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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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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