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Plasmons provide excellent sensitivity to detect analyte molecules through their strong interaction with the dielectric environment. Plasmonic sensors based on noble metals are, however, limited by the spectral broadening of these excitations. Here we identify a new mechanism that reveals the presence of individual molecules through the radical changes that they produce in the plasmons of graphene...
Electro-optical modulation of visible and near-infrared light is important for a wide variety of applications, ranging from communications to sensing and smart windows. However, currently available approaches result in rather bulky devices, suffer from low integrability [1], and can hardly operate at the low power consumption and fast switching rates of microelectronic drivers. Here we show that planar...
Plasmons, the collective oscillations of electrons in conducting materials, have the potential to interface electronic and photonic devices, and thus are widely studied in nanophotonics. Graphene, which has extraordinary optoelectronic properties due to its peculiar band structure [1], has proven to be an excellent plasmonic material, offering extremely strong, subwavelength electric field concentration...
Electro-optical modulation of visible and near-infrared light is important for a wide variety of applications, ranging from communications to sensing and smart windows. However, currently available approaches result in rather bulky devices, suffer from low integrability, and can hardly operate at the low power consumption and fast switching rates of microelectronic drivers. Here we show that planar...
We show experimentally for the first time that free-electron evanescent fields can be amplified by a plasmonic nanolayer in much that same way as optical evanescent fields are amplified in the poor-man's superlens.
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