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plasmonic metamaterial absorbers from dense gold nanoparticle stacks
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نویسنده
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hewlett sheldon ,mock adam
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منبع
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plasmonics - 2017 - دوره : 12 - شماره : 2 - صفحه:419 -425
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چکیده
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Gold nanoparticle solutions were used to make highly absorbing, dense nanoparticle stacks (dnps) using a simple and inexpensive solution cast method. uv-vis spectroscopy and reflection measurements were used to characterize absorption. the critical nanoparticle number necessary to obtain maximal absorption was determined for each sample. dnps metamaterials made from 18- and 44-nm-diameter particles exhibited broadband absorbances above 80 %, with the highest absorption of 95 % at 532 nm. the experimental absorption results agree well with finite-difference time-domain (fdtd) modeling.
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کلیدواژه
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metamaterial absorbers ,gold ,disordered plasmonics
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آدرس
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central michigan university, school of engineering and technology, science of advanced materials program, usa, central michigan university, school of engineering and technology, science of advanced materials program, usa
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Authors
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