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Mid-Infrared Plasmonic Biosensing with Graphene
(Science, 2015-07-10)
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Infrared spectroscopy is the technique of choice for chemical identification of biomolecules through their vibrational fingerprints. However, infrared light interacts poorly with nanometric-size molecules. We exploit the ...
Phonon excitation by electron beams in nanographenes
(APS, 2015-09-30)
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Electron beams have the ability of exciting vibrational modes (phonons) in molecules and nanoclusters,
which can be currently probed with atomic spatial resolution through electron energy-loss spectroscopy (EELS).
This ...
Interference of surface plasmons and Smith-Purcell emission probed by angle-resolved cathodoluminescence spectroscopy
(APS, 2015-03-30)
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We investigate the interplay between geometrical lattice resonances and surface plasmons mediating the emission of Smith-Purcell visible light via angle-resolved cathodoluminescence spectroscopy. We observe strong modulations ...
Electrical control of optical emitter relaxation pathways enabled by graphene
(Nature Publishing Group, 2015-01-19)
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Controlling the energy flow processes and the associated energy relaxation rates of a light emitter is of fundamental interest and has many applications in the fields of quantum optics, photovoltaics, photodetection, ...
Plasmon wave function of graphene nanoribbons
(IOP, 2015-08-06)
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We find the low-frequency optical response of highly doped individual and arrayed graphene nanoribbons to be accurately described in terms of plasmon wave functions (PWFs). More precisely, we focus on the lowest-order ...
Resonant Visible Light Modulation with Graphene
(ACS, 2015-03-13)
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Fast modulation and switching of light at visible and near-infrared (vis–NIR) frequencies are of utmost importance for optical signal processing and sensing technologies. No fundamental limit appears to prevent us from ...
Plasmonics in atomically thin materials
(Royal Society of Chemistry, 2015-03-15)
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The observation and electrical manipulation of infrared surface plasmons in graphene have
triggered a search for similar photonic capabilities in other atomically thin materials that
enable electrical modulation of light ...
Ultraefficient Coupling of a Quantum Emitter to the Tunable Guided Plasmons of a Carbon Nanotube
(APS, 2015-10-23)
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We show that a single quantum emitter can efficiently couple to the tunable plasmons of a highly doped single-wall carbon nanotube (SWCNT). Plasmons in these quasi-one-dimensional carbon structures exhibit deep subwavelength ...
Quantum nonlocal effects in individual and interacting graphene nanoribbons
(Nature Publishing Group, 2015-01-30)
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We show that highly doped graphene ribbons can support surface plasmons at near-infrared frequencies when their width is in the nanometer range, leading to important nonlocal and finite quantum-size corrections, such as ...
Propagation and localization of quantum dot emission along a gap-plasmonic transmission line
(OSA, 2015-11-02)
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Plasmonic transmission lines have great potential to serve
as direct interconnects between nanoscale light spots. The guiding of gap
plasmons in the slot between adjacent nanowire pairs provides improved
propagation of ...