Surface plasmonic polaritonic sensor using a dielectric columnar thin film

Swiontek, Stephen E.; Faryad, Muhammad; Lakhtakia, Akhlesh

doi:10.1117/1.jnp.8.083986

Cited by 11 publications

(11 citation statements)

References 17 publications

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“…Large ohmic losses occur in metals that induce a damping of their optical response. Novel materials are to be developed in order to obtain good performances for the application to optical devices [205,206,207]. A promising way of development of such materials is based on dielectric materials [97].…”

Section: 3d Dielectric Resonators For Surface Field Enhancementmentioning

confidence: 99%

Light Concentration by Metal-Dielectric Micro-Resonators for SERS Sensing

et al. 2018

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Metal-dielectric micro/nano-composites have surface plasmon resonances in visible and near-infrared domains. Excitation of coupled metal-dielectric resonances is also important. These different resonances can allow enhancement of the electromagnetic field at a subwavelength scale. Hybrid plasmonic structures act as optical antennae by concentrating large electromagnetic energy in micro- and nano-scales. Plasmonic structures are proposed for various applications such as optical filters, investigation of quantum electrodynamics effects, solar energy concentration, magnetic recording, nanolasing, medical imaging and biodetection, surface-enhanced Raman scattering (SERS), and optical super-resolution microscopy. We present the review of recent achievements in experimental and theoretical studies of metal-dielectric micro and nano antennae that are important for fundamental and applied research. The main impact is application of metal-dielectric optical antennae for the efficient SERS sensing.

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Section: 3d Dielectric Resonators For Surface Field Enhancementmentioning

confidence: 99%

Light Concentration by Metal-Dielectric Micro-Resonators for SERS Sensing

et al. 2018

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“…A deposition controller was programmed to accommodate three material-specific parameters (bulk density, zratio, and tooling factor) for Al. The sample holder was then placed in the chamber and oriented to ensure that χ v = 90 • [28]. In order to facilitate the deposition of a planar, dense, and homogeneous thin film, a computer-controlled stepper motor was turned on to rotate the sample holder at 120 rpm about a central normal axis passing through the sample holder.…”

Section: Deposition Of Al Thin Filmmentioning

confidence: 99%

Influence of silver-nanoparticle layer in a chiral sculptured thin film for surface-multiplasmonic sensing of analytes in aqueous solution

Swiontek

Lakhtakia

2016

J. Nanophoton

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Multiple surface-plasmon-polariton (SPP) waves at a single free-space wavelength can be guided by the interface of a metal and a chiral sculptured thin film (STF). Multilayers comprising a chiral STF of lanthanum fluoride deposited on an aluminum thin film deposited on a glass substrate were fabricated. In some chips, a 5-nm-thick layer of silver nanoparticles was deposited at one of two selected depths in the chiral STF. The chips were then deployed in a prism-coupled configuration in a custom-built machine for surface multiplasmonic resonance imaging (SMPRI), in order to observe the effects the silver-nanoparticle layer on the multiple SPP-wave modes. The angular locations of the SPP-wave modes were found to be not greatly dependent on whether the silver-nanoparticle layer was deposited after the first or the second period of a three-periods-thick chiral STF. With aqueous solutions of sucrose as infiltrant fluids, the angular shifts of the SPP-wave modes were determined as the refractive index of the infiltrant fluid increased. The use of a charge-coupled devices (CCD) camera and upgraded motion-control equipment for SMPRI was found to increase the sensitivity of the chip. The silver-nanoparticle layer was also found to enhance the sensitivity.

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“…Such sensors with the implementation of planar metallic and dielectric STF interface have also been appeared in the literature. [9] In the present work, we use nanoengineered metallic films comprised of chiral nanohelixes as well as columnar nanorods deposited over glass substrate. Both the configurations essentially constitute the formation of interface partnered by two completely different kinds of mediums, and surface waves are expected to generate upon suitable excitation by the incident light.…”

Section: Introductionmentioning

confidence: 99%

Nanoengineered thin films of copper for the optical monitoring of urine – a comparative study of the helical and columnar nanostructures

Ghasemi

Choudhury

Dehzangi

2015

Journal of Electromagnetic Waves and Applications

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The use of nanoengineered metallic complex mediums in the monitoring of urine is investigated in this study. As to the mediums used, nanoscaled thin films comprised of (i) copper nanohelix structures of two different numbers of helical turns and (ii) columnar thin films of copper nanorods of two different slanting angles grown over planar glass surface -a dielectric medium -are taken into account. TurbadarKretschmann-Raether (TKR) configuration is used to couple light with the metallic nanoengineered thin films, and the absorption spectra are monitored corresponding to two different optical wavelengths. The void regions in nanoengineered metallic films are filled up with urine as the analyte, which causes to alter the constitutive properties, resulting thereby shifts in the peaks in absorption spectra. Prominent shifts in absorption peaks corresponding to nanoengineered mediums infiltrated with urine essentially confirm prudent optical sensing characteristics of the devices under consideration.

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Surface plasmonic polaritonic sensor using a dielectric columnar thin film

Cited by 11 publications

References 17 publications

Light Concentration by Metal-Dielectric Micro-Resonators for SERS Sensing

Light Concentration by Metal-Dielectric Micro-Resonators for SERS Sensing

Influence of silver-nanoparticle layer in a chiral sculptured thin film for surface-multiplasmonic sensing of analytes in aqueous solution

Nanoengineered thin films of copper for the optical monitoring of urine – a comparative study of the helical and columnar nanostructures

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