Rhodium Plasmonics for Deep-Ultraviolet Bio-Chemical Sensing

Ahmadivand, Arash; Raju, Salahuddin; Kaya, Serkan; Pala, Nezih

doi:10.1007/s11468-015-0117-x

Cited by 44 publications

(25 citation statements)

References 48 publications

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“…Traditionally, nanoplasmonics focuses on noble metals (Au, Ag, Cu) or their alloys whose LSPRs are in the visible (Vis) or near-infrared (NIR) spectral regions [ 184 ]. In the ultraviolet (UV) region the considerable damping due to interband transitions [ 185 ] make electromagnetic enhancements comparatively small. Nevertheless, UV nanoplasmonics may offer new opportunities in surface-enhanced Raman spectroscopy (SERS) [ 186 ], photocatalysis [ 187 ], biology [ 188 ] and public safety and security for the detection of organic molecules and hazardous organic compounds [ 189 ].…”

Section: Promising Applications Of Lal Nanostructures For Biotechnmentioning

confidence: 99%

Nanoparticles Engineering by Pulsed Laser Ablation in Liquids: Concepts and Applications

et al. 2020

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Laser synthesis emerges as a suitable technique to produce ligand-free nanoparticles, alloys and functionalized nanomaterials for catalysis, imaging, biomedicine, energy and environmental applications. In the last decade, laser ablation and nanoparticle generation in liquids has proven to be a unique and efficient technique to generate, excite, fragment and conjugate a large variety of nanostructures in a scalable and clean way. In this work, we give an overview on the fundamentals of pulsed laser synthesis of nanocolloids and new information about its scalability towards selected applications. Biomedicine, catalysis and sensing are the application areas mainly discussed in this review, highlighting advantages of laser-synthesized nanoparticles for these types of applications and, once partially resolved, the limitations to the technique for large-scale applications.

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Section: Promising Applications Of Lal Nanostructures For Biotechnmentioning

confidence: 99%

Nanoparticles Engineering by Pulsed Laser Ablation in Liquids: Concepts and Applications

et al. 2020

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“…[151,152] Other UV appropriate metals such as platinum and rhodium do not oxidize, but they are rare in abundance and deemed impractical for device design. [153][154][155] Aluminum (Al) on the other hand has received the most attention following the pioneering work by Knight et al in which they demonstrated plasmonic resonance of single Al nanorods, imaged at wavelengths from 248 to 539 nm, showing both UV and visible resonance for transverse and longitudinal modes. [156] Al is a promising candidate for UV plasmonics considering its natural abundance and low cost, UV resonance range down to 210 nm, and a self-limiting native oxide which is typically only 2-3 nm thick.…”

Section: Perspective On New Materials For Broader Wavelength Rangementioning

confidence: 99%

Rainbows at the End of Subwavelength Discontinuities: Plasmonic Light Trapping for Sensing Applications

Farid

Dixon

Shayegannia

et al. 2021

Advanced Optical Materials

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Surface plasmon polaritons (SPPs) which exist at the metal-dielectric interface are guided by the coupling of electromagnetic waves to oscillations in the electron gas plasma created at metal surfaces. Plasmonics, a subset of the field of nanophotonics pertaining to all things beyond the diffraction limit, has flourished and evolved significantly over the past decade offering practical utility to a variety of applications. [1] Notwithstanding the ohmic loss in metals and commensurate limited propagation lengths of SPPs, the ability to effectively concentrate light in nanoscale volumes and generate extremely high electric field intensities at discontinuities or subwavelength patterned surfaces offers unique opportunities to enhance lightmatter interactions for a diverse range of functionalities. [2] Trapping broadband electromagnetic radiation over a range of deep subwavelength guided modes in a given structure provides opportunities for light-matter interactions at the nanoscale. Use of materials-commonly metals-that exhibit negative dielectric permittivity (ε < 0) at optical frequencies provide an optimum solution for light localization. Nanometallic light concentrators, in contrast to their dielectric counterparts, can squeeze and localize light into subwavelength volumes with greater control and higher efficiency. [3] Such plasmonic light concentration can be achieved by either resonant or non-resonant structures. In resonant structures, SPPs are created by time-varying electric fields that exert a force on the negatively charged electron gas inside a metal. These oscillations are resonantly driven leading to a strong charge displacement at specific optical frequencies and concentration of the light field within the structures. [4] For non-resonant light concentration effects, Schuller et al. demonstrated subwavelength light localization by introducing a feed gap in the metal structure for retardation-based resonators. The gap builds up opposite charges across it whereby SPPs encounter a longitudinal electric field component causing strong sub-wavelength light localization. [2] The focus of this article is plasmonic devices that enable rainbow light trapping, a specific modality of nanoscale field enhancement in which trapped light is spatially separated This article presents recent advances in plasmonic multiwavelength rainbow light trapping, a field that has evolved over the last decade and today is an active area of research interest encompassing a manifold of potential applications which include optical biosensing, photodetection, spectroscopy, and medicine. Conventional plasmonic devices are designed and optimized to enhance optical performance at single wavelengths, and as such are not suitable for applications that require electromagnetic field localization at multiple frequencies or broad frequency ranges of interest. To overcome these limitations, the ability to slow and trap light at multiple wavelengths and at different spatial locations has attracted significant scientific attention and opened up n...

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“…Other authors have proposed to used Rh nanoparticles for deep-UV bio-chemical sensing [78]. They proposed nanostructures composed of nanorings dimer-type antennas and an infinity shape structure built by a pair of split rings with a nanodisk.…”

Section: Rhodiummentioning

confidence: 99%

Plasmonics in the Ultraviolet with Aluminum, Gallium, Magnesium and Rhodium

et al. 2018

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Ultraviolet plasmonics (UV) has become an active topic of research due to the new challenges arising in fields such as biosensing, chemistry or spectroscopy. Recent studies have pointed out aluminum, gallium, magnesium and rhodium as promising candidates for plasmonics in the UV range. Aluminum and magnesium present a high oxidation tendency that has a critical effect in their plasmonic performance. Nevertheless, gallium and rhodium have drawn a lot of attention because of their low tendency of oxidation and, at the same time, good plasmonic response in the UV and excellent photocatalytic properties. Here, we present a short overview of the current state of UV plasmonics with the latest findings in the plasmonic response and applications of aluminum, gallium, magnesium and rhodium nanoparticles.

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Rhodium Plasmonics for Deep-Ultraviolet Bio-Chemical Sensing

Cited by 44 publications

References 48 publications

Nanoparticles Engineering by Pulsed Laser Ablation in Liquids: Concepts and Applications

Nanoparticles Engineering by Pulsed Laser Ablation in Liquids: Concepts and Applications

Rainbows at the End of Subwavelength Discontinuities: Plasmonic Light Trapping for Sensing Applications

Plasmonics in the Ultraviolet with Aluminum, Gallium, Magnesium and Rhodium

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