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optical properties and local electromagnetic field enhancement of periodic rectangular nanohole arrays in au-interlayer-au multilayer films
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نویسنده
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yi zao ,liu miao ,luo jiangshan ,xu xibin ,zhang weibin ,yi yong ,duan tao ,wang chaoyang ,tang yongjian
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منبع
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plasmonics - 2017 - دوره : 12 - شماره : 6 - صفحه:1929 -1937
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چکیده
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The optical properties and the local electromagnetic field enhancement of a compound structure with rectangular nanohole arrays in au-interlayer-au multilayer films are numerically studied using finite-difference time domain method. we investigated some of structure parameters that influence the optical properties of the compound nanostructure. adjustment of the length of rectangular nanoholes (l), the polarization direction (θ), the thickness of interlayer (sio2, h2), and the materials in the interlayer can change the absorption intensity and the resonance peaks. an interlayer is located between the double au films (au-interlayer-au multilayer films) with the function of confining local electromagnetic field. the simulation of the electromagnetic field distribution shows that the location of the local electromagnetic field enhancement can specify the different resonance patterns. the proposed compound nanostructure will be promising for application in portable nanoplasmonic multisensing and imaging.
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کلیدواژه
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rectangular nanoholes arrays ,au-interlayer-au multilayer films ,surface plasmons ,finite-difference time-domain method
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آدرس
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southwest university of science and technology, co-innovation center for energetic materials, joint laboratory for extreme conditions matter properties, china, china academy of engineering physics, research center of laser fusion, china, china academy of engineering physics, research center of laser fusion, china, china academy of engineering physics, research center of laser fusion, china, dongguk university, department of physics, south korea, southwest university of science and technology, co-innovation center for energetic materials, joint laboratory for extreme conditions matter properties, china, southwest university of science and technology, co-innovation center for energetic materials, joint laboratory for extreme conditions matter properties, china, china academy of engineering physics, research center of laser fusion, china, southwest university of science and technology, co-innovation center for energetic materials, joint laboratory for extreme conditions matter properties, china. china academy of engineering physics, research center of laser fusion, china
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Authors
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