Optimization of Plasmonic Nanodipole Antenna Arrays for Sensing Applications

Alavirad, Mohammad; Roy, Langis; Berini, Pierre

doi:10.1109/jstqe.2013.2289963

Cited by 21 publications

(4 citation statements)

References 21 publications

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“…Some broad categories of applications include solar energy harvesting, biosensing, and photocatalysis. [1][2][3][4][5][6][7][8][9] In recent years the spontaneous deformation of a thin film leading to nanoscale patterns governed by self-organizing principles have generated great interest. The reason is that by controlling the choice of materials, such as film and substrate, intrinsic forces of surface tension and dispersion can be changed to modify the time and length scales of pattern formation.…”

Section: Introductionmentioning

confidence: 99%

Nanomaterials synthesis by a novel phenomenon: The nanoscale Rayleigh-Taylor instability

Yadavali

Kalyanaraman

2014

AIP Advances

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The Rayleigh-Taylor (RT) interfacial instability has been attributed to physical phenomenon in a wide variety of macroscopic systems, including black holes, laser generated plasmas, and thick fluids. However, evidence for its existence in the nanoscale is lacking. Here we first show theoretically that this instability can occur in films with thickness negligible compared to the capillary length when they are heated rapidly inside a bulk fluid. Pressure gradients developed in the evaporated fluid region produce large forces causing the instability. Experiments were performed by melting Au films inside glycerol fluid by nanosecond laser pulses. The ensuing nanoparticles had highly monomodal size distributions. Importantly, the spacing of the nanoparticles was independent of the film thickness and could be tuned by the magnitude of the pressure gradients. Therefore, this instability can overcome some of the limitations of conventional thin self-organization techniques that rely on film thickness to control length scales.

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Section: Introductionmentioning

confidence: 99%

Nanomaterials synthesis by a novel phenomenon: The nanoscale Rayleigh-Taylor instability

Yadavali

Kalyanaraman

2014

AIP Advances

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“…Similarly, a nanoantenna operating as a transmitter makes it possible to detect nearby particles (e.g., located in its terminal) from far zone, which can be useful in a plethora of applications, such as bio-sensing. Although most (particularly earlier) studies on nanoantennas have investigated relatively simple geometries, such as bowtie, 1,2,8,10 monopole/dipole, 4,6,12,23,28 disk (or its inversion, i.e., hole), 7,38 sphere, 16 as well as their arrays (e.g., Yagi-Uda structures), 11,13,15,22,24,25,36,37 mainly considering restrictions in experimental setups, relatively complex shapes (e.g., fractal, 3 cross-shaped, 21 flower-shaped, 26 spiral, 27 horn-shaped, 31 tapered, 33 log-periodic, 34,35 and combinations with other nanostructures 32 ) have also been studied. In fact, besides the basic material, 19,20 geometry is one of the most important factors for the performance of a nanoantenna, 29 and new advances in nanoscale fabrication techniques encourage researchers to resort alternative shapes, which can demonstrate desired capabilities (in terms of bandwidth, directivity, field enhancement, etc.)…”

Section: Introductionmentioning

confidence: 99%

Computational design of nanoantennas with improved power enhancement capabilities via shape optimization

et al. 2023

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.Computational design and analyses of nanoantennas obtained via surface shape optimization are presented. Starting with a kernel geometry, free deformations are applied on selected surfaces to reach optimal designs that can provide improved power enhancement capabilities at desired frequencies. An in-house implementation of genetic algorithms is efficiently combined with the multilevel fast multipole algorithm developed for accurate solutions of plasmonic problems to construct the effective optimization environment. The geometries obtained via optimization do not only represent optimal shapes within the allowed deformation limits but also reveal certain types of modifications on kernel geometries to improve their performances.

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“…1: Diagrams of various virus-sensing methodologies which depends on the plasmonic and metamaterial-based structures [13] A 4×4×4 mm3 millimetre scale antenna [14] that is more suited for WSN applications was proposed and evaluated for sensitivity and EIRP. It met Design and Analysis of Meta Resonator-based Tri-Band Antenna for Bio-sensing App the substrate's conformal requirements, but lagged in terms of SAR performance.The biosensing antenna array [15], which is made of a silicon substrate and glass coated water, runs at multiple wavelengths of 850 nm, 1310 nm, and 1550 nm, and performs well with the best possible bulk sensitivity, but the SAR parameters were not verified. With the aid of 3D printing technology, an RFID antenna [16] [17] created for biosensing applications was constructed with polypropylene (PP) and acrylonitrile butadiene styrene (ABS) substrate.…”

Section: Introductionmentioning

confidence: 99%

Design and Analysis of Metaresonator-Based Tri-Band Antenna for Biosensing Applications

Saranya¹,

Sharmila²,

Jeyakumar³

et al. 2023

Plasmonics

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A meta-material resonating antenna design having a hexagonal patch is proposed for bio sensing applications to work in triband resonating frequencies at 5.2GHz, 9.6GHz and 18.5GHz.The hexagonal patch is built on a dielectric constant of 4.4 FR4 epoxy substrate with a loss tangent of 0.030. Two different antennas are designed and tested with conducting metallic patches bounded by split ring resonator (SRR) slots and closed ring resonator slots which are also hexagon-shaped. Each antenna is capable of resonating at different frequency bands Design and Analysis of Meta Resonator-based Tri-Band Antenna for Bio-sensing App with good wide band characteristics due to the presence of partial ground plane. The hex-SRR resonates at 1.9GHz and 3.1GHz and hexagonal -CRR resonates at 5.2GHz, 9.6GHz, and 18.5GHz frequency bands resulting in multiband resonance characteristics. The proposed antenna is also validated with the study of metamaterial property of hexagonal SRR at the resonant frequency of 5.2GHz hence resulting in a compact (20 x 20 x 1.6) mm 3 and more dominant design. Furthermore, the specific absorption rate (SAR) for the three-layer phantom model is confirmed, resulting in superior performance that is more appropriate for biosensing and on-body wearable devices. The testing is performed using E5063A ENA vector network analyzer provided by Keysight technologies. The measured and simulated results are very close, resulting in a better validation of the proposed work.

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Optimization of Plasmonic Nanodipole Antenna Arrays for Sensing Applications

Cited by 21 publications

References 21 publications

Nanomaterials synthesis by a novel phenomenon: The nanoscale Rayleigh-Taylor instability

Nanomaterials synthesis by a novel phenomenon: The nanoscale Rayleigh-Taylor instability

Computational design of nanoantennas with improved power enhancement capabilities via shape optimization

Design and Analysis of Metaresonator-Based Tri-Band Antenna for Biosensing Applications

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