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optimization design of a multi-slot nanoantenna based on genetic algorithm for energy harvesting
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نویسنده
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liu yuanyuan ,li kangkang ,cao sainan ,xiong guang ,zhu lu
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منبع
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plasmonics - 2019 - دوره : 14 - شماره : 6 - صفحه:1577 -1586
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چکیده
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A new genetic algorithm (ga)-based multi-slot nanoantenna is proposed for energy harvesting, which consists of two element nanoantennas with rectangular shape and with double bowtie double ring (dbdr) slot. the dbdr slot structure can enhance the electric field to increase the absorptivity of nanoantennas; however, the larger parameter space of multi-slot is more hardly controlled. therefore, we use ga to optimize the parameters of the dbdr slot nanoantenna and the finite-difference time-domain method to calculate the absorptivity. it is found that absorptivity of the optimized nanoantenna is over 77% in 400–1800 nm waveband. we attribute the better absorbing property of the nanoantenna to the synergistic effect of the localized surface plasmon resonance enhancement and coupling between slots.
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کلیدواژه
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surface plasmons ,absorption ,subwavelength structures ,nanostructures ,solar energy
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آدرس
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east china jiaotong university, school of information engineering, china, east china jiaotong university, school of information engineering, china, east china jiaotong university, school of information engineering, china, east china jiaotong university, school of information engineering, china, east china jiaotong university, school of information engineering, china
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Authors
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