Tuning and Tracking of Coherent Shear Waves in Molecular Films
| Autor: | Dmitry Khakhulin, Niels Harrit, S. O. Mariager, Nerijus Rusteika, Thomas Nørskov Nielsen, Marco Cammarata, Thomas Scheby Kuhlman, Shin-ya Koshihara, Robert Feidenhans'l, Henrik T. Lemke, Peter Hammershøj, Shin-ichi Adachi, Dag W. Breiby, Michael Wulff, Tine Ejdrup, Martin Nielsen, Theis I. Sølling |
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| Přispěvatelé: | Nano-Science Center [Copenhagen], Faculty of Health and Medical Sciences, University of Copenhagen = Københavns Universitet (KU)-University of Copenhagen = Københavns Universitet (KU)-Faculty of Science [Copenhagen], University of Copenhagen = Københavns Universitet (KU), Physics Department, Norwegian University of Science and Technology, Norwegian University of Science and Technology [Trondheim] (NTNU), Norwegian University of Science and Technology (NTNU)-Norwegian University of Science and Technology (NTNU), Tokyo Institute of Technology [Tokyo] (TITECH), European Synchrotron Radiation Facility (ESRF) |
| Jazyk: | angličtina |
| Rok vydání: | 2018 |
| Předmět: |
Diffraction
PICOSECOND LIGHT-PULSES Shear waves Materials science Phonon General Chemical Engineering 02 engineering and technology 010402 general chemistry 01 natural sciences Molecular physics Article lcsh:Chemistry Condensed Matter::Materials Science Thermoelastic damping X-RAY-DIFFRACTION Condensed Matter::Superconductivity Molecular film Thin film Penetration depth TRANSIENT ABSORPTION-SPECTROSCOPY [PHYS]Physics [physics] PERYLENE CRYSTAL General Chemistry PHONONS 021001 nanoscience & nanotechnology 0104 chemical sciences lcsh:QD1-999 Femtosecond 0210 nano-technology GENERATION |
| Zdroj: | ACS Omega ACS Omega, ACS Publications, 2018, 3 (8), pp.9929-9933. ⟨10.1021/acsomega.8b01400⟩ ACS Omega, Vol 3, Iss 8, Pp 9929-9933 (2018) Lemke, H T, Breiby, D W, Ejdrup, T, Hammershøj, P, Cammarata, M, Khakhulin, D, Rusteika, N, Adachi, S-I, Koshihara, S, Kuhlman, T S, Mariager, S O, Nielsen, T N, Wulff, M, Sølling, T I, Harrit, N, Feidenhans’l, R & Nielsen, M M 2018, ' Tuning and Tracking of Coherent Shear Waves in Molecular Films ', ACS Omega, vol. 3, no. 8, pp. 9929-9933 . https://doi.org/10.1021/acsomega.8b01400 'ACS Omega ', vol: 3, pages: 9929-9933 (2018) Lemke, H T, Breiby, D W, Ejdrup, T, Hammershøj, P, Cammarata, M, Khakhulin, D, Rusteika, N, Adachi, S-I, Koshihara, S, Kuhlman, T S, Mariager, S O, Nielsen, T N, Wulff, M, Sølling, T I, Harrit, N, Feidenhans'l, R & Nielsen, M M 2018, ' Tuning and Tracking of Coherent Shear Waves in Molecular Films ', ACS Omega, vol. 3, no. 8, pp. 9929-9933 . https://doi.org/10.1021/acsomega.8b01400 |
| ISSN: | 9929-9933 2470-1343 |
| Popis: | in films as response to femtosecond and picosecond laser pulse heating by timeresolved X-ray diffraction. This method allows a direct absolute determination of the molecular displacements induced by electron−phonon interactions, which are crucial for, for example, charge transport in organic electronic devices. We demonstrate that two different modes of coherent shear motion can be photoexcited in a thin film of organic molecules by careful tuning of the laser penetration depth relative to the thickness of the film. The measured response of the organic film to impulse heating is explained by a thermoelastic model and reveals the spatially resolved displacement in the film. Thereby, information about the profile of the energy deposition in the film as well as about the mechanical interaction with the substrate material is obtained. © 2018. This manuscript version is made available under the CC-BY-NC-ND 4.0 license http://creativecommons.org/licenses/by-nc-nd/4.0/ |
| Databáze: | OpenAIRE |
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