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Ying-Zhong Ma
Researcher at Oak Ridge National Laboratory
Publications - 93
Citations - 3319
Ying-Zhong Ma is an academic researcher from Oak Ridge National Laboratory. The author has contributed to research in topics: Exciton & Carbon nanotube. The author has an hindex of 29, co-authored 93 publications receiving 3029 citations. Previous affiliations of Ying-Zhong Ma include Vilnius University & Umeå University.
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Synthetic micelle sensitive to IR light via a two-photon process.
TL;DR: A micellar assembly of molecules constituted of poly(ethylene glycol) as the hydrophilic component and 2-diazo-1,2-naphthoquinone as the Hydrophobic component was shown to be destroyed in a two-photon photoreaction triggered by infrared light with release of an encapsulated fluorescent probe molecule.
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Femtosecond spectroscopy of optical excitations in single-walled carbon nanotubes: evidence for exciton-exciton annihilation.
TL;DR: Frequency-resolved femtosecond transient absorption spectra and kinetics measured by optical excitation of the second and first electronic transitions of the (8,3) single-walled carbon nanotube species reveal a unique mutual response between these transitions.
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Evidence for direct carotenoid involvement in the regulation of photosynthetic light harvesting
TL;DR: The lifetime and the spectral characteristics indicate that the kinetic difference originated from the involvement of the S1 state of a specific Xan, zeaxanthin, in the quenched case, which balances the input and utilization of light energy in photosynthesis and protects the plant against photooxidative damage.
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Ultrafast carrier dynamics in single-walled carbon nanotubes probed by femtosecond spectroscopy.
Ying-Zhong Ma,Jens Stenger,Jörg Zimmermann,Sergei M. Bachilo,Richard E. Smalley,R. Bruce Weisman,Graham R. Fleming +6 more
TL;DR: It is found that the dynamics of the ultrafast carrier dynamics in single-walled carbon nanotubes are dependent on excitation intensity and the electronic transitions initially excited.
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Polarization insensitive terahertz metamaterial absorber
TL;DR: The simulation, implementation, and measurement of a polarization insensitive resonant metamaterial absorber in the terahertz region is presented, allowing us to maximize absorption by varying the dielectric material and thickness and, hence, the effective electrical permittivity and magnetic permeability.