPs for our research objectives stems from reports describing how alloys containing Au and Pd are particularly advantageous for H 2 -sensing and exhibiting enhanced H 2 adsorption and solubility. , With respect to signal transduction for H 2 -sensing, catalytic NPs have been combined with different indicators for the development of optical H 2 sensors in which the sensing mechanism relies on the dissociation of H 2 at the NP surface to form highly reactive hydrogen atoms that subsequently undergo a redox reaction with an indicator to cause a visual color change. , For example, Seo et al used a reagent containing methylene blue and Pt NPs to quantify the amount of H 2 dissolved in water as the reagent underwent a blue to colorless transition upon reaction with H 2 .…”

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Indicator Dyes and Catalytic Nanoparticles for Irreversible Visual Hydrogen Sensing

et al. 2020

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Using ultraviolet–visible (UV–vis) absorption spectroscopy, we have tested the reactivity of various indicator molecules combined with catalytic bimetallic gold–palladium nanoparticles (Au–Pd NPs) in solution for an irreversible and visual response to H2. Our aim was to identify the most suitable indicator/Au–Pd NP system for the future development of a thin, wearable, and visual H2 sensor for noninvasive monitoring of in vivo Mg-implant biodegradation in research and clinical settings with fast response time. The indicators studied were bromothymol blue, methyl red, and resazurin, and the reactions of each system with H2 in the presence of Au–Pd NPs caused visual and irreversible color changes that were concluded to proceed via redox processes. The resazurin/Au–Pd NP system was deemed best-suited for our research objectives because (1) this system had the fastest color change response to H2 at levels relevant to in vivo Mg-implant biodegradation compared to the other indicator/Au–Pd NP systems tested, (2) the observed redox chemistry with H2 followed well-understood reaction pathways reported in the literature, and (3) the redox products were nontoxic and appropriate for medical applications. Studying the effects of the concentrations of H2, Au–Pd NPs, and resazurin on the color change response time within the resazurin/Au–Pd NP system revealed that the H2-sensing elements can be optimized to achieve a faster or slower color change with H2 by varying the relative amounts of resazurin and Au–Pd NPs in solution. The results from this study are significant for future optical H2 sensor design.

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confidence: 99%

Indicator Dyes and Catalytic Nanoparticles for Irreversible Visual Hydrogen Sensing

et al. 2020

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“…They further calculated the hydrogen sensing performances of the Pd‐coated Au nanogratings and the Δλ was estimated to be ≈80 nm for PdH x = 0.65 . [ 86 ]…”

Section: Discussionmentioning

confidence: 99%

“…They further calculated the hydrogen sensing performances of the Pd-coated Au nanogratings and the Δλ was estimated to be ≈80 nm for PdH x = 0.65 . [86] The MIM configuration has been widely studied in experiments. A Pd/Y (WO 3 )/Au MIM configuration was investigated by Beni et al (Figure 10a,b), and a fast response time of 10 s (Figure 10c) was reported.…”

Section: Indirect Hydrogen Detection Based On Plasmonic Filmsmentioning

confidence: 99%

Plasmonic Hydrogen Sensors

Sun

Zhao

2022

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Hydrogen is regarded as the ultimate fuel and energy carrier with a high theoretical energy density and universality of sourcing. However, hydrogen is easy to leak and has a wide flammability range in air. For safely handling hydrogen, robust sensors are in high demand. Plasmonic hydrogen sensors (PHS) are attracting growing interest due to the advantages of high sensitivity, fast response speed, miniaturization, and high‐degree of integration, etc. In this review, the mechanism and recent development (mainly after the year 2015) of hydrogen sensors based on plasmonic nanostructures are presented. The working principle of PHS is introduced. The sensing properties and the effects of resonance mode, configuration, material, and structure of the plasmonic nanostructures on the sensing performances are discussed. The merit and demerit of different types of plasmonic nanostructures are summarized and potential development directions are proposed. The aim of this review is not only to clarify the current strategies for PHS, but also to give a comprehensive understanding of the working principle of PHS, which may inspire more ingenious designs and execution of plasmonics for advanced hydrogen sensors.

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“…A high-performance plasmonic transmission structure consisting of two cascaded ultrathin metallic nanogratings was proposed, which obtained near-perfect transmission and ultra-narrow bandwidth of 20 nm in sensing and filtering applications [17]. A palladium-coated narrow groove nanograting was designed, which was able to achieve highly sensitive hydrogen sensing capacity at visible and near-infrared wavelengths in the Nanomaterials 2021, 11, 47 2 of 13 case of normal or angular illumination from the side of narrow groove [18]. Despite there being a variety of nanogratings described in previous reports, most studies have focused mainly on only one or two typical optical characteristics.…”

Section: Introductionmentioning

confidence: 99%

Bidirectional Angle-Tolerant Polarization-Tuned Filtering and Wide-Range Refractive Index Sensing Based on Metal Film Coated Nanograting

Cui

Chen

et al. 2020

Nanomaterials

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The miniaturization and integration of photonic devices are new requirements in the fast-growing optics field. In this paper, we focus on a feature-rich sub-wavelength nanograting-coated single-layer metal film. The numerical results show that the reflection behaviors of this proposed structure can realize bidirectional dual-channel ultra-narrowband polarized filtering and bidirectional wavelength-modulated sensing in a wide refractive index (RI) range from 1.0 to 1.4 for incident angle of 10° with transverse-magnetic (TM) polarized illumination at wavelengths between 550 nm to 1500 nm. Moreover, the bidirectional properties of filtering and sensing are not obviously decreased when increasing incident angle from 10° to 30°, and decreasing incident angle from 10° to 0°. The calculated RI sensitivity can be up to 592 nm/RIU with a high figure of merit (FOM) of 179.4 RIU−1. More to the point, this nanograting has a simple structure and is less sensitive to the height and shape of grating ridge, which provides great convenience for the fabrication of devices. The other thing that is going on is that this structure can also realize synchronously tunable color filtering, including green to red, with high color purity in the visible band by choosing the period. The underlying physical mechanism is analyzed in detail, and is primarily attributed to surface plasmon polariton (SPP) resonance and dipole resonance at double plasmon resonance wavelengths. This work has tremendous potential in developing multipurpose and high-performance integrated optical devices such as spectral filters, colored displays and plasmon biomedical sensors.

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Palladium-coated narrow groove plasmonic nanogratings for highly sensitive hydrogen sensing

Abstract: In this paper, we propose novel plasmonic hydrogen sensors based on palladium coated narrow-groove plasmonic nanogratings for sensing of hydrogen gas at visible and near-infrared wavelengths.

Cited by 13 publications

References 32 publications

Indicator Dyes and Catalytic Nanoparticles for Irreversible Visual Hydrogen Sensing

Indicator Dyes and Catalytic Nanoparticles for Irreversible Visual Hydrogen Sensing

Plasmonic Hydrogen Sensors

Bidirectional Angle-Tolerant Polarization-Tuned Filtering and Wide-Range Refractive Index Sensing Based on Metal Film Coated Nanograting

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