Local plasmon excitations in one-dimensional array of metal nanowires for sensor applications

Sosnova, M. V.; Dmitruk, N. L.; Коровин, А. В.; Mamykin, S.V.; Mynko, V. I.; Lytvyn, O. S.

doi:10.1007/s00340-009-3799-y

Cited by 18 publications

(10 citation statements)

References 16 publications

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“…Leveraging these properties, pure metallic nanowires on semiconductor substrates have been utilized for applications as diverse as waveguiding [209], transmission of single plasmon waves [210], modulators [211], and sensors [212]. In general, nanowires which sustain surface plasmon excitations (plasmonic nanowires) have been engineered to function in many of the same roles as their photonic counterparts, and have the ability to do so at dimensions beyond than the diffraction limit: unlike dielectric waveguides, the fundamental mode does not exhibit the cut-off behaviour displayed in Figure 11 [213].…”

Section: Size-dependent Optical Properties Of Semiconductor Nanowiresmentioning

confidence: 99%

Size-dependent chemical transformation, structural phase change, and optical properties of nanowires

Piccione

Agarwal

Jung

et al. 2013

Philosophical Magazine

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Nanowires offer a unique approach for the bottom up assembly of electronic and photonic devices with the potential of integrating photonics with existing technologies. The anisotropic geometry and mesoscopic length scales of nanowires also make them very interesting systems to study a variety of size-dependent phenomenon where finite size effects become important. We will discuss the intriguing size-dependent properties of nanowire systems with diameters in the 5 – 300 nm range, where finite size and interfacial phenomena become more important than quantum mechanical effects. The ability to synthesize and manipulate nanostructures by chemical methods allows tremendous versatility in creating new systems with well controlled geometries, dimensions and functionality, which can then be used for understanding novel processes in finite-sized systems and devices.

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Section: Size-dependent Optical Properties Of Semiconductor Nanowiresmentioning

confidence: 99%

Size-dependent chemical transformation, structural phase change, and optical properties of nanowires

Piccione

Agarwal

Jung

et al. 2013

Philosophical Magazine

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“…Such an excitation has been already observed experimentally in a onedimensional array of noninteractive gold nanowires for sensor applications [7]. But in case of p-polarized light there is an extremely high electric field intensity near sidewalls of nanowires and this value is about 100 times higher for the case of side coating of the wedge than the electric field intensity within the same localization in the case of the noncoated wedge.…”

mentioning

confidence: 69%

Prospective for creating a near-field scalpel for laser surgery

Коровин

Douplik

2012

Opt. Lett.

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The efficient electric field enhancement due to coating a dielectric wedge by plasmon-carrying nanowires has been demonstrated numerically within the framework of the finite-difference frequency-domain method. The numerical simulations show increasing of electric field intensity in the near-field region of the dielectric wedge coated by silver nanowires in the regime of local plasmon excitation up to 100 times versus the uncoated case.

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“…Two major kinds of these sensors have been developed: (1) Excitation of SPR on a metallic thin film, and measuring the shift of SPR wavelength, or excitation angle, caused by changing the refractive index of surrounding medium [48]. (2) Using metallic nanoparticles in solution [49,50], or in a periodic array [51][52][53][54][55][56][57][58], and measuring the shift of LSPR resulting from the change in the refractive index of surrounding medium. The SPR sensors mainly use the attenuated total internal refraction method for plasmon excitation.…”

Section: Refractive Index Sensor Overviewmentioning

confidence: 99%

“…To improve sensitivity, arrays of nonsymetric nanoparticles have been considered. Nanowire array (S ∼ 300 nm/RIU) [53], nanorod array (S ∼ 884 nm/RIU, FOM ∼ 1), norod array combined with cavity (S ∼ 354 nm/RIU, FOM ∼ 7.1) [54], and gold nanobar array placing close to a thin gold film (S ∼ 600 nm/RIU, FOM ∼ 4.68) [55] are few examples. More complicated structures, such as nanocrescent array (S ∼ 332 nm/RIU, FOM ∼ 0.4) [56], nanocrosses array (S ∼ 500-740 nm/RIU, FOM ∼ 2-2.2) [57], and double nanopillar array with nanogap (S ∼ 1056 nm/RIU, FOM ∼ 12.2) [58] have also been investigated.…”

Section: Refractive Index Sensor Overviewmentioning

confidence: 99%

Gpu Implementation of Split-Field Finite-Difference Time-Domain Method for Drude-Lorentz Dispersive Media

Shahmansouri¹,

Rashidian²

2012

PIER

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Abstract-Split-field finite-difference time-domain (SF-FDTD) method can overcome the limitation of ordinary FDTD in analyzing periodic structures under oblique incidence. On the other hand, huge run times of 3D SF-FDTD, is practically a major burden in its usage for analysis and design of nanostructures, particularly when having dispersive media. Here, details of parallel implementation of 3D SF-FDTD method for dispersive media, combined with totalfield/scattered-field (TF/SF) method for injecting oblique plane wave, are discussed. Graphics processing unit (GPU) has been used for this purpose, and very large speed up factors have been achieved. Also a previously reported formulation of SF-FDTD based on the Drude model for dispersive media, is extended to cover Drude-Lorentz model, which is usually needed for materials such as gold. The resulting reduction in the number of variables in this formulation, not only helps in reducing the computational time, but also makes it possible to be implemented in GPU, where its memory limitation is a major concern. As an example for demonstrating the importance of this method in optimization of nanophotonics structures, improvement in the performance of a refractive index sensor, made of an array of nanodisks, using suitable angle of incidence is reported. To the best of our knowledge this is the first report of GPU implementation of SF-FDTD method, capable of analyzing periodic dispersive media under oblique incidence.

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Local plasmon excitations in one-dimensional array of metal nanowires for sensor applications

Cited by 18 publications

References 16 publications

Size-dependent chemical transformation, structural phase change, and optical properties of nanowires

Size-dependent chemical transformation, structural phase change, and optical properties of nanowires

Prospective for creating a near-field scalpel for laser surgery

Gpu Implementation of Split-Field Finite-Difference Time-Domain Method for Drude-Lorentz Dispersive Media

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