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[IEEE 2019 IEEE International Symposium on Antennas and Propagation and USNC-URSI Radio Science Meeting - Atlanta, GA, USA (2019.7.7-2019.7.12)] 2019 IEEE International Symposium on Antennas and Propagation and USNC-URSI Radio Science Meeting - E-shaped Nano-antenna with Asymmetric Integrated Dielectric-plasmonic Waveguide
摘要： In this paper, a novel design of end-fire nano-antenna is introduced with higher directivity compared with previous works. To feed the designed nano-antenna by low loss dielectric waveguide, integrated dielectric-plasmonic waveguide is designed and by directional nano-particles inside the waveguide, directivity of the nano-antenna increases.
关键词： directional nano-particles,nano-antenna,integrated dielectric-plasmonic waveguide
更新于2025-09-16 10:30:52
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[IEEE 2019 International Engineering Conference (IEC) - Erbil, Iraq (2019.6.23-2019.6.25)] 2019 International Engineering Conference (IEC) - Assessment of Specific Absorption Rate and Temperature in the Tumor Tissue Subjected to Plasmonic Bow-Tie Optical Nano-Antenna
摘要： Potential research works are done to design different structures of antennas in various dimensions and shapes at Terahertz frequency, but the nano-antenna in optical frequency is a challenge. This paper presents the design and analysis of plasmonic bow-tie optical nano-antenna for tumor treatment. The designed structure is constructed from Gold and SiO2 materials in a bow-tie shape. The simulation work is performed using Computer Simulation Technology (CST) studio suite software package version 2019. The resonance wavelength of the designed structure is 532 nm, which represents the resonance of the gold. The waveguide exciting source is used to get maximum absorption resonance reflectivity) wavelength. The near and far field in the nano-antenna are taken into account. The maximum intensity from the plasmonic nano-antenna is obtained to be 8.77 *1010 W/m2 at the resonance wavelength at a distance from the reference plane of 1 μm. The results showed that the absorbed power by the proposed tissue represented by the specific absorption rate (point SAR) is 6.94*1012 W/kg when the position of the proposed tumor in touch with upper edge and in front of the nano-antenna. The temperature distribution is calculated to be 64 Co in the proposed tumor. It is concluded that the obtained specific absorption rate and the calculated temperature in the designed nano-antenna at 532 nm are encouraged to use as a point source for the treatment of tumor tissue.
关键词： Plasmonics,Bow-Tie,Temperature,SAR,Optical Nano-Antenna,Tumor
更新于2025-09-16 10:30:52
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[IEEE 2019 IEEE SENSORS - Montreal, QC, Canada (2019.10.27-2019.10.30)] 2019 IEEE SENSORS - Power Coupling and Modal Analysis of SPR based Gap Waveguides for Optical Sensing Applications
摘要： In this work, the modal analysis and power coupling analysis of gap plasmon waveguides for use in optical sensing applications is presented. The structure consists of Silver (Ag) metallic waveguides separated by a very small gap distance in the range of less than 100nm on glass substrate. The power coupling analysis is carried out at 1550nm for variations in numerical aperture (NA) of optical source. The modes are coupled to the air gap and results in 4.8% to 12.17% of optical power coupling by using high numerical aperture optical beam.
关键词： Gap-waveguides,Plasmons,Surface plasmon resonance (SPR),Nano-antenna,power coupling
更新于2025-09-16 10:30:52
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High gain and wideband on-chip hybrid plasmonic V-shaped nano-antenna
摘要： In this paper, a wideband hybrid plasmonic V-shaped nano-antenna is proposed based on coupled hybrid plasmonic waveguide (CHPW) feeding to increase the surface plasmons propagation length. The CHPW specifications are investigated analytically and numerically to obtain the dispersion relation and propagation length by the genetic algorithm and finite element method, respectively. Moreover, the proposed V-shaped nano-antenna with the fractional bandwidth of ～86% and the maximum ef?ciency of 98% is able to receive/transmit optical signals at three telecommunication wavelengths of 850, 1310, and 1550 nm with the high realized gains of 10.5, 9.39, 9.05 dB, respectively. The shape of the radiation pattern, with a main lobe along the antenna axis, makes this antenna appropriate for point-to-point connections in inter- or intra-chip optical wireless links and networks, which is studied comprehensively in this paper. Furthermore, to obtain a high optical power signal and tune the antenna orientation, the performance of the antenna is investigated with two different types of array structure, single row and square and its applications for energy harvesting and beam steering are studied. The fabrication feasibility of the nano-antenna is realizable based on the complementary metal-oxide-semiconductor technology.
关键词： Energy harvesting,Optical nano-antenna,Wireless interconnection link,Coupled hybrid plasmonic waveguide
更新于2025-09-16 10:30:52
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Input Impedance and Efficiency Analysis of Graphene-Based Plasmonic Nanoantenna Using Theory of Characteristic Modes
摘要： In this letter, the input impedance and radiation efficiency analysis of graphene-based plasmonic nano-antenna (GPNA) is presented utilizing the theory of characteristic mode (CM). The total input impedance and radiation efficiency values at various feed positions are accurately and efficiently obtained as the superposition of natural characteristic modes. Furthermore, the modal input impedances and the radiation efficiencies are also provided for in-depth understanding of the GPNA. This work provides a new perspective to analyze the GPNA and can be easily applied to the design and optimization of other lossy plasmonic antennas with complicated geometries.
关键词： input impedance,nano-antenna,characteristic mode (CM),plasmonic,graphene
更新于2025-09-11 14:15:04
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[IEEE 2019 IEEE Photonics Conference (IPC) - San Antonio, TX, USA (2019.9.29-2019.10.3)] 2019 IEEE Photonics Conference (IPC) - Enhanced Subwavelength Coupling and Nanofocusing with Fiber-Plasmonic Hybrid Probe
摘要： Metallic nanowires supporting surface plasmon polaritons can localize optical fields at nanoscale for near-field imaging. In this paper, we propose a photonic-plasmonic probe for nanoscale light confinement. The linearly polarized fiber mode is asymmetrically coupled to radial plasmons to create hot-spot at the tip apex.
关键词： nano-antenna,surface plasmon polaritons,optical fiber,near-field microscopy,mode conversion
更新于2025-09-11 14:15:04
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[IEEE NAECON 2018 - IEEE National Aerospace and Electronics Conference - Dayton, OH, USA (2018.7.23-2018.7.26)] NAECON 2018 - IEEE National Aerospace and Electronics Conference - Indium Tin Oxide/Barium Strontium Titanate THz Sensor Antenna
摘要： A Bow-Tie ITO/BST and Au/BST antennas were designed and analyzed using the finite element, Multiphysics COMSOLTM program. The study shows that the outputs peak at several modes and ITO antennas allow for the integration of the antenna with optoelectronic devices.
关键词： COMSOL FEM Modelling,THz,Nano-Antenna
更新于2025-09-04 15:30:14