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Articles de revues sur le sujet « Nanoantenna array »

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Auteur : Grafiati
Publié le 1 avril 2023

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1

Sethi, Waleed Tariq, Olivier De Sagazan, Mohamed Himdi, Hamsakutty Vettikalladi et Saleh A. Alshebeili. « Thermoelectric Sensor Coupled Yagi–Uda Nanoantenna for Infrared Detection ». Electronics 10, no 5 (24 février 2021) : 527. http://dx.doi.org/10.3390/electronics10050527.

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We present an experimental demonstration of a thermoelectric sensor coupled with a nanoantenna as an alternative option for detecting infrared energy. Two nanoantenna design (single element and an array) variations based on Yagi-Uda technology and one separate nano-thermoelectric junction array were fabricated and tested. The nanoantennas were tuned to operate and respond at a center wavelength of 1550 nm (193.5 THz) optical C-band window, but they also exhibited a resonance response when excited by lasers of various wavelengths (650 nm and 940 nm). The radiation-induced electric currents in the nanoantennas, coupled with a nano-thermoelectric sensor, produced a potential difference as per the Seebeck effect. With respect to the uniform thermal measurements of the reference nanoantenna, the experiments confirmed the detection properties of the proposed nanoantennas; the single element detected a peak percentage voltage hike of 28%, whereas the array detected a peak percentage voltage hike of 80% at the center wavelength. Compared to state-of-the-art thermoelectric designs, this was the first time that such peak percentage voltages were experimentally reported following a planar design based on the Seebeck principle.
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Barho, Franziska B., Fernando Gonzalez-Posada, Maria-Jose Milla, Mario Bomers, Laurent Cerutti, Eric Tournié et Thierry Taliercio. « Highly doped semiconductor plasmonic nanoantenna arrays for polarization selective broadband surface-enhanced infrared absorption spectroscopy of vanillin ». Nanophotonics 7, no 2 (11 novembre 2017) : 507–16. http://dx.doi.org/10.1515/nanoph-2017-0052.

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AbstractTailored plasmonic nanoantennas are needed for diverse applications, among those sensing. Surface-enhanced infrared absorption (SEIRA) spectroscopy using adapted nanoantenna substrates is an efficient technique for the selective detection of molecules by their vibrational spectra, even in small quantity. Highly doped semiconductors have been proposed as innovative materials for plasmonics, especially for more flexibility concerning the targeted spectral range. Here, we report on rectangular-shaped, highly Si-doped InAsSb nanoantennas sustaining polarization switchable longitudinal and transverse plasmonic resonances in the mid-infrared. For small array periodicities, the highest reflectance intensity is obtained. Large periodicities can be used to combine localized surface plasmon resonances (SPR) with array resonances, as shown in electromagnetic calculations. The nanoantenna arrays can be efficiently used for broadband SEIRA spectroscopy, exploiting the spectral overlap between the large longitudinal or transverse plasmonic resonances and narrow infrared active absorption features of an analyte molecule. We demonstrate an increase of the vibrational line intensity up to a factor of 5.7 of infrared-active absorption features of vanillin in the fingerprint spectral region, yielding enhancement factors of three to four orders of magnitude. Moreover, an optimized readout for SPR sensing is proposed based on slightly overlapping longitudinal and transverse localized SPR.
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Chernykh, E. A., A. N. Filippov, A. M. Alekseev, M. A. Makhiboroda et S. S. Kharintsev. « Optical Heating Controlled With a Thermoplasmonic Metasurface ». Journal of Physics : Conference Series 2015, no 1 (1 novembre 2021) : 012029. http://dx.doi.org/10.1088/1742-6596/2015/1/012029.

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Abstract We develop a photothermal technology to control optical heating of polymer and liquid crystal films through a refractory titanium nitride (TiN) metasurface. The metasurface represents an array of identical square-shaped TiN nanoantennas on a Si substrate. Upon CW laser illumination, a TiN nanoantenna experiences anomalous Joule heating at a plasmon resonance. A temperature rise provides a unique opportunity for locally probing phase transitions. In the case of heterogeneous PMMA thin films or polymeric blends, a controlled optical heating is needed to probe the glass transition temperature (Tg) of their constituents. Here, we model a controlled thermal response originating from the TiN nanoantenna under CW laser illumination by using FDTD/FEM methods.
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Pinheiro Caetano, Inês Margarida, João Paulo N. Torres et Ricardo A. Marques Lameirinhas. « Simulation of Solar Cells with Integration of Optical Nanoantennas ». Nanomaterials 11, no 11 (30 octobre 2021) : 2911. http://dx.doi.org/10.3390/nano11112911.

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The evolution of nanotechnology has provided a better understanding of light-matter interaction at a subwavelength scale and has led to the development of new devices that can possibly play an important role in future applications. Nanoantennas are an example of such devices, having gained interest in recent years for their application in the field of photovoltaic technology at visible and infrared wavelengths, due to their ability to capture and confine energy of free-propagating waves. This property results from a unique phenomenon called extraordinary optical transmission (EOT) where, due to resonant behavior, light passing through subwavelength apertures in a metal film can be transmitted in greater orders of magnitude than that predicted by classical theories. During this study, 2D and 3D models featuring a metallic nanoantenna array with subwavelength holes coupled to a photovoltaic cell are simulated using a Finite Element Tool. These models present with slight variations between them, such as the position of the nanoantenna within the structure, the holes’ geometry and the type of cell, in order to verify how its optical response is affected. The results demonstrate that the coupling of nanoantennas to solar cells can be advantageous and improve the capture and absorption of radiation. It is concluded that aperture nanoantennas may concentrate radiation, meaning that is possible to tune the electric field peak and adjust absorption on the main layers. This may be important because it might be possible to adjust solar cell performance to the global regions’ solar spectrum by only adjusting the nanoantenna parameters.
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Gritsienko, A. V., N. S. Kurochkin, P. V. Lega, A. P. Orlov, A. S. Ilin, S. P. Eliseev et A. G. Vitukhnovsky. « Optical properties of new hybrid nanoantenna in submicron cavity ». Journal of Physics : Conference Series 2015, no 1 (1 novembre 2021) : 012052. http://dx.doi.org/10.1088/1742-6596/2015/1/012052.

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Abstract An essential area of nanophotonics is the creation of efficient quantum emitters operating at high frequencies. In this regard, plasmon nanoantennas based on nanoparticles on metal (nanopatch antennas) are incredibly relevant. We have created and investigated a new hybrid nanoantenna with a cube on metal and quantum emitters. We demonstrate an increase up to 60 times for the rate of spontaneous emission and the gap-plasmon mode changing for nanopatch antenna in the metallic well. The results show the possibility of creating plasmon antennas in a controlled way by creating an array of regularly arranged nanoscale cavities-resonators.
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Al-Mudhafar, Reiam, et Hussein Ali Jawad. « Plasmonic hybrid terahertz photomixer of graphene nanoantenna and nanowires ». International Journal of Electrical and Computer Engineering (IJECE) 12, no 3 (1 juin 2022) : 2711. http://dx.doi.org/10.11591/ijece.v12i3.pp2711-2720.

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Due to their attractive properties, silver nanowires (Ag-NWs) are newly used as nanoelectrodes in continuous wave (CW) THz photomixer. However, since these nanowires have small contact area, the nanowires fill factor in the photomixer active region is low, which leads to reduce the nanowires conductivity. In this work, we proposed to add graphene nanoantenna array as nanoelectrodes to the silver nanowires-based photomixer to improve the conductivity. In addition, the graphene nanoantenna array and the silver nanowires form new hybrid nanoelectrodes for the CW-THz photomixer leading to improve the device conversion efficiency by the plasmonic effect. Two types of graphene nanoantenna array are proposed in two separate photomixer configurations. These are the graphene nanodisk (GND) array and the graphene bow-tie nanoantenna (GNA) array. The photomixer active region is simulated using the computer simulation technology (CST) Studio Suite<sup>®</sup> for three optical wavelengths: 780 nm, 810 nm, and 850 nm. From the results, we found that the electric field in the active region is enhanced by 4.2 and 4.8 times for the aforementioned configurations, respectively. We also showed that the THz output power can be enhanced by 310 and 530 times, respectively.
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7

Ahmed, Hasan, et Viktoriia E. Babicheva. « Nanostructured Tungsten Disulfide WS2 as Mie Scatterers and Nanoantennas ». MRS Advances 5, no 35-36 (2020) : 1819–26. http://dx.doi.org/10.1557/adv.2020.173.

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ABSTRACTNanoparticles of high-refractive-index materials like semiconductors can achieve confinement of light at the subwavelength scale because of the excitation of Mie resonances. The nanostructures out of high-refractive-index materials have extensively been studied theoretically and realized in experiments exploring a wide range of photonic applications. Recently, transition metal dichalcogenides (TMDCs) from the family of van der Waals layered materials have been shown to exhibit tailorable optical properties along with high refractive index and strong anisotropy. We envision that TMDCs are a promising material platform for designing metasurfaces and ultra-thin optical elements: these van der Waals materials show a strong spectral response on light excitations in visible and near-infrared ranges, and metasurface properties can be controlled by nanoantenna dimensions and their arrangement. In this work, we investigate a periodic array of disk-shaped nanoantennas made of a TMDC material, tungsten disulfide WS2, placed on top of a silicon layer and oxide substrate. We show that the nanostructure resonance in TMDC disk-shaped nanoantenna array can be controlled by the variation in silicon layer thickness and have a dependence on the presence of index-match superstrate cover. We also report on the spectral features in absorption and reflection profiles of the same structure with different surrounding index.
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Lin, Dianmin, Aaron L. Holsteen, Elhanan Maguid, Gordon Wetzstein, Pieter G. Kik, Erez Hasman et Mark L. Brongersma. « Photonic Multitasking Interleaved Si Nanoantenna Phased Array ». Nano Letters 16, no 12 (28 novembre 2016) : 7671–76. http://dx.doi.org/10.1021/acs.nanolett.6b03505.

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Damasceno, Gabriel H. B., William O. F. Carvalho et Jorge Ricardo Mejía-Salazar. « Design of Plasmonic Yagi–Uda Nanoantennas for Chip-Scale Optical Wireless Communications ». Sensors 22, no 19 (27 septembre 2022) : 7336. http://dx.doi.org/10.3390/s22197336.

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Optical wireless transmission has recently become a major cutting-edge alternative for on-chip/inter-chip communications with higher transmission speeds and improved power efficiency. Plasmonic nanoantennas, the building blocks of this new nanoscale communication paradigm, require precise design to have directional radiation and improved communication ranges. Particular interest has been paid to plasmonic Yagi–Uda, i.e., the optical analog of the conventional Radio Frequency (RF) Yagi–Uda design, which may allow directional radiation of plasmonic fields. However, in contrast to the RF model, an overall design strategy for the directional and optimized front-to-back ratio of the radiated far-field patterns is lacking. In this work, a guide for the optimized design of Yagi–Uda plasmonic nanoantennas is shown. In particular, five different design conditions are used to study the effects of sizes and spacing between the constituent parts (made of Au). Importantly, it is numerically demonstrated (using the scattered fields) that closely spaced nanoantenna elements are not appropriated for directional light-to-plasmon conversion/radiation. In contrast, if the elements of the nanoantenna are widely spaced, the structure behaves like a one-dimensional array of nanodipoles, producing a funnel-like radiation pattern (not suitable for on-chip wireless optical transmission). Therefore, based on the results here, it can be concluded that the constituent metallic rib lengths must be optimized to exhibit the resonance at the working wavelength, whilst their separations should follow the relation λeff/π, where λeff indicates the effective wavelength scaling for plasmonic nanostructures.
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Hsiao, Yu-Cheng, Chen-Wei Su, Zong-Han Yang, Yevheniia I. Cheypesh, Jhen-Hong Yang, Victor Yu Reshetnyak, Kuo-Ping Chen et Wei Lee. « Electrically active nanoantenna array enabled by varying the molecular orientation of an interfaced liquid crystal ». RSC Advances 6, no 87 (2016) : 84500–84504. http://dx.doi.org/10.1039/c6ra11428h.

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Tapar, Jinal, Saurabh Kishen et Naresh Kumar Emani. « Generalized Kerker effect in PT-symmetric nanoantenna array ». Journal of Optics 24, no 3 (28 janvier 2022) : 034003. http://dx.doi.org/10.1088/2040-8986/ac486f.

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Abstract All-dielectric nanophotonics is a rapidly developing and practical alternative to plasmonics for nanoscale optics. The electric and magnetic Mie resonances in high-index low-loss dielectric nanoresonators can be engineered to exhibit unique scattering responses. Recently, nanophotonic structures satisfying parity-time (PT) symmetry have been shown to exhibit novel scattering responses beyond what can be achieved from the conventional nanoresonators. The complex interference of the magnetic and electric Mie resonances and lattice modes excited in PT-symmetric nanoantenna arrays give rise to a scattering anomaly called lasing spectral singularity (SS), where the scattering coefficients tend to infinity. In our previous work (Tapar, Kishen and Emani 2020 Opt. Lett. 45 5185), we demonstrated the existence of lasing SSs in vertically stacked two-dimensional (2D) GaInP PT-symmetric metasurface. In this paper, we analyse the direction-sensitive scattering response of the PT-symmetric GaInP metasurface by decomposing the total scattered field into the electric and magnetic multipoles. The far-field scattering response at the singularity is highly asymmetric for incidence from either the gain or loss side and can be tuned by changing the geometry. By analysing the phase of even- and odd-parity higher-order multipoles, we explain the observed scattering response over a broad parameter space in terms of the generalized Kerker effect. The interference between the direction-dependent excitation of different order multipoles and the overall 2D-lattice resonance opens a route towards designing a special class of tunable sources exhibiting direction-sensitive emission properties.
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Xu, Yue, Tao Dong, Jingwen He et Qian Wan. « Large scalable and compact hybrid plasmonic nanoantenna array ». Optical Engineering 57, no 08 (1 août 2018) : 1. http://dx.doi.org/10.1117/1.oe.57.8.087101.

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Zhou, Fei, Ye Liu et Weiping Cai. « Plasmonic holographic imaging with V-shaped nanoantenna array ». Optics Express 21, no 4 (12 février 2013) : 4348. http://dx.doi.org/10.1364/oe.21.004348.

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Bakker, Reuben M., Vladimir P. Drachev, Zhengtong Liu, Hsiao-Kuan Yuan, Rasmus H. Pedersen, Alexandra Boltasseva, Jiji Chen, Joseph Irudayaraj, Alexander V. Kildishev et Vladimir M. Shalaev. « Nanoantenna array-induced fluorescence enhancement and reduced lifetimes ». New Journal of Physics 10, no 12 (16 décembre 2008) : 125022. http://dx.doi.org/10.1088/1367-2630/10/12/125022.

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Kim, Ji-Young, Vladimir P. Drachev, Hsiao-Kuan Yuan, Reuben M. Bakker et Vladimir M. Shalaev. « Imaging contrast under aperture tip–nanoantenna array interaction ». Applied Physics B 93, no 1 (28 août 2008) : 189–98. http://dx.doi.org/10.1007/s00340-008-3155-7.

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Kuznetsov, S., M. Konnikova, T. Heinz, E. Dizer, N. Nikolaev, D. Utkin et O. Cherkasova. « Terahertz technology in diagnosis of glioma molecular markers ». Journal of Physics : Conference Series 2316, no 1 (1 août 2022) : 012016. http://dx.doi.org/10.1088/1742-6596/2316/1/012016.

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Abstract Gliomas are invasive brain tumors with high rates of recurrence and mortality. It has been shown that specific markers for glioma’s differential diagnostics are enantiomers of 2-hydroxyglutarate (L-2HG and D-2HG) in brain tissues and blood. These isomers have unique absorption peaks originating from vibrational and rotational transitions in their molecules. In particular, the peaks centered at 1.337 THz and 1.695 THz correspond to L-2HG and D-2HG isomers, respectively. The goal of this work is to develop highly efficient frequency-selective sensors for L-2HG and D-2HG isomers using the effect of nanoantenna-assisted plasmonic enhancement of THz absorption. Such an approach provides a noticeable increase in detection sensitivity versus direct non-resonant methods. In this paper, we present the numerical results of the design optimization for L-2HG and D-2HG sensors based on Si/SiO2-wafer-backed arrays of golden nanoantennas of linear geometry. The optimal structural parameters of the arrays found through integral averaging of the square of the surface electric field over an array unit cell are recommended for further nanolithographic fabrication of this kind of THz sensor.
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Zhang, Cheng, Yonghua Lu, Yuan Ni, Mingzhuo Li, Lei Mao, Chen Liu, Douguo Zhang, Hai Ming et Pei Wang. « Plasmonic Lasing of Nanocavity Embedding in Metallic Nanoantenna Array ». Nano Letters 15, no 2 (29 janvier 2015) : 1382–87. http://dx.doi.org/10.1021/nl504689s.

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Lindfors, Klas, Daniel Dregely, Markus Lippitz, Nader Engheta, Michael Totzeck et Harald Giessen. « Imaging and Steering Unidirectional Emission from Nanoantenna Array Metasurfaces ». ACS Photonics 3, no 2 (2 février 2016) : 286–92. http://dx.doi.org/10.1021/acsphotonics.5b00646.

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Babicheva, Viktoriia E., et Jerome V. Moloney. « Lattice Resonances in Transdimensional WS2 Nanoantenna Arrays ». Applied Sciences 9, no 10 (16 mai 2019) : 2005. http://dx.doi.org/10.3390/app9102005.

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Mie resonances in high-refractive-index nanoparticles have been known for a long time but only recently have they became actively explored for control of light in nanostructures, ultra-thin optical components, and metasurfaces. Silicon nanoparticles have been widely studied mainly because of well-established fabrication technology, and other high-index materials remain overlooked. Transition metal dichalcogenides, such as tungsten or molybdenum disulfides and diselenides, are known as van der Waals materials because of the type of force holding material layers together. Transition metal dichalcogenides possess large permittivity values in visible and infrared spectral ranges and, being patterned, can support well-defined Mie resonances. In this Communication, we show that a periodic array of tungsten disulfide (WS2) nanoantennae can be considered to be transdimensional lattice and supports different multipole resonances, which can be controlled by the lattice period. We show that lattice resonances are excited in the proximity to Rayleigh anomaly and have different spectral changes in response to variations of one or another orthogonal period. WS2 nanoantennae, their clusters, oligomers, and periodic array have the potential to be used in future nanophotonic devices with efficient light control at the nanoscale.
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Ashtiani, Farshid, et Firooz Aflatouni. « Coherent Multilayer Photonic Nanoantenna Array with off-Aperture Phase Adjustment ». ACS Photonics 8, no 12 (22 octobre 2021) : 3433–39. http://dx.doi.org/10.1021/acsphotonics.1c00608.

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Lin, Zhongjin, Yuxuan Chen, Leslie Rusch et Wei Shi. « On-Chip Circular Polarization Splitter Using Silicon Photonic Nanoantenna Array ». ACS Photonics 5, no 11 (17 octobre 2018) : 4338–42. http://dx.doi.org/10.1021/acsphotonics.8b00522.

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Kim, Jun, Naseem Abbas, Seongmin Lee, Jeongwoo Yeom, Md Ali Asgar, Mohsin Ali Badshah, Xun Lu, Young Kyu Kim et Seok-Min Kim. « Fabrication of a Plasmonic Nanoantenna Array Using Metal Deposition on Polymer Nanoimprinted Nanodots for an Enhanced Fluorescence Substrate ». Polymers 13, no 1 (25 décembre 2020) : 48. http://dx.doi.org/10.3390/polym13010048.

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A simple and cost-effective method is proposed herein for a plasmonic nanoantenna array (PNAA) for the fabrication of metal-enhanced fluorescence (MEF) substrates in which fluorophores interact with the enhanced electromagnetic field generated by a localized surface plasmon to provide a higher fluorescence signal. The PNAA is fabricated by the deposition of a silver (Ag) layer on an ultraviolet (UV) nanoimprinted nanodot array with a pitch of 400 nm, diameter of 200 nm, and height of 100 nm. During deposition, raised Ag nanodisks and a lower Ag layer are, respectively, formed on the top and bottom of the imprinted nanodot array, and the gap between these Ag layers acts as a plasmonic nanoantenna. Since the thickness of the gap within the PNAA is influenced by the thickness of Ag deposition, the effects of the latter upon the geometrical properties of the fabricated PNAA are examined, and the electromagnetic field intensity distributions of PNAAs with various Ag thicknesses are simulated. Finally, the fluorescence enhancement factor (FEF) of the fabricated PNAA MEF substrate is measured using spotted Cy5-conjugated streptavidin to indicate a maximum enhancement factor of ~22× for the PNAA with an Ag layer thickness of 75 nm. The experimental results are shown to match the simulated results.
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Nia, Behzad Ashrafi, Leila Yousefi et Mahmoud Shahabadi. « Integrated Optical-Phased Array Nanoantenna System Using a Plasmonic Rotman Lens ». Journal of Lightwave Technology 34, no 9 (1 mai 2016) : 2118–26. http://dx.doi.org/10.1109/jlt.2016.2520881.

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Mitrofanov, Oleg, Igal Brener, Ting Shan Luk et John L. Reno. « Photoconductive Terahertz Near-Field Detector with a Hybrid Nanoantenna Array Cavity ». ACS Photonics 2, no 12 (décembre 2015) : 1763–68. http://dx.doi.org/10.1021/acsphotonics.5b00475.

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Huang, Haiyang, Hao Li, Wei Li, Aimin Wu, Xin Chen, Xuefeng Zhu, Zhen Sheng, Shichang Zou, Xi Wang et Fuwan Gan. « High-Efficiency Vertical Light Emission through a Compact Silicon Nanoantenna Array ». ACS Photonics 3, no 3 (22 février 2016) : 324–28. http://dx.doi.org/10.1021/acsphotonics.5b00641.

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Mironov, Evgeny G., Abdul Khaleque, Liming Liu, Ivan S. Maksymov et Haroldo T. Hattori. « Enhancing Weak Optical Signals Using a Plasmonic Yagi—Uda Nanoantenna Array ». IEEE Photonics Technology Letters 26, no 22 (15 novembre 2014) : 2236–39. http://dx.doi.org/10.1109/lpt.2014.2352339.

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Zhang, Zhen, Bingpu Zhou, Yingzhou Huang, Zhongwei Liao, Zhipeng Li, Shunbo Li, Shuxia Wang et Weijia Wen. « Gold crescent nanodisk array for nanoantenna-enhanced sensing in subwavelength areas ». Applied Optics 53, no 31 (22 octobre 2014) : 7236. http://dx.doi.org/10.1364/ao.53.007236.

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Verma, Sneha, et B. M. A. Rahman. « Advanced refractive index sensor using 3-dimensional metamaterial based nanoantenna array ». Journal of Physics : Conference Series 2407, no 1 (1 décembre 2022) : 012054. http://dx.doi.org/10.1088/1742-6596/2407/1/012054.

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Abstract Photonic researchers have increasingly exploiting nanotechnology. Due to the advent of numerous prevalent nanosized manufacturing methods that enable adequate shaped nanostructures to be manufactured and investigated as a method of exploiting nano-structured. Owing of the variety of optical modes, hybrid nanostructures that integrate dielectric resonators with plasmonic nanostructures also offer enormous potentials. In this work, we have explored a hybrid coupled nano-structured antenna with stacked lithium tantalate (LiTaO3)/Aluminium oxide (Al2O3) multilayer operating at infrared ranging from 400 nm-2000 nm. Here, the sensitivity response has been explored of the hybrid nano-structured array made up of the gold metal elliptical disk placed on the top of a quartz substrate and excite the different modes in both materials. It shows large electromagnetic confinement at the separation distance (d) of the dimers due to strong surface plasmon resonance (SPR). The influence of the structural dimensions is investigated to optimise the sensitivity of stacked elliptical dimers. The designed hybrid coupled nano-structure with the combination of gold (Au) and Lithium tantalate (LiTaO3) /Aluminium oxide (Al2O3) with h 1 = h 2 = 10 nm each 10 layer exhibits bulk sensitivity (S), which is the spectrum shift unit per refractive index (RI) change in the surrounding medium was calculated to be 730 and 660 nm/RIU with major axis, (a) = 100 nm, minor axis, (b) = 10 nm, separation distance (d) = 10 nm, height, (h) = 100 nm (with or without stacked). The outcomes from the proposed hybrid nanostructure have been compared with a single metallic (only gold) elliptical paired nano-structure to show a significant improvement in the sensitivity using hybrid nano-structure. Depending on these findings, we demonstrated a roughly two-fold increase in sensitivity (S) by utilising a hybrid nano linked nano-structure with respect to identical nano structure, which competes with traditional sensors with the same height, (h) based on localised surface plasmon resonances. Our innovative plasmonic hybrid nanostructures provide a framework for developing plasmonic nanostructures for use in various sensing applications.
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Hayat, Qaisar, Junping Geng, Xianling Liang, Ronghong Jin, Sami Ur Rehman, Chong He, Haobo Wu et Hamza Nawaz. « Core-Shell Nano-Antenna Configurations for Array Formation with More Stability Having Conventional and Non-Conventional Directivity and Propagation Behavior ». Nanomaterials 11, no 1 (4 janvier 2021) : 99. http://dx.doi.org/10.3390/nano11010099.

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The enhancement of optical characteristics at optical frequencies deviates with the choice of the arrangement of core-shell nanoparticles and their environment. Likewise, the arrangements of core-shell nanoparticles in the air over a substrate or in liquid solution makes them unstable in the atmosphere. This article suggests designing a configuration of an active spherical coated nanoparticle antenna and its extended array in the presence of a passive dielectric, which is proposed to be extendable to construct larger arrays. The issue of instability in the core-shell nanoantenna array models is solved here by inserting the passive dielectric. In addition to this, the inclusion of a dielectric in the array model reports a different directivity behaviour than the conventional array models. We found at first that the combination model of the active coated nanoparticle and passive sphere at the resonant frequency can excite a stronger field with a rotated polarization direction and a propagation direction different from the incident plane-wave. Furthermore, the extended 2D array also rotates the polarization direction and propagation direction for the vertical incident plane-wave. The radiation beam operates strong multipoles in the 2D array plane at resonant frequency (behaving non-conventionally). Nevertheless, it forms a clear main beam in the incident direction when it deviates from the resonance frequency (behaving conventionally). The proposed array model may have possible applications in nano-amplifiers, nano-sensors and other integrated optics.
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Slyusar, V. I., et D. V. Slyusar. « The design concept of nanoantenna arrays in as part of mimo wireless networks nanocircuits on a chip ». Electronics and Communications 16, no 4 (31 mars 2011) : 37–39. http://dx.doi.org/10.20535/2312-1807.2011.16.4.243713.

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In this paper the conceptual basics of construction design of nanoantennas array as a part of multilayered nanonodes for realisation of wireless networks on the chip (WiNoC) on the basis of technologies MIMO and MultiUser MIMO are presented
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Wang Han, 王晗, 臧昊峰 Zang Haofeng, 鲁拥华 Lu Yonghua et 王沛 Wang Pei. « Mode Properties and Fluorescence Emission Mediation of Metal-Dielectric-Metal Nanoantenna Array ». Acta Optica Sinica 40, no 4 (2020) : 0426001. http://dx.doi.org/10.3788/aos202040.0426001.

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Colombelli, Adriano, Daniela Lospinoso, Antonietta Taurino et Maria Grazia Manera. « Tailoring a periodic metal nanoantenna array using low cost template-assisted lithography ». Journal of Materials Chemistry C 7, no 44 (2019) : 13818–28. http://dx.doi.org/10.1039/c9tc03701b.

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Tailoring the optical response of metal nanoparticles by controlling their morphology is a key topic in the field of nano-optics. Here, a simple approach for the fabrication of tunable plasmonic nanostructures by nanosphere lithography is presented.
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Davies, D. G., D. M. Whittaker et L. R. Wilson. « Hybrid gold nanoantenna array—Dielectric thin film anti-reflection coatings on GaAs ». Solid State Communications 152, no 24 (décembre 2012) : 2156–59. http://dx.doi.org/10.1016/j.ssc.2012.09.016.

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Yerchak, Yauhen, Gregory Y. Slepyan, Sergey A. Maksimenko, Axel Hoffmann et Fridrikh Bass. « Array of tunneling-coupled quantum dots as a terahertz range quantum nanoantenna ». Journal of Nanophotonics 7, no 1 (28 août 2013) : 073085. http://dx.doi.org/10.1117/1.jnp.7.073085.

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Liu, Lin, Landobasa Y. M. Tobing, Xuechao Yu, Jinchao Tong, Bo Qiang, Antonio I. Fernández‐Domínguez, Francisco J. Garcia‐Vidal, Dao Hua Zhang, Qi Jie Wang et Yu Luo. « Strong Plasmon–Exciton Interactions on Nanoantenna Array–Monolayer WS 2 Hybrid System ». Advanced Optical Materials 8, no 5 (23 septembre 2019) : 1901002. http://dx.doi.org/10.1002/adom.201901002.

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Mohan, Anand. « DIELECTRIC OPTICAL ANTENNA : A NEW CONCEPT FOR MICROWAVE FREQUENCIES ». Information Management and Computer Science 3, no 2 (7 décembre 2020) : 27–29. http://dx.doi.org/10.26480/imcs.02.2020.27.29.

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The dielectric optical antenna operating band is used to enhance bandwidth of operation band. The dielectric resonator antenna has high permittivity. The capabilities of antenna depend on made-up materials. Antenna range plays very important role for transmission of radio-signals. The properties of antenna play very important role in any technical or communicational devices. Current communication system requires high level portable communicational devices. Nanoantenna has high level configurable conductor power to help to change specific feature. Optical antenna has great capability to connect one network another network . The specific feature of optical antenna moving around development of our life to give convenient life. Only advanced generation technology has power to change our simple life to advanced technological life. In this research paper we have introduced new technical idea to develop our brain to gain high level efficiency to controlled our system with helps of antenna full usability for human being .The antenna characteristics depends on permittivity , dimension, properties limiting factors, geometrical properties, shape, model, wavelength scale and intensity of antenna aperture wavelength, which incident radiation relates to its design . In this paper we apply maxwell equations for free space propagation, as well as solve its amplitude of phase future plasmonic integrated circuits will be capable to extremely high range data processing at optical domain, the optical frequencies will be controlled by efficient optical emission of plasmonic antenna. In this project the new concept of microwave range arrays is applied to convert plasmonic optical antenna array, with nano-coupled plasmonic wave guide, as a spatial filter to absorb a specific wave length at particular specified incident angle. Nanoantenna transmits optical signals on nanometre scale. Optical nanoantenna are expected to radiate in THZ or GHZ frequency range. Optical DRA antenna has very unique and key application for such types of device based configuration .The optical DRA –antenna has unique spectral ability to optimize as well as design in nanometre scale.
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Sabri, Raana, Ali Pourziad et Saeid Nikmehr. « Highly directive switchable nanoantenna array based on dielectric omega particles at terahertz frequencies ». Applied Optics 57, no 9 (20 mars 2018) : 2292. http://dx.doi.org/10.1364/ao.57.002292.

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Sinev, Ivan S., Pavel M. Voroshilov, Ivan S. Mukhin, Andrey I. Denisyuk, Mikhail E. Guzhva, Anton K. Samusev, Pavel A. Belov et Constantin R. Simovski. « Demonstration of unusual nanoantenna array modes through direct reconstruction of the near-field signal ». Nanoscale 7, no 2 (2015) : 765–70. http://dx.doi.org/10.1039/c4nr04872e.

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Lee, Bumsu, Joohee Park, Gang Hee Han, Ho-Seok Ee, Carl H. Naylor, Wenjing Liu, A. T. Charlie Johnson et Ritesh Agarwal. « Fano Resonance and Spectrally Modified Photoluminescence Enhancement in Monolayer MoS2Integrated with Plasmonic Nanoantenna Array ». Nano Letters 15, no 5 (mai 2015) : 3646–53. http://dx.doi.org/10.1021/acs.nanolett.5b01563.

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Butet, Jérémy, et Olivier J. F. Martin. « Manipulating the Optical Bistability in a Nonlinear Plasmonic Nanoantenna Array with a Reflecting Surface ». Plasmonics 10, no 1 (12 septembre 2014) : 203–9. http://dx.doi.org/10.1007/s11468-014-9794-0.

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Verma, Sneha, et B. M. A. Rahman. « Computational Investigation of Advanced Refractive Index Sensor Using 3-Dimensional Metamaterial Based Nanoantenna Array ». Sensors 23, no 3 (23 janvier 2023) : 1290. http://dx.doi.org/10.3390/s23031290.

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Photonic researchers are increasingly exploiting nanotechnology due to the development of numerous prevalent nanosized manufacturing technologies, which has enabled novel shape-optimized nanostructures to be manufactured and investigated. Hybrid nanostructures that integrate dielectric resonators with plasmonic nanostructures are also offering new opportunities. In this work, we have explored a hybrid coupled nano-structured antenna with stacked multilayer lithium tantalate (LiTaO3) and Aluminum oxide (Al2O3), operating at wavelength ranging from 400 nm to 2000 nm. Here, the sensitivity response has been explored of these nano-structured hybrid arrays. It shows a strong electromagnetic confinement in the separation gap (g) of the dimers due to strong surface plasmon resonance (SPR). The influences of the structural dimensions have been investigated to optimize the sensitivity. The designed hybrid coupled nanostructure with the combination of 10 layers of gold (Au) and Lithium tantalate (LiTaO3) or Aluminum oxide (Al2O3) (five layers each) having height, h1 = h2 = 10 nm exhibits 730 and 660 nm/RIU sensitivity, respectively. The sensitivity of the proposed hybrid nanostructure has been compared with a single metallic (only gold) elliptical paired nanostructure. Depending on these findings, we demonstrated that a roughly two-fold increase in the sensitivity (S) can be obtained by utilizing a hybrid coupled nanostructure compared to an identical nanostructure, which competes with traditional sensors of the same height, (h). Our innovative novel plasmonic hybrid nanostructures provide a framework for developing plasmonic nanostructures for use in various sensing applications.
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Shams Mousavi, S. Hamed, Robert Lemasters, Feng Wang, Ali Eshaghian Dorche, Hossein Taheri, Ali A. Eftekhar, Hayk Harutyunyan et Ali Adibi. « Phase-matched nonlinear second-harmonic generation in plasmonic metasurfaces ». Nanophotonics 8, no 4 (7 février 2019) : 607–12. http://dx.doi.org/10.1515/nanoph-2018-0181.

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AbstractThe phase matching between the propagating fundamental and nonlinearly generated waves plays an important role in the efficiency of the nonlinear frequency conversion in macroscopic crystals. However, in nanoscale samples, such as nanoplasmonic structures, the phase-matching condition is often ignored due to the sub-wavelength nature of the materials. Here, we first show that the phase matching of the lattice plasmon modes at the fundamental and second-harmonic frequencies in a plasmonic nanoantenna array can effectively enhance the surface-enhanced second-harmonic generation. Additionally, a significant enhancement of the second-harmonic generation is demonstrated using stationary band-edge lattice plasmon modes with zero phase.
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Li, Wenjia, Jianlong Liu, Yang Gao, Keya Zhou et Shutian Liu. « Unidirectional excitation of waveguide mode by optical spin–orbit couplings with on-chip nanoantenna array ». Journal of Physics D : Applied Physics 53, no 2 (31 octobre 2019) : 025110. http://dx.doi.org/10.1088/1361-6463/ab4d66.

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Chang, Te-Wei, Manas Ranjan Gartia, Sujin Seo, Austin Hsiao et Gang Logan Liu. « A wafer-scale backplane-assisted resonating nanoantenna array SERS device created by tunable thermal dewetting nanofabrication ». Nanotechnology 25, no 14 (14 mars 2014) : 145304. http://dx.doi.org/10.1088/0957-4484/25/14/145304.

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Hasan, Dihan, Chong Pei Ho, Prakash Pitchappa et Chengkuo Lee. « Dipolar Resonance Enhancement and Magnetic Resonance in Cross-Coupled Bow-Tie Nanoantenna Array by Plasmonic Cavity ». ACS Photonics 2, no 7 (19 juin 2015) : 890–98. http://dx.doi.org/10.1021/acsphotonics.5b00088.

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Hu, Chih-Chan, Wayne Yang, Yao-Tsung Tsai et Yuan-Fong Chau. « Gap enhancement and transmittance spectra of a periodic bowtie nanoantenna array buried in a silica substrate ». Optics Communications 324 (août 2014) : 227–33. http://dx.doi.org/10.1016/j.optcom.2014.03.062.

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Gilan, Maryam Shirzadian, Jalil Rashed-Mohassel, Mohammad Naser-Moghaddasi et Mehdi Khatir. « Log-Periodic Dipole Nanoantenna Array Based on Substrate Integrated Waveguide for Wireless Communications in Terahertz Band ». Plasmonics 14, no 6 (18 juillet 2019) : 1955–61. http://dx.doi.org/10.1007/s11468-019-00983-0.

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Ergul, O., G. Isiklar, I. C. Cetin et M. Algun. « Design and Analysis of Nanoantenna Arrays for Imaging and Sensing Applications at Optical Frequencies ». Advanced Electromagnetics 8, no 2 (25 février 2019) : 18–27. http://dx.doi.org/10.7716/aem.v8i2.1010.

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We present computational analysis of nanoantenna arrays for imaging and sensing applications at optical frequencies. Arrays of metallic nanoantennas are considered in an accurate simulation environment based on surface integral equations and the multilevel fast multipole algorithm developed for plasmonic structures. Near-zone responses of the designed arrays to nearby nanoparticles are investigated in detail to demonstrate the feasibility of detection. We show that both metallic and dielectric nanoparticles, even with subwavelength dimensions, can be detected.
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Wang, Kuidong, Minghao Li, Hui-Hsin Hsiao, Fengling Zhang, Marcus Seidel, Ai-Yin Liu, Jie Chen, Eloïse Devaux, Cyriaque Genet et Thomas Ebbesen. « High Contrast, Femtosecond Light Polarization Manipulation in Epsilon-near-Zero Material Coupled to a Plasmonic Nanoantenna Array ». ACS Photonics 8, no 9 (6 septembre 2021) : 2791–99. http://dx.doi.org/10.1021/acsphotonics.1c00971.

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Anam, Mohamad Khoirul, et Sangjo Choi. « Bowtie Nanoantenna Array Integrated With Artificial Impedance Surfaces for Realizing High Field Enhancement and Perfect Absorption Simultaneously ». IEEE Access 8 (2020) : 99858–69. http://dx.doi.org/10.1109/access.2020.2997680.

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