Journal
NANOTECHNOLOGY
Volume 20, Issue 42, Pages -Publisher
IOP PUBLISHING LTD
DOI: 10.1088/0957-4484/20/42/425203
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Funding
- Deutsche Forschungsgemeinschaft (DFG) [DFG EI 442/3-1]
- DFG Heisenberg Excellence Fellowship
- Karlsruhe School of Optics Photonics
- Studienstiftung des deutschen Volkes
- DFG Heisenberg Group Nanoscale Science at the Light Technology Institute (LTI)
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In this paper we present our approach for engineering gold dipole nanoantennas. Using electron-beam lithography we have been able to produce arrays of single gold antennas with dimensions from 70 to 300 nm total length with a highly reproducible nanoengineering protocol. Characterizing these gold nanoantenna architectures by optical means via dark-field microscopy and scattering spectroscopy gives the linear optical response function as a figure-of-merit for the antenna resonances, spectral linewidth and integrated scattering intensity. We observe an enhanced integrated scattering probability for two arm gold dipole nanoantennas with an antenna feed gap compared to antennas of the size of one arm without a gap.
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