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app:nanoantenna [2018/01/30 16:45] pklapetek |
app:nanoantenna [2018/08/28 22:39] (current) pklapetek |
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| - | A result of a calculation of local field enhancement in neigborhood of a single rod of different length is show below (left) for wavelengths from 600 to 1300 nm. We can see that the field enhancement maximum strongly depends on length of the rod which was expected. In the right image, a result of spectral dependence of field enhancement between two rods is calculated for four different values of substrate permittivity for spectral range from 600 to 1300 nm. We can see that the substrate shifts the maximum to longer wavelengths which is also known from the literature. | + | A result of a calculation of local field enhancement in neigborhood of a single rod of different length is show below (top image) for wavelengths from 600 to 1300 nm. We can see that the field enhancement maximum strongly depends on length of the rod which was expected. In the bottom image, a result of spectral dependence of field enhancement between two rods is calculated for four different values of substrate permittivity for spectral range from 600 to 1300 nm. We can see that the substrate shifts the maximum to longer wavelengths which is also known from the literature. |
| - | {{:app:f_plasmonic_single.png?400|}} | + | {{ :app:f_plasmonic_single.png?500 |}} |
| - | {{ :app:f_plasmonic_dual.png?400|}} | + | {{ :app:f_plasmonic_dual.png?500 |}} |
| + | {{ :app:f_plasmonic_tribit_ss.png?100|}} | ||
| + | Similar results can be obtained for two triangular metallic objects used as nanoantenna (see the simulation snapshot in the right figure). The objects have triangular base shape, but they are formed by layer of uniform thickness, so they can be prepared e.g. by some litography technique. Here a spectral dependence of the field enhancement between the objects is shown for two different sizes of the whole system (l: total length, g: gap width) for wavelengths from 300 to 1300 nm. | ||
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| + | {{ :app:f_plasmonic_tribit.png?500 |}} | ||
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| + | ---- | ||
| + | // | ||
| + | {{ :app:img_metal_rod.png?120|}} | ||
| + | Sample parameter file: {{app:metal_rod.tar.gz|metallic nanorod}}. | ||
| + | \\ | ||
| + | A simulation of a metallic nanorod illuminated by a plane wave. | ||
| + | // | ||
| + | ---- | ||
| - | Similar results can be obtained for two triangular metallic objects used as nanoantenna (see the simulation snapshot in bottom right figure). Here a spectral dependence of the field enhancement between the objects is shown for two different sizes of the whole system (l: total length, g: gap width) for wavelengths from 300 to 1300 nm. | ||
| - | {{:app:f_plasmonic_tribit.png?400|}} | ||
| - | {{ :app:f_plasmonic_tribit_ss.png?400|}} | ||
app/nanoantenna.1517327121.txt.gz · Last modified: 2018/01/30 16:45 by pklapetek
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