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Fabrication and tuning of plasmonic optical nanoantennas around droplet epitaxy quantum dots by cathodoluminescence
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10.1063/1.4809831
/content/aip/journal/apl/102/23/10.1063/1.4809831
http://aip.metastore.ingenta.com/content/aip/journal/apl/102/23/10.1063/1.4809831
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Figures

Image of FIG. 1.
FIG. 1.

Simultaneously recorded images of (a) the SEM signal of the Au alignment marks deposited on the sample and (b) the CL signal of the droplet epitaxy quantum dots ( ). (c) Cut and (d) top field effect SEM microphotograph of the target QD/nanoantenna assembly;  = 50 nm, gap 100 nm,  = 100 nm,  = 35 nm, varies from 80 to 350 nm. (e) Composite image of the fabricated Au nanoantennas observed in SEM (black channel) and of the QD spots (red channel).

Image of FIG. 2.
FIG. 2.

(a) Scatter plot of the QD positions measured by CL with respect to the nanoantenna center. The position of the strips is shown by yellow rectangles. (b) Histogram of QDs' distance distribution from antenna center. (c) Luminescence enhancement ratio as a function of antenna length . Experimental points are compared to numerical simulations assuming a random distribution of dipole orientations

Image of FIG. 3.
FIG. 3.

(a) Simulated enhancement factors as a function of antenna length for a quantum dot corresponding to an oscillating dipole along the parallel (), perpendicular (), or vertical () direction. Maps of in the () plane for a parallel dipole (b–d) and a vertical dipole (f–g) for different antenna lengths. The corresponding points are shown in figure (a) except for (e).

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/content/aip/journal/apl/102/23/10.1063/1.4809831
2013-06-11
2014-04-18
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752b84549af89a08dbdd7fdb8b9568b5 journal.articlezxybnytfddd
Scitation: Fabrication and tuning of plasmonic optical nanoantennas around droplet epitaxy quantum dots by cathodoluminescence
http://aip.metastore.ingenta.com/content/aip/journal/apl/102/23/10.1063/1.4809831
10.1063/1.4809831
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