Search Results - "Song, Daohua"
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Phonon softening and crystallographic orientation of strained graphene studied by Raman spectroscopy
Published in Proceedings of the National Academy of Sciences - PNAS (05-05-2009)“…We present a systematic study of the Raman spectra of optical phonons in graphene monolayers under tunable uniaxial tensile stress. Both the G and 2D bands…”
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Temperature dependence of the anharmonic decay of optical phonons in carbon nanotubes and graphite
Published in Physical review. B, Condensed matter and materials physics (18-05-2011)Get full text
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Structural Dependence of Excitonic Optical Transitions and Band-Gap Energies in Carbon Nanotubes
Published in Nano letters (01-11-2005)“…The optical transitions of semiconducting carbon nanotubes have been ascribed to excitons. Here we use two-photon excitation spectroscopy to measure exciton…”
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Direct measurement of the lifetime of optical phonons in single-walled carbon nanotubes
Published in Physical review letters (06-06-2008)“…Time-resolved anti-Stokes Raman spectroscopy has been applied to probe the dynamics of optical phonons created in single-walled carbon nanotubes by femtosecond…”
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Measurement of the optical Stark effect in semiconducting carbon nanotubes
Published in Applied physics. A, Materials science & processing (01-08-2009)“…A strong optical Stark effect has been observed in (6,5) semiconducting single-walled carbon nanotubes by femtosecond pump-probe spectroscopy. The response is…”
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Optical Stark effect in semiconducting single-walled carbon nanotubes
Published in 2006 Conference on Lasers and Electro-Optics and 2006 Quantum Electronics and Laser Science Conference (01-05-2006)“…We have measured an optical Stark effect in semiconducting single-walled carbon nanotubes. Upon application of a non-resonant pump beam, we observe an…”
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Conference Proceeding -
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Orientational Motions of Vibrational Chromophores in Molecules at the Air/Water Interface with Time-Resolved Sum Frequency Generation
Published in The journal of physical chemistry. B (30-10-2008)“…The first time-resolved experiments in which interfacial molecules are pumped to excited electronic states and probed by vibrational sum frequency generation…”
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Optical studies of physical properties of nano-structures
Published 01-01-2007“…This thesis is divided into two parts. The first part of this dissertation describes the motivation and background, theory and experimental methods of using…”
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Dissertation
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Optical studies of physical properties of nano-structures
“…This thesis is divided into two parts. The first part of this dissertation describes the motivation and background, theory and experimental methods of using…”
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Dissertation -
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Time-resolved Raman Spectroscopy of Optical Phonons in Graphite: Phonon Anharmonic Coupling and Anomalous Stiffening
Published 21-08-2009“…Time-resolved Raman spectroscopy has been applied to probe the anharmonic coupling and electron-phonon interaction of optical phonons in graphite. From the…”
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Temperature dependence of the anharmonic decay of optical phonons in carbon nanotubes and graphite
Published 07-06-2011“…Physical Review B 83, 205411 (2011) We report on the temperature dependence of the anharmonic decay rate of zone-center (G mode) optical phonons in both…”
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Raman Spectroscopy of Graphene under Uniaxial Stress: Phonon Softening and Determination of the Crystallographic Orientation
Published 11-12-2008“…We present a systematic study of the Raman spectra of optical phonons in graphene monolayers under tunable uniaxial tensile stress. Both the G and 2D bands…”
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Journal Article