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tunable ultrahigh order surface plasmonic resonance in multi-ring plasmonic nanocavities
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نویسنده
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zhang mingdi ,li caixia ,wang chi ,wang tiankun ,zhang tingting ,zheng hairong
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منبع
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plasmonics - 2017 - دوره : 12 - شماره : 6 - صفحه:1773 -1779
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چکیده
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Optical properties of multi-ring with spatial symmetry breaking are investigated theoretically. tunable ultrahigh order surface plasmonic resonance is achieved, which is found to be sensitive to geometric parameters. certain high-order surface plasmonic resonances can be either suppressed or enhanced when geometrical parameters are adjusted. moreover, more than one quadrupolar-dipolar, octupolar-dipolar, and hexadecapolar-dipolar mode of the surface plasmonic resonance can be achieved. the asymmetry also allows the generation of strong electric field enhancement with these nanostructures that can be applied in the field of surface-enhanced spectroscopy and biosensing.
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کلیدواژه
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surface plasmon resonance ,multi-ring plasmonic nanocavities ,surface-enhanced spectroscopy
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آدرس
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shaanxi normal university, school of physics and information technology, china, shaanxi normal university, school of physics and information technology, china, shaanxi normal university, school of physics and information technology, china, shaanxi normal university, school of physics and information technology, china, shaanxi normal university, school of physics and information technology, china, shaanxi normal university, school of physics and information technology, china
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Authors
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