Beilstein J. Nanotechnol.2018,9, 2188–2197, doi:10.3762/bjnano.9.205
likely caused by distinct deviations of the gap geometry arising from the faceted structure of the applied colloidal AuNPs.
Keywords: atomistic plasmonics; dumbbelldimerantennas; electromagnetic field enhancement; light confinement; nanolens; nanoscale morphology; Introduction
The introduction of the
, DNA origami-structures provide a high versatility of the formed structures, however, the gap sizes on the sub-nanometer scale are difficult to control. Recently, we succeeded in the formation of dumbbelldimerantennas by means of the electrostatic interaction of positively charged 40 nm AuNPs and
limits its applicability [51][52].
Results and Discussion
Fabrication of dumbbelldimerantennas with sub-nanometer gap size
In this study, we modify the previously established protocol of the formation of tip-supported dimer and trimer antennas by replacing the dithiol linker molecules with a rigid
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Figure 1:
Tip-supported dumbbell antenna. (a) Calculated electromagnetic field distribution of a 80–40 nm AuN...