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Plasmonic nanoantennas confine electromagnetic fields at infrared wavelengths to volumes of only a few cubic nanometers, resulting in huge local fields in the vicinity of the resonantly excited metal particles. We exploited these fields to enhance the infrared vibrational bands of molecular monolayers with ultra-high sensitivity.
We demonstrate experimentally a plasmonic enhancement of the transverse magneto-optical Kerr effect. The enhanced Kerr effect modulates the transmitted light intensity by a large value of 1.5%, while high transparency of the system is maintained.
Plasmonic nanoantennas can enhance the radiative decay rate of quantum emitters via the Purcell‐effect. Similar to their radiofrequency equivalents, they can also direct the emitted light into preferential directions. In this paper we first investigate plasmonic Yagi‐Uda antennas that are able to confine light to and direct light from subwavelength size volumes. Hence, enhanced transition rates and...
Daniel Dregely et al. (see their Feature Article on pp. 666–677) investigated plasmonic Yagi‐Uda antennas and measured experimentally the modes supported by the antenna geometry by means of optical near‐field microscopy technique. By expanding the single antenna to a two‐dimensional antenna array with the antenna axes pointing out of the substrate plane, superior directive properties were obtained...
We demonstrate the use of a genetic algorithm based inverse design technique to target and fabricate helical structures via PnP. We furthermore show their inversion into other functional materials and their application as chiral metamaterials.
We demonstrate the transition from isolated to collective optical modes in plasmonic oligomers. Specifically, we investigate the resonant behavior of planar plasmonic hexamers and heptamers with gradually decreasing the inter-particle gap separation.
We fabricated three-dimensional arrays of optical Yagi-Uda nano-antennas. Due to the high directivity of the array structure the incoming light is received efficiently at the resonant wavelength in the near-infrared (around λ = 1.3 μm).
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