Zobrazeno 1 - 10
of 36
pro vyhledávání: '"Ryan R. Cooney"'
Autor:
Lai Chung Liu, Ryan R. Cooney, R. J. Dwayne Miller, Meng Gao, Michal A. Kochman, Carole A. Morrison, Cheng Lu, Hubert Jean-Ruel
Publikováno v:
Jean-ruel, H, Gao, M, Kochman, M A, Lu, C, Liu, L C, Cooney, R R, Morrison, C A & Miller, R J D 2013, ' Ring closing reaction in diarylethene captured by femtosecond electron crystallography ', Journal of Physical Chemistry B (Soft Condensed Matter and Biophysical Chemistry) . https://doi.org/10.1021/jp409245h
The Journal of Physical Chemistry B
The Journal of Physical Chemistry B
The photoinduced ring closing reaction in diarylethene, which serves as a modelsystem for understanding reactive crossings through conical intersections, was directly observed with atomic resolution using femtosecond electron diffraction. Complementa
Autor:
Yoshiaki Nakano, Germán Sciaini, Ken Onda, Shin-ya Koshihara, Lai Chung Liu, Xiangfeng Shao, Gunzi Saito, Cheng Lu, Alexander Marx, Hubert Jean-Ruel, Ryan R. Cooney, Hideki Yamochi, Meng Gao, Gustavo Moriena, R. J. Dwayne Miller, Takaaki Hiramatsu
Publikováno v:
Nature
Ultrafast processes can now be studied with the combined atomic spatial resolution of diffraction methods and the temporal resolution of femtosecond optical spectroscopy by using femtosecond pulses of electrons or hard X-rays as structural probes. Ho
Autor:
Meng Gao, Michal A. Kochman, Carole A. Morrison, Cheng Lu, Hubert Jean-Ruel, Ryan R. Cooney, R. J. Dwayne Miller
Publikováno v:
Morrison, C, Jean-Ruel, H, Cooney, R R, Gao, M, Lu, C, Kochman, M & Miller, R J D 2011, ' Femtosecond Dynamics of the Ring Closing Process of Diarylethene: A Case Study of Electrocyclic Reactions in Photochromic Single Crystals ', The Journal of Physical Chemistry A, vol. 115, no. 45, pp. 13158-13168 . https://doi.org/10.1021/jp205818h
The Journal of Physical Chemistry A
The Journal of Physical Chemistry A
The cyclization reaction of the photochromic diarylethene derivative 1,2-bis(2,4-dimethyl-5-phenyl-3-thienyl)perfluorocyclopentene was studied in its single crystal phase with femtosecond transient absorption spectroscopy. The transient absorption me
Autor:
D. M. Sagar, Ryan R. Cooney, Patanjali Kambhampati, Jonathan I. Saari, Samuel L. Sewall, Pooja Tyagi
Publikováno v:
Nano Letters. 10:3062-3067
By direct observation of coherent acoustic phonons, we demonstrate a novel extrinsic piezoelectric response in colloidal CdSe semiconductor quantum dots. This response is driven by the migration of charges to the surface of the quantum dot on a vibra
Publikováno v:
The Journal of Physical Chemistry C. 112:9124-9127
The first observation of state-resolved exciton−phonon couplings are reported for the lowest four eigenstates in strongly confined colloidal quantum dots for both optical and acoustic phonons. State-resolved pump/probe experiments show that the exc
Publikováno v:
The Journal of Physical Chemistry B. 108:18185-18191
Carbon 1s (C−R) → π*CC electronic transitions originating from the substituent-bonded carbon atom of a benzene ring show distinctive chemical shifts in their near-edge X-ray absorption fine structure (NEXAFS) spectra. We have systematically expl
Autor:
Lai Chung Liu, Yifeng Jiang, G. H. Kassier, R.J.D. Miller, Germán Sciaini, Gustavo Moriena, Ryan R. Cooney, Meng Gao, Cheng Lu, Hubert Jean-Ruel, Alexander Marx
Publikováno v:
Proceedings of SPIE
The advances made in femtosecond electron sources over the last thirty years have been remarkable. In particular, the development of ultrabright femtosecond electron sources has made possible the observation of molecular motion in labile organic mate
Autor:
Carole A. Morrison, Ryan R. Cooney, H. Jean–Ruel, Gustavo Moriena, Meng Gao, R. J. Dwayne Miller, Michal A. Kochman, Germán Sciaini, Lai Chung Liu, Cheng Lu
Publikováno v:
EPJ Web of Conferences, Vol 41, p 05033 (2013)
EPJ Web of Conferences
EPJ Web of Conferences
Femtosecond electron di raction is used to directly resolve the atomic mo- tions involved in the ring closing reaction induced in a photochromic single crystal. The measurements were performed using our newly developed setup capable of delivering sub
Autor:
Meng Gao, Gustavo Moriena, Hubert Jean-Ruel, Ryan R. Cooney, R. J. Dwayne Miller, Mark de Jong, Jonathan Stampe, Germán Sciaini
Publikováno v:
Scopus-Elsevier
Arrival time jitter and pulse duration is measured using ponderomotive scattering for dense femtosecond electron bunches compressed by a 3GHz RF cavity. We report 65 fs RMS jitter over 2 hours.
Publikováno v:
Physical Review B. 84
Biexciton processes in semiconductor nanocrystals, e.g. optical gain, are widely treated as arising from structureless biexcitons. We challenge this view by observing the binding energies of hot biexcitons in CdSe nanocrystals. These experiments reve