0000000000961414

AUTHOR

Shirshendu Dey

showing 2 related works from this author

Observation and analysis of Fano-like lineshapes in the Raman spectra of molecules adsorbed at metal interfaces

2015

Surface enhanced Raman spectra from molecules (bipyridyl ethylene) adsorbed on gold dumbells are observed to become increasingly asymmetric (Fano-like) at higher incident light intensity. The electronic temperature (inferred from the anti-Stokes (AS) electronic Raman signal increases at the same time while no vibrational AS scattering is seen. These observations are analyzed by assuming that the molecule-metal coupling contains an intensity dependent contribution (resulting from light-induced charge transfer transitions as well as renormalization of the molecule metal tunneling barrier). We find that interference between vibrational and electronic inelastic scattering routes is possible in …

Raman scatteringsurface-enhanced Raman scatteringbipyridyl ethyleneMaterials scienceFOS: Physical sciencesNanotechnology02 engineering and technology010402 general chemistry01 natural sciencesMolecular physicsSpectral linesymbols.namesakeMesoscale and Nanoscale Physics (cond-mat.mes-hall)MoleculePhysics::Chemical Physicsta116ta114Condensed Matter - Mesoscale and Nanoscale PhysicsScatteringadsorbtion021001 nanoscience & nanotechnologyRay0104 chemical sciences3. Good healthX-ray Raman scatteringYield (chemistry)symbols0210 nano-technologyRaman spectroscopymetal surfacesRaman scatteringPhysical Review B
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Seeing a single molecule vibrate through time-resolved coherent anti-Stokes Raman scattering

2014

The vibrations of the chemical bonds of a single molecule are observed by employing time-resolved coherent anti-Stokes Raman scattering. A gold nanoantenna is used to enhance the signal from the molecule.

Materials sciencebusiness.industrytechnology industry and agriculturePhysics::OpticsSignalMolecular physicsAtomic and Molecular Physics and OpticsElectronic Optical and Magnetic Materialssymbols.namesakeOpticsChemical bondsymbolsMoleculeCoherent anti-Stokes Raman spectroscopyPhysics::Chemical PhysicsRaman spectroscopybusinessta116Raman scatteringNature photonics
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