1
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Chen HY, Versteeg RB, Mankowsky R, Puppin M, Leroy L, Sander M, Deng Y, Oggenfuss RA, Zamofing T, Böhler P, Pradervand C, Mozzanica A, Vetter S, Smolentsev G, Kerkhoff L, Lemke HT, Chergui M, Mancini GF. A setup for hard x-ray time-resolved resonant inelastic x-ray scattering at SwissFEL. Struct Dyn 2024; 11:024308. [PMID: 38586277 PMCID: PMC10998714 DOI: 10.1063/4.0000236] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 12/12/2023] [Accepted: 03/04/2024] [Indexed: 04/09/2024]
Abstract
We present a new setup for resonant inelastic hard x-ray scattering at the Bernina beamline of SwissFEL with energy, momentum, and temporal resolution. The compact R = 0.5 m Johann-type spectrometer can be equipped with up to three crystal analyzers and allows efficient collection of RIXS spectra. Optical pumping for time-resolved studies can be realized with a broad span of optical wavelengths. We demonstrate the performance of the setup at an overall ∼180 meV resolution in a study of ground-state and photoexcited (at 400 nm) honeycomb 5d iridate α-Li2IrO3. Steady-state RIXS spectra at the iridium L3-edge (11.214 keV) have been collected and are in very good agreement with data collected at synchrotrons. The time-resolved RIXS transients exhibit changes in the energy loss region <2 eV, whose features mostly result from the hopping nature of 5d electrons in the honeycomb lattice. These changes are ascribed to modulations of the Ir-to-Ir inter-site transition scattering efficiency, which we associate to a transient screening of the on-site Coulomb interaction.
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Affiliation(s)
- Hui-Yuan Chen
- Lausanne Centre for Ultrafast Science (LACUS), ISIC, École Polytechnique Fédérale de Lausanne (EPFL), CH-1015 Lausanne, Switzerland
| | - Rolf B. Versteeg
- Lausanne Centre for Ultrafast Science (LACUS), ISIC, École Polytechnique Fédérale de Lausanne (EPFL), CH-1015 Lausanne, Switzerland
| | - Roman Mankowsky
- SwissFEL, Paul Scherrer Institut (PSI), 5232 Villigen, Switzerland
| | - Michele Puppin
- Lausanne Centre for Ultrafast Science (LACUS), ISIC, École Polytechnique Fédérale de Lausanne (EPFL), CH-1015 Lausanne, Switzerland
| | | | - Mathias Sander
- SwissFEL, Paul Scherrer Institut (PSI), 5232 Villigen, Switzerland
| | - Yunpei Deng
- SwissFEL, Paul Scherrer Institut (PSI), 5232 Villigen, Switzerland
| | | | - Thierry Zamofing
- SwissFEL, Paul Scherrer Institut (PSI), 5232 Villigen, Switzerland
| | - Pirmin Böhler
- SwissFEL, Paul Scherrer Institut (PSI), 5232 Villigen, Switzerland
| | - Claude Pradervand
- Photon Science Division, Paul Scherrer Institut (PSI), 5232 Villigen, Switzerland
| | - Aldo Mozzanica
- Photon Science Division, Paul Scherrer Institut (PSI), 5232 Villigen, Switzerland
| | - Seraphin Vetter
- Photon Science Division, Paul Scherrer Institut (PSI), 5232 Villigen, Switzerland
| | - Grigory Smolentsev
- Energy and Environment Research Division, Paul Scherrer Institut (PSI), 5232 Villigen, Switzerland
| | - Linda Kerkhoff
- Sect. Crystallography, Institute of Geology and Mineralogy, University of Cologne, 50674 Köln, Germany
| | - Henrik T. Lemke
- SwissFEL, Paul Scherrer Institut (PSI), 5232 Villigen, Switzerland
| | - Majed Chergui
- Authors to whom correspondence should be addressed: and
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2
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Mancini GF, Meijer OC, Campolongo P. Stress in adolescence as a first hit in stress-related disease development: Timing and context are crucial. Front Neuroendocrinol 2023; 69:101065. [PMID: 37001566 DOI: 10.1016/j.yfrne.2023.101065] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/07/2022] [Revised: 03/22/2023] [Accepted: 03/25/2023] [Indexed: 04/06/2023]
Abstract
The two-hit stress model predicts that exposure to stress at two different time-points in life may increase or decrease the risk of developing stress-related disorders later in life. Most studies based on the two-hit stress model have investigated early postnatal stress as the first hit with adult stress as the second hit. Adolescence, however, represents another highly sensitive developmental window during which exposure to stressful events may affect programming outcomes following exposure to stress in adulthood. Here, we discuss the programming effects of different types of stressors (social and nonsocial) occurring during adolescence (first hit) and how such stressors affect the responsiveness toward an additional stressor occurring during adulthood (second hit) in rodents. We then provide a comprehensive overview of the potential mechanisms underlying interindividual and sex differences in the resilience/susceptibility to developing stress-related disorders later in life when stress is experienced in two different life stages.
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Affiliation(s)
- Giulia F Mancini
- Dept. of Physiology and Pharmacology, Sapienza University of Rome, 00185 Rome, Italy; Department of Medicine, Division of Endocrinology, Leiden University Medical Center, 2333 ZA Leiden, The Netherlands
| | - Onno C Meijer
- Department of Medicine, Division of Endocrinology, Leiden University Medical Center, 2333 ZA Leiden, The Netherlands
| | - Patrizia Campolongo
- Dept. of Physiology and Pharmacology, Sapienza University of Rome, 00185 Rome, Italy; Neuropsychopharmacology Unit, IRCSS Fondazione Santa Lucia, 00143 Rome, Italy.
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3
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Bacellar C, Rouxel JR, Ingle RA, Mancini GF, Kinschel D, Cannelli O, Zhao Y, Cirelli C, Knopp G, Szlachetko J, Lima FA, Menzi S, Ozerov D, Pamfilidis G, Kubicek K, Khakhulin D, Gawelda W, Rodriguez-Fernandez A, Biednov M, Bressler C, Arrell CA, Johnson PJM, Milne CJ, Chergui M. Ultrafast Energy Transfer from Photoexcited Tryptophan to the Haem in Cytochrome c. J Phys Chem Lett 2023; 14:2425-2432. [PMID: 36862109 DOI: 10.1021/acs.jpclett.3c00218] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/18/2023]
Abstract
We report femtosecond Fe K-edge absorption (XAS) and nonresonant X-ray emission (XES) spectra of ferric cytochrome C (Cyt c) upon excitation of the haem (>300 nm) or mixed excitation of the haem and tryptophan (<300 nm). The XAS and XES transients obtained in both excitation energy ranges show no evidence for electron transfer processes between photoexcited tryptophan (Trp) and the haem, but rather an ultrafast energy transfer, in agreement with previous ultrafast optical fluorescence and transient absorption studies. The reported (J. Phys. Chem. B 2011, 115 (46), 13723-13730) decay times of Trp fluorescence in ferrous (∼350 fs) and ferric (∼700 fs) Cyt c are among the shortest ever reported for Trp in a protein. The observed time scales cannot be rationalized in terms of Förster or Dexter energy transfer mechanisms and call for a more thorough theoretical investigation.
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Affiliation(s)
- Camila Bacellar
- Ecole Polytechnique Fédérale de Lausanne (EPFL), Laboratoire de Spectroscopie Ultrarapide (LSU), ISIC and Lausanne Centre for Ultrafast Science (LACUS), CH-1015 Lausanne, Switzerland
- SwissFEL, Paul-Scherrer-Institut (PSI), 5232 Villigen PSI, Switzerland
| | - Jérémy R Rouxel
- Ecole Polytechnique Fédérale de Lausanne (EPFL), Laboratoire de Spectroscopie Ultrarapide (LSU), ISIC and Lausanne Centre for Ultrafast Science (LACUS), CH-1015 Lausanne, Switzerland
- Univ Lyon, UJM-Saint-Etienne, CNRS, Graduate School Optics Institute, Laboratoire Hubert Curien, UMR 5516, Saint-Etienne F-42023, France
| | - Rebecca A Ingle
- Ecole Polytechnique Fédérale de Lausanne (EPFL), Laboratoire de Spectroscopie Ultrarapide (LSU), ISIC and Lausanne Centre for Ultrafast Science (LACUS), CH-1015 Lausanne, Switzerland
- Department of Chemistry, University College London, 20 Gordon Street, London WC1H 0AJ, United Kingdom
| | - Giulia F Mancini
- Ecole Polytechnique Fédérale de Lausanne (EPFL), Laboratoire de Spectroscopie Ultrarapide (LSU), ISIC and Lausanne Centre for Ultrafast Science (LACUS), CH-1015 Lausanne, Switzerland
- 2Laboratory for Ultrafast X-ray and Electron Microscopy, Department of Physics, University of Pavia, Via Agostino Bassi 6, 27100 Pavia PV, Italy
| | - Dominik Kinschel
- Ecole Polytechnique Fédérale de Lausanne (EPFL), Laboratoire de Spectroscopie Ultrarapide (LSU), ISIC and Lausanne Centre for Ultrafast Science (LACUS), CH-1015 Lausanne, Switzerland
| | - Oliviero Cannelli
- Ecole Polytechnique Fédérale de Lausanne (EPFL), Laboratoire de Spectroscopie Ultrarapide (LSU), ISIC and Lausanne Centre for Ultrafast Science (LACUS), CH-1015 Lausanne, Switzerland
| | - Yang Zhao
- Ecole Polytechnique Fédérale de Lausanne (EPFL), Laboratoire de Spectroscopie Ultrarapide (LSU), ISIC and Lausanne Centre for Ultrafast Science (LACUS), CH-1015 Lausanne, Switzerland
| | - Claudio Cirelli
- SwissFEL, Paul-Scherrer-Institut (PSI), 5232 Villigen PSI, Switzerland
| | - Gregor Knopp
- SwissFEL, Paul-Scherrer-Institut (PSI), 5232 Villigen PSI, Switzerland
| | - Jakub Szlachetko
- SOLARIS National Synchrotron Radiation Centre, Jagiellonian University, 30-392 Kraków, Poland
| | | | - Samuel Menzi
- SwissFEL, Paul-Scherrer-Institut (PSI), 5232 Villigen PSI, Switzerland
| | - Dmitry Ozerov
- SwissFEL, Paul-Scherrer-Institut (PSI), 5232 Villigen PSI, Switzerland
| | | | | | | | - Wojciech Gawelda
- European XFEL, Holzkoppel 4, D-22869 Schenefeld, Germany
- Faculty of Physics, Adam Mickiewicz University, ul. Uniwersytetu Poznanskiego 2, 61-614 Poznan, Poland
- Departamento de Química, Universidad Autónoma de Madrid, 28049 Madrid, Spain
- IMDEA Nanociencia, Calle Faraday 9, 28049 Madrid, Spain
| | | | - Mykola Biednov
- European XFEL, Holzkoppel 4, D-22869 Schenefeld, Germany
| | | | | | | | - Christopher J Milne
- SwissFEL, Paul-Scherrer-Institut (PSI), 5232 Villigen PSI, Switzerland
- European XFEL, Holzkoppel 4, D-22869 Schenefeld, Germany
| | - Majed Chergui
- Ecole Polytechnique Fédérale de Lausanne (EPFL), Laboratoire de Spectroscopie Ultrarapide (LSU), ISIC and Lausanne Centre for Ultrafast Science (LACUS), CH-1015 Lausanne, Switzerland
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4
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Marchetta E, Mancini GF, Morena M, Campolongo P. Enhancing Psychological Interventions for Post-Traumatic Stress Disorder (PTSD) Treatment with Memory Influencing Drugs. Curr Neuropharmacol 2023; 21:687-707. [PMID: 36503450 DOI: 10.2174/1570159x21666221207162750] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/25/2022] [Revised: 04/28/2022] [Accepted: 05/11/2022] [Indexed: 12/14/2022] Open
Abstract
Post-traumatic stress disorder (PTSD) is a chronic psychiatric disease resulting from the experience or witnessing of traumatic events. Persistent PTSD symptoms impair patients' daily quality of life, jeopardizing sleep, mood, sociability, and arousal. Recommended psychological or pharmacological interventions are effective only in a small portion of patients and often lead to relapse. Thus, there is a critical need to address a lack of advancement in the treatment of PTSD. The combination of psychological interventions, aimed at facilitating the extinction of the traumatic memory, and pharmacological medications, represents a promising tool for PTSD treatment. Timely use of psychotherapy in conjunction with pharmacological treatments, rather than monotherapy, could thus determine a synergistic effect by potentiating the effects of psychological interventions. In such a scenario, drugs that modulate cognitive processes involved in the development and/or persistence of post-traumatic symptomatology could be of great help to improve the outcome of psychotherapies and patients' prognosis. The purpose of the present article is to review the current data available from clinical trials on combined pharmacological treatments with psychological interventions in PTSD therapy. An overview of findings from animal studies that prompted clinical research is also discussed.
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Affiliation(s)
- Enrico Marchetta
- Department of Physiology and Pharmacology, University of Rome, Sapienza, Rome, Italy
- Neuropsychopharmacology Laboratory, European Center for Brain Research, Santa Lucia Foundation, Rome, Italy
| | - Giulia F Mancini
- Department of Physiology and Pharmacology, University of Rome, Sapienza, Rome, Italy
- Department of Medicine, Division of Endocrinology, Leiden University Medical Center, Leiden, The Netherlands
| | - Maria Morena
- Department of Physiology and Pharmacology, University of Rome, Sapienza, Rome, Italy
- Neuropsychopharmacology Laboratory, European Center for Brain Research, Santa Lucia Foundation, Rome, Italy
| | - Patrizia Campolongo
- Department of Physiology and Pharmacology, University of Rome, Sapienza, Rome, Italy
- Neuropsychopharmacology Laboratory, European Center for Brain Research, Santa Lucia Foundation, Rome, Italy
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5
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Cannelli O, Wiktor J, Colonna N, Leroy L, Puppin M, Bacellar C, Sadykov I, Krieg F, Smolentsev G, Kovalenko MV, Pasquarello A, Chergui M, Mancini GF. Atomic-Level Description of Thermal Fluctuations in Inorganic Lead Halide Perovskites. J Phys Chem Lett 2022; 13:3382-3391. [PMID: 35404613 PMCID: PMC9036582 DOI: 10.1021/acs.jpclett.2c00281] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 05/08/2023]
Abstract
A comprehensive microscopic description of thermally induced distortions in lead halide perovskites is crucial for their realistic applications, yet still unclear. Here, we quantify the effects of thermal activation in CsPbBr3 nanocrystals across length scales with atomic-level precision, and we provide a framework for the description of phase transitions therein, beyond the simplistic picture of unit-cell symmetry increase upon heating. The temperature increase significantly enhances the short-range structural distortions of the lead halide framework as a consequence of the phonon anharmonicity, which causes the excess free energy surface to change as a function of temperature. As a result, phase transitions can be rationalized via the soft-mode model, which also describes displacive thermal phase transitions in oxide perovskites. Our findings allow to reconcile temperature-dependent modifications of physical properties, such as changes in the optical band gap, that are incompatible with the perovskite time- and space-average structures.
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Affiliation(s)
- Oliviero Cannelli
- Laboratory
of Ultrafast Spectroscopy (LSU) and Lausanne Centre for Ultrafast
Science (LACUS), École Polytechnique
Fédérale de Lausanne, CH-1015 Lausanne, Switzerland
| | - Julia Wiktor
- Department
of Physics, Chalmers University of Technology, SE-412 96 Gothenburg, Sweden
| | - Nicola Colonna
- Laboratory
for Neutron Scattering and Imaging, Paul
Scherrer Institute, CH-5232 Villigen-PSI, Switzerland
- National
Centre for Computational Design and Discovery of Novel Materials (MARVEL), École Polytechnique Fédérale
de Lausanne, CH-1015 Lausanne, Switzerland
| | - Ludmila Leroy
- Laboratory
of Ultrafast Spectroscopy (LSU) and Lausanne Centre for Ultrafast
Science (LACUS), École Polytechnique
Fédérale de Lausanne, CH-1015 Lausanne, Switzerland
- LabCri,
Departamento de Física, Universidade
Federal de Minas Gerais, 31270-901 Belo Horizonte, Brazil
| | - Michele Puppin
- Laboratory
of Ultrafast Spectroscopy (LSU) and Lausanne Centre for Ultrafast
Science (LACUS), École Polytechnique
Fédérale de Lausanne, CH-1015 Lausanne, Switzerland
| | - Camila Bacellar
- Paul
Scherrer
Institute (PSI), CH-5232 Villigen, Switzerland
| | - Ilia Sadykov
- Paul
Scherrer
Institute (PSI), CH-5232 Villigen, Switzerland
| | - Franziska Krieg
- Institute
of Inorganic Chemistry, Department of Chemistry and Applied Biosciences, ETH Zürich, CH-8093 Zürich, Switzerland
- Laboratory
for Thin Films and Photovoltaics, Empa-Swiss
Federal Laboratories for Materials Science and Technology, CH-8600 Dübendorf, Switzerland
| | | | - Maksym V. Kovalenko
- Institute
of Inorganic Chemistry, Department of Chemistry and Applied Biosciences, ETH Zürich, CH-8093 Zürich, Switzerland
- Laboratory
for Thin Films and Photovoltaics, Empa-Swiss
Federal Laboratories for Materials Science and Technology, CH-8600 Dübendorf, Switzerland
| | - Alfredo Pasquarello
- Chaire
de Simulation à l’Echelle Atomique (CSEA), École Polytechnique Fédérale
de Lausanne (EPFL), CH-1015 Lausanne, Switzerland
| | - Majed Chergui
- Laboratory
of Ultrafast Spectroscopy (LSU) and Lausanne Centre for Ultrafast
Science (LACUS), École Polytechnique
Fédérale de Lausanne, CH-1015 Lausanne, Switzerland
| | - Giulia F. Mancini
- Laboratory
for Ultrafast X-ray and Electron Microscopy (LUXEM), Department of
Physics, University of Pavia, I-27100 Pavia, Italy
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6
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Cannelli O, Colonna N, Puppin M, Rossi TC, Kinschel D, Leroy LMD, Löffler J, Budarz JM, March AM, Doumy G, Al Haddad A, Tu MF, Kumagai Y, Walko D, Smolentsev G, Krieg F, Boehme SC, Kovalenko MV, Chergui M, Mancini GF. Quantifying Photoinduced Polaronic Distortions in Inorganic Lead Halide Perovskite Nanocrystals. J Am Chem Soc 2021; 143:9048-9059. [PMID: 34075753 PMCID: PMC8227469 DOI: 10.1021/jacs.1c02403] [Citation(s) in RCA: 19] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/03/2021] [Indexed: 12/17/2022]
Abstract
The development of next-generation perovskite-based optoelectronic devices relies critically on the understanding of the interaction between charge carriers and the polar lattice in out-of-equilibrium conditions. While it has become increasingly evident for CsPbBr3 perovskites that the Pb-Br framework flexibility plays a key role in their light-activated functionality, the corresponding local structural rearrangement has not yet been unambiguously identified. In this work, we demonstrate that the photoinduced lattice changes in the system are due to a specific polaronic distortion, associated with the activation of a longitudinal optical phonon mode at 18 meV by electron-phonon coupling, and we quantify the associated structural changes with atomic-level precision. Key to this achievement is the combination of time-resolved and temperature-dependent studies at Br K and Pb L3 X-ray absorption edges with refined ab initio simulations, which fully account for the screened core-hole final state effects on the X-ray absorption spectra. From the temporal kinetics, we show that carrier recombination reversibly unlocks the structural deformation at both Br and Pb sites. The comparison with the temperature-dependent XAS results rules out thermal effects as the primary source of distortion of the Pb-Br bonding motif during photoexcitation. Our work provides a comprehensive description of the CsPbBr3 perovskites' photophysics, offering novel insights on the light-induced response of the system and its exceptional optoelectronic properties.
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Affiliation(s)
- Oliviero Cannelli
- Laboratory
of Ultrafast Spectroscopy (LSU) and Lausanne Centre for Ultrafast
Science (LACUS), École Polytechnique
Fédérale de Lausanne, CH-1015 Lausanne, Switzerland
| | - Nicola Colonna
- Laboratory
for Neutron Scattering and Imaging, Paul
Scherrer Institute, CH-5232 Villigen-PSI, Switzerland
- National
Centre for Computational Design and Discovery of Novel Materials (MARVEL), École Polytechnique Fédérale
de Lausanne, CH-1015 Lausanne, Switzerland
| | - Michele Puppin
- Laboratory
of Ultrafast Spectroscopy (LSU) and Lausanne Centre for Ultrafast
Science (LACUS), École Polytechnique
Fédérale de Lausanne, CH-1015 Lausanne, Switzerland
| | - Thomas C. Rossi
- Laboratory
of Ultrafast Spectroscopy (LSU) and Lausanne Centre for Ultrafast
Science (LACUS), École Polytechnique
Fédérale de Lausanne, CH-1015 Lausanne, Switzerland
| | - Dominik Kinschel
- Laboratory
of Ultrafast Spectroscopy (LSU) and Lausanne Centre for Ultrafast
Science (LACUS), École Polytechnique
Fédérale de Lausanne, CH-1015 Lausanne, Switzerland
| | - Ludmila M. D. Leroy
- Laboratory
of Ultrafast Spectroscopy (LSU) and Lausanne Centre for Ultrafast
Science (LACUS), École Polytechnique
Fédérale de Lausanne, CH-1015 Lausanne, Switzerland
- LabCri, Universidade Federal de Minas Gerais, 31270-901 Belo
Horizonte, Brazil
| | - Janina Löffler
- Laboratory
of Ultrafast Spectroscopy (LSU) and Lausanne Centre for Ultrafast
Science (LACUS), École Polytechnique
Fédérale de Lausanne, CH-1015 Lausanne, Switzerland
| | - James M. Budarz
- Laboratory
of Ultrafast Spectroscopy (LSU) and Lausanne Centre for Ultrafast
Science (LACUS), École Polytechnique
Fédérale de Lausanne, CH-1015 Lausanne, Switzerland
| | - Anne Marie March
- Chemical
Sciences and Engineering Division, Argonne
National Laboratory, 9700 S. Cass Avenue, Lemont, Illinois 60439, United
States
| | - Gilles Doumy
- Chemical
Sciences and Engineering Division, Argonne
National Laboratory, 9700 S. Cass Avenue, Lemont, Illinois 60439, United
States
| | - Andre Al Haddad
- Chemical
Sciences and Engineering Division, Argonne
National Laboratory, 9700 S. Cass Avenue, Lemont, Illinois 60439, United
States
| | - Ming-Feng Tu
- Chemical
Sciences and Engineering Division, Argonne
National Laboratory, 9700 S. Cass Avenue, Lemont, Illinois 60439, United
States
| | - Yoshiaki Kumagai
- Chemical
Sciences and Engineering Division, Argonne
National Laboratory, 9700 S. Cass Avenue, Lemont, Illinois 60439, United
States
| | - Donald Walko
- Advanced
Photon Source, Argonne National Laboratory, 9700 S. Cass Avenue, Lemont, Illinois 60439, United States
| | | | - Franziska Krieg
- Institute
of Inorganic Chemistry, Department of Chemistry and Applied Biosciences, ETH Zürich, Vladimir Prelog Weg 1, CH-8093 Zürich, Switzerland
- Laboratory
for Thin Films and Photovoltaics, Empa-Swiss
Federal Laboratories for Materials Science and Technology, CH-8600 Dübendorf, Switzerland
| | - Simon C. Boehme
- Institute
of Inorganic Chemistry, Department of Chemistry and Applied Biosciences, ETH Zürich, Vladimir Prelog Weg 1, CH-8093 Zürich, Switzerland
- Laboratory
for Thin Films and Photovoltaics, Empa-Swiss
Federal Laboratories for Materials Science and Technology, CH-8600 Dübendorf, Switzerland
| | - Maksym V. Kovalenko
- Institute
of Inorganic Chemistry, Department of Chemistry and Applied Biosciences, ETH Zürich, Vladimir Prelog Weg 1, CH-8093 Zürich, Switzerland
- Laboratory
for Thin Films and Photovoltaics, Empa-Swiss
Federal Laboratories for Materials Science and Technology, CH-8600 Dübendorf, Switzerland
| | - Majed Chergui
- Laboratory
of Ultrafast Spectroscopy (LSU) and Lausanne Centre for Ultrafast
Science (LACUS), École Polytechnique
Fédérale de Lausanne, CH-1015 Lausanne, Switzerland
| | - Giulia F. Mancini
- Laboratory
of Ultrafast Spectroscopy (LSU) and Lausanne Centre for Ultrafast
Science (LACUS), École Polytechnique
Fédérale de Lausanne, CH-1015 Lausanne, Switzerland
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7
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Bacellar C, Kinschel D, Cannelli O, Sorokin B, Katayama T, Mancini GF, Rouxel JR, Obara Y, Nishitani J, Ito H, Ito T, Kurahashi N, Higashimura C, Kudo S, Cirelli C, Knopp G, Nass K, Johnson PJM, Wach A, Szlachetko J, Lima FA, Milne CJ, Yabashi M, Suzuki T, Misawa K, Chergui M. Femtosecond X-ray spectroscopy of haem proteins. Faraday Discuss 2021; 228:312-328. [PMID: 33565544 DOI: 10.1039/d0fd00131g] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
We discuss our recently reported femtosecond (fs) X-ray emission spectroscopy results on the ligand dissociation and recombination in nitrosylmyoglobin (MbNO) in the context of previous studies on ferrous haem proteins. We also present a preliminary account of femtosecond X-ray absorption studies on MbNO, pointing to the presence of more than one species formed upon photolysis.
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Affiliation(s)
- Camila Bacellar
- Laboratoire de Spectroscopie Ultrarapide (LSU), Lausanne Centre for Ultrafast Science (LACUS), École Polytechnique Fédérale de Lausanne (EPFL), 1015 Lausanne, Switzerland.
| | - Dominik Kinschel
- Laboratoire de Spectroscopie Ultrarapide (LSU), Lausanne Centre for Ultrafast Science (LACUS), École Polytechnique Fédérale de Lausanne (EPFL), 1015 Lausanne, Switzerland.
| | - Oliviero Cannelli
- Laboratoire de Spectroscopie Ultrarapide (LSU), Lausanne Centre for Ultrafast Science (LACUS), École Polytechnique Fédérale de Lausanne (EPFL), 1015 Lausanne, Switzerland.
| | - Boris Sorokin
- Laboratoire de Spectroscopie Ultrarapide (LSU), Lausanne Centre for Ultrafast Science (LACUS), École Polytechnique Fédérale de Lausanne (EPFL), 1015 Lausanne, Switzerland.
| | - Tetsuo Katayama
- Japan Synchrotron Radiation Research Institute (JASRI), 1-1-1, Kouto, Sayo-cho Sayo-gun, Hyogo 679-5198, Japan
| | - Giulia F Mancini
- Laboratoire de Spectroscopie Ultrarapide (LSU), Lausanne Centre for Ultrafast Science (LACUS), École Polytechnique Fédérale de Lausanne (EPFL), 1015 Lausanne, Switzerland.
| | - Jeremy R Rouxel
- Laboratoire de Spectroscopie Ultrarapide (LSU), Lausanne Centre for Ultrafast Science (LACUS), École Polytechnique Fédérale de Lausanne (EPFL), 1015 Lausanne, Switzerland.
| | - Yuki Obara
- Tokyo University of Agriculture and Technology (TUAT), 2-24-16 Naka-cho, Koganei, Tokyo 184-8588, Japan
| | - Junichi Nishitani
- Department of Chemistry, Graduate School of Science, Kyoto University, Kitashirakawa-Oiwakecho, Sakyo-Ku, Kyoto 606-8502, Japan
| | - Hironori Ito
- Tokyo University of Agriculture and Technology (TUAT), 2-24-16 Naka-cho, Koganei, Tokyo 184-8588, Japan
| | - Terumasa Ito
- Tokyo University of Agriculture and Technology (TUAT), 2-24-16 Naka-cho, Koganei, Tokyo 184-8588, Japan
| | - Naoya Kurahashi
- Department of Materials and Life Sciences, Faculty of Science and Technology, Sophia University, Kioicho, 7-1, Chiyoda, 102-8554 Tokyo, Japan
| | - Chika Higashimura
- Department of Chemistry, Graduate School of Science, Kyoto University, Kitashirakawa-Oiwakecho, Sakyo-Ku, Kyoto 606-8502, Japan
| | - Shotaro Kudo
- Department of Chemistry, Graduate School of Science, Kyoto University, Kitashirakawa-Oiwakecho, Sakyo-Ku, Kyoto 606-8502, Japan
| | - Claudio Cirelli
- SwissFEL, Paul Scherrer Institut (PSI), 5232 Villigen, Switzerland
| | - Gregor Knopp
- SwissFEL, Paul Scherrer Institut (PSI), 5232 Villigen, Switzerland
| | - Karol Nass
- SwissFEL, Paul Scherrer Institut (PSI), 5232 Villigen, Switzerland
| | | | - Anna Wach
- Institute of Nuclear Physics, Polish Academy of Sciences, 31-342 Krakow, Poland
| | - Jakub Szlachetko
- Institute of Nuclear Physics, Polish Academy of Sciences, 31-342 Krakow, Poland
| | | | | | - Makina Yabashi
- Japan Synchrotron Radiation Research Institute (JASRI), 1-1-1, Kouto, Sayo-cho Sayo-gun, Hyogo 679-5198, Japan
| | - Toshinori Suzuki
- Department of Chemistry, Graduate School of Science, Kyoto University, Kitashirakawa-Oiwakecho, Sakyo-Ku, Kyoto 606-8502, Japan
| | - Kazuhiko Misawa
- Tokyo University of Agriculture and Technology (TUAT), 2-24-16 Naka-cho, Koganei, Tokyo 184-8588, Japan
| | - Majed Chergui
- Laboratoire de Spectroscopie Ultrarapide (LSU), Lausanne Centre for Ultrafast Science (LACUS), École Polytechnique Fédérale de Lausanne (EPFL), 1015 Lausanne, Switzerland.
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8
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Mariette C, Lorenc M, Cailleau H, Collet E, Guérin L, Volte A, Trzop E, Bertoni R, Dong X, Lépine B, Hernandez O, Janod E, Cario L, Ta Phuoc V, Ohkoshi S, Tokoro H, Patthey L, Babic A, Usov I, Ozerov D, Sala L, Ebner S, Böhler P, Keller A, Oggenfuss A, Zmofing T, Redford S, Vetter S, Follath R, Juranic P, Schreiber A, Beaud P, Esposito V, Deng Y, Ingold G, Chergui M, Mancini GF, Mankowsky R, Svetina C, Zerdane S, Mozzanica A, Bosak A, Wulff M, Levantino M, Lemke H, Cammarata M. Strain wave pathway to semiconductor-to-metal transition revealed by time-resolved X-ray powder diffraction. Nat Commun 2021; 12:1239. [PMID: 33623010 PMCID: PMC7902810 DOI: 10.1038/s41467-021-21316-y] [Citation(s) in RCA: 11] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/22/2020] [Accepted: 01/13/2021] [Indexed: 11/09/2022] Open
Abstract
One of the main challenges in ultrafast material science is to trigger phase transitions with short pulses of light. Here we show how strain waves, launched by electronic and structural precursor phenomena, determine a coherent macroscopic transformation pathway for the semiconducting-to-metal transition in bistable Ti3O5 nanocrystals. Employing femtosecond powder X-ray diffraction, we measure the lattice deformation in the phase transition as a function of time. We monitor the early intra-cell distortion around the light absorbing metal dimer and the long range deformations governed by acoustic waves propagating from the laser-exposed Ti3O5 surface. We developed a simplified elastic model demonstrating that picosecond switching in nanocrystals happens concomitantly with the propagating acoustic wavefront, several decades faster than thermal processes governed by heat diffusion.
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Affiliation(s)
- C Mariette
- Univ Rennes, CNRS, IPR (Institut de Physique de Rennes)-UMR 6251, Rennes, France.
| | - M Lorenc
- Univ Rennes, CNRS, IPR (Institut de Physique de Rennes)-UMR 6251, Rennes, France.
| | - H Cailleau
- Univ Rennes, CNRS, IPR (Institut de Physique de Rennes)-UMR 6251, Rennes, France
| | - E Collet
- Univ Rennes, CNRS, IPR (Institut de Physique de Rennes)-UMR 6251, Rennes, France
| | - L Guérin
- Univ Rennes, CNRS, IPR (Institut de Physique de Rennes)-UMR 6251, Rennes, France
| | - A Volte
- Univ Rennes, CNRS, IPR (Institut de Physique de Rennes)-UMR 6251, Rennes, France
| | - E Trzop
- Univ Rennes, CNRS, IPR (Institut de Physique de Rennes)-UMR 6251, Rennes, France
| | - R Bertoni
- Univ Rennes, CNRS, IPR (Institut de Physique de Rennes)-UMR 6251, Rennes, France
| | - X Dong
- Univ Rennes, CNRS, IPR (Institut de Physique de Rennes)-UMR 6251, Rennes, France
| | - B Lépine
- Univ Rennes, CNRS, IPR (Institut de Physique de Rennes)-UMR 6251, Rennes, France
| | - O Hernandez
- Univ Rennes, CNRS, ISCR (Institut des Sciences Chimiques de Rennes)-UMR 6226, Rennes, France
| | - E Janod
- Institut des Matériaux Jean Rouxel (IMN), Université de Nantes, CNRS, Nantes, France
| | - L Cario
- Institut des Matériaux Jean Rouxel (IMN), Université de Nantes, CNRS, Nantes, France
| | - V Ta Phuoc
- GREMAN-UMR 7347 CNRS, Université de Tours, Tours, France
| | - S Ohkoshi
- Department of Chemistry, School of Science, The University of Tokyo, Bunkyo-ku, Tokyo, Japan
| | - H Tokoro
- Department of Chemistry, School of Science, The University of Tokyo, Bunkyo-ku, Tokyo, Japan.,Department of Materials Science, Faculty of Pure and Applied Sciences, University of Tsukuba, Tsukuba, Ibaraki, Japan
| | - L Patthey
- SwissFEL, Paul Scherrer Institut, Villigen PSI, Switzerland
| | - A Babic
- SwissFEL, Paul Scherrer Institut, Villigen PSI, Switzerland
| | - I Usov
- SwissFEL, Paul Scherrer Institut, Villigen PSI, Switzerland
| | - D Ozerov
- SwissFEL, Paul Scherrer Institut, Villigen PSI, Switzerland
| | - L Sala
- SwissFEL, Paul Scherrer Institut, Villigen PSI, Switzerland
| | - S Ebner
- SwissFEL, Paul Scherrer Institut, Villigen PSI, Switzerland
| | - P Böhler
- SwissFEL, Paul Scherrer Institut, Villigen PSI, Switzerland
| | - A Keller
- SwissFEL, Paul Scherrer Institut, Villigen PSI, Switzerland
| | - A Oggenfuss
- SwissFEL, Paul Scherrer Institut, Villigen PSI, Switzerland
| | - T Zmofing
- SwissFEL, Paul Scherrer Institut, Villigen PSI, Switzerland
| | - S Redford
- SwissFEL, Paul Scherrer Institut, Villigen PSI, Switzerland
| | - S Vetter
- SwissFEL, Paul Scherrer Institut, Villigen PSI, Switzerland
| | - R Follath
- SwissFEL, Paul Scherrer Institut, Villigen PSI, Switzerland
| | - P Juranic
- SwissFEL, Paul Scherrer Institut, Villigen PSI, Switzerland
| | - A Schreiber
- SwissFEL, Paul Scherrer Institut, Villigen PSI, Switzerland
| | - P Beaud
- SwissFEL, Paul Scherrer Institut, Villigen PSI, Switzerland
| | - V Esposito
- SwissFEL, Paul Scherrer Institut, Villigen PSI, Switzerland.,Institute for Materials and Energy Science, Stanford University and SLAC National Accelerator Laboratory, Menlo Park, CA, USA
| | - Y Deng
- SwissFEL, Paul Scherrer Institut, Villigen PSI, Switzerland
| | - G Ingold
- SwissFEL, Paul Scherrer Institut, Villigen PSI, Switzerland
| | - M Chergui
- Laboratory of Ultrafast Spectroscopy, Lausanne Center for Ultrafast Science (LACUS), École Polytechnique Fédérale de Lausanne, Lausanne, Switzerland
| | - G F Mancini
- SwissFEL, Paul Scherrer Institut, Villigen PSI, Switzerland.,Laboratory of Ultrafast Spectroscopy, Lausanne Center for Ultrafast Science (LACUS), École Polytechnique Fédérale de Lausanne, Lausanne, Switzerland
| | - R Mankowsky
- SwissFEL, Paul Scherrer Institut, Villigen PSI, Switzerland
| | - C Svetina
- SwissFEL, Paul Scherrer Institut, Villigen PSI, Switzerland
| | - S Zerdane
- SwissFEL, Paul Scherrer Institut, Villigen PSI, Switzerland
| | - A Mozzanica
- SwissFEL, Paul Scherrer Institut, Villigen PSI, Switzerland
| | - A Bosak
- European Synchrotron Radiation Facility, Grenoble, France
| | - M Wulff
- European Synchrotron Radiation Facility, Grenoble, France
| | - M Levantino
- European Synchrotron Radiation Facility, Grenoble, France
| | - H Lemke
- SwissFEL, Paul Scherrer Institut, Villigen PSI, Switzerland
| | - M Cammarata
- Univ Rennes, CNRS, IPR (Institut de Physique de Rennes)-UMR 6251, Rennes, France. .,European Synchrotron Radiation Facility, Grenoble, France.
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9
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Morena M, Colucci P, Mancini GF, De Castro V, Peloso A, Schelling G, Campolongo P. Ketamine anesthesia enhances fear memory consolidation via noradrenergic activation in the basolateral amygdala. Neurobiol Learn Mem 2020; 178:107362. [PMID: 33333316 DOI: 10.1016/j.nlm.2020.107362] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/09/2020] [Revised: 11/17/2020] [Accepted: 12/10/2020] [Indexed: 12/15/2022]
Abstract
Trauma patients treated with ketamine during emergency care present aggravated early post- traumatic stress reaction which is highly predictive of post-traumatic stress disorder (PTSD) development and severity. The use of ketamine in the acute trauma phase may directly or indirectly interfere with neural processes of memory consolidation of the traumatic event, thus leading to the formation of maladaptive memories, a hallmark symptom of PTSD. We have recently shown that ketamine anesthesia, immediately after a traumatic event, enhances memory consolidation and leads to long-lasting alterations of social behavior in rats. Based on the evidence that ketamine induces a robust central and peripheral adrenergic/noradrenergic potentiation and that activation of this system is essential for the formation of memory for stressful events, we explored the possibility that the strong sympathomimetic action of ketamine might underlie its memory enhancing effects. We found that rats given immediate, but not delayed, post-training ketamine anesthesia (125 mg/kg) presented enhanced 48-h memory retention in an inhibitory avoidance task and that these effects were blocked by adrenal medullectomy, lesions of the locus coeruleus, systemic or intra-basolateral amygdala ß-adrenergic receptor antagonism. Thus, the memory enhancing effects of ketamine anesthesia are time-dependent and mediated by a combined peripheral-central sympathomimetic action. We elucidated a mechanism by which ketamine exacerbates acute post-traumatic reaction, possibly leading to development of PTSD symptomatology later in life. These findings will help guide for a better management of sedation/anesthesia in emergency care to promote the prophylaxis and reduce the risk of developing trauma-related disorders in trauma victims.
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Affiliation(s)
- Maria Morena
- Dept. of Physiology and Pharmacology, Sapienza University of Rome, 00185 Rome, Italy
| | - Paola Colucci
- Dept. of Physiology and Pharmacology, Sapienza University of Rome, 00185 Rome, Italy; Neurobiology of Behavior Laboratory, Santa Lucia Foundation, 00143 Rome, Italy
| | - Giulia F Mancini
- Dept. of Physiology and Pharmacology, Sapienza University of Rome, 00185 Rome, Italy; Neurobiology of Behavior Laboratory, Santa Lucia Foundation, 00143 Rome, Italy
| | - Valentina De Castro
- Dept. of Physiology and Pharmacology, Sapienza University of Rome, 00185 Rome, Italy
| | - Andrea Peloso
- Dept. of Physiology and Pharmacology, Sapienza University of Rome, 00185 Rome, Italy
| | - Gustav Schelling
- Dept. of Anaesthesiology, Ludwig-Maximilians University of Munich, 81377 Munich, Germany
| | - Patrizia Campolongo
- Dept. of Physiology and Pharmacology, Sapienza University of Rome, 00185 Rome, Italy; Neurobiology of Behavior Laboratory, Santa Lucia Foundation, 00143 Rome, Italy.
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10
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Bacellar C, Kinschel D, Mancini GF, Ingle RA, Rouxel J, Cannelli O, Cirelli C, Knopp G, Szlachetko J, Lima FA, Menzi S, Pamfilidis G, Kubicek K, Khakhulin D, Gawelda W, Rodriguez-Fernandez A, Biednov M, Bressler C, Arrell CA, Johnson PJM, Milne CJ, Chergui M. Spin cascade and doming in ferric hemes: Femtosecond X-ray absorption and X-ray emission studies. Proc Natl Acad Sci U S A 2020; 117:21914-21920. [PMID: 32848065 PMCID: PMC7486745 DOI: 10.1073/pnas.2009490117] [Citation(s) in RCA: 17] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/24/2023] Open
Abstract
The structure-function relationship is at the heart of biology, and major protein deformations are correlated to specific functions. For ferrous heme proteins, doming is associated with the respiratory function in hemoglobin and myoglobins. Cytochrome c (Cyt c) has evolved to become an important electron-transfer protein in humans. In its ferrous form, it undergoes ligand release and doming upon photoexcitation, but its ferric form does not release the distal ligand, while the return to the ground state has been attributed to thermal relaxation. Here, by combining femtosecond Fe Kα and Kβ X-ray emission spectroscopy (XES) with Fe K-edge X-ray absorption near-edge structure (XANES), we demonstrate that the photocycle of ferric Cyt c is entirely due to a cascade among excited spin states of the iron ion, causing the ferric heme to undergo doming, which we identify. We also argue that this pattern is common to a wide diversity of ferric heme proteins, raising the question of the biological relevance of doming in such proteins.
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Affiliation(s)
- Camila Bacellar
- Laboratoire de Spectroscopie Ultrarapide, Institut des Sciences et Ingéniéries Chimiques and Lausanne Centre for Ultrafast Science, Ecole Polytechnique Fédérale de Lausanne, 1015 Lausanne, Switzerland
| | - Dominik Kinschel
- Laboratoire de Spectroscopie Ultrarapide, Institut des Sciences et Ingéniéries Chimiques and Lausanne Centre for Ultrafast Science, Ecole Polytechnique Fédérale de Lausanne, 1015 Lausanne, Switzerland
| | - Giulia F Mancini
- Laboratoire de Spectroscopie Ultrarapide, Institut des Sciences et Ingéniéries Chimiques and Lausanne Centre for Ultrafast Science, Ecole Polytechnique Fédérale de Lausanne, 1015 Lausanne, Switzerland
| | - Rebecca A Ingle
- Laboratoire de Spectroscopie Ultrarapide, Institut des Sciences et Ingéniéries Chimiques and Lausanne Centre for Ultrafast Science, Ecole Polytechnique Fédérale de Lausanne, 1015 Lausanne, Switzerland
| | - Jérémy Rouxel
- Laboratoire de Spectroscopie Ultrarapide, Institut des Sciences et Ingéniéries Chimiques and Lausanne Centre for Ultrafast Science, Ecole Polytechnique Fédérale de Lausanne, 1015 Lausanne, Switzerland
| | - Oliviero Cannelli
- Laboratoire de Spectroscopie Ultrarapide, Institut des Sciences et Ingéniéries Chimiques and Lausanne Centre for Ultrafast Science, Ecole Polytechnique Fédérale de Lausanne, 1015 Lausanne, Switzerland
| | - Claudio Cirelli
- Swiss Free Electron Laser, Paul-Scherrer-Institut (PSI), 5232 Villigen PSI, Switzerland
| | - Gregor Knopp
- Swiss Free Electron Laser, Paul-Scherrer-Institut (PSI), 5232 Villigen PSI, Switzerland
| | - Jakub Szlachetko
- Institute of Nuclear Physics, Polish Academy of Sciences, 31-342 Kraków, Poland
| | | | - Samuel Menzi
- Swiss Free Electron Laser, Paul-Scherrer-Institut (PSI), 5232 Villigen PSI, Switzerland
| | - Georgios Pamfilidis
- Swiss Free Electron Laser, Paul-Scherrer-Institut (PSI), 5232 Villigen PSI, Switzerland
| | | | | | - Wojciech Gawelda
- European X-ray Free Electron Laser, D-22869 Schenefeld, Germany
- Faculty of Physics, Adam Mickiewicz University, 61-614 Poznan, Poland
| | | | - Mykola Biednov
- European X-ray Free Electron Laser, D-22869 Schenefeld, Germany
| | | | - Christopher A Arrell
- Swiss Free Electron Laser, Paul-Scherrer-Institut (PSI), 5232 Villigen PSI, Switzerland
| | - Philip J M Johnson
- Swiss Free Electron Laser, Paul-Scherrer-Institut (PSI), 5232 Villigen PSI, Switzerland
| | - Christopher J Milne
- Swiss Free Electron Laser, Paul-Scherrer-Institut (PSI), 5232 Villigen PSI, Switzerland
| | - Majed Chergui
- Laboratoire de Spectroscopie Ultrarapide, Institut des Sciences et Ingéniéries Chimiques and Lausanne Centre for Ultrafast Science, Ecole Polytechnique Fédérale de Lausanne, 1015 Lausanne, Switzerland;
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11
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Smolentsev G, Milne CJ, Guda A, Haldrup K, Szlachetko J, Azzaroli N, Cirelli C, Knopp G, Bohinc R, Menzi S, Pamfilidis G, Gashi D, Beck M, Mozzanica A, James D, Bacellar C, Mancini GF, Tereshchenko A, Shapovalov V, Kwiatek WM, Czapla-Masztafiak J, Cannizzo A, Gazzetto M, Sander M, Levantino M, Kabanova V, Rychagova E, Ketkov S, Olaru M, Beckmann J, Vogt M. Taking a snapshot of the triplet excited state of an OLED organometallic luminophore using X-rays. Nat Commun 2020; 11:2131. [PMID: 32358505 PMCID: PMC7195477 DOI: 10.1038/s41467-020-15998-z] [Citation(s) in RCA: 14] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/17/2019] [Accepted: 04/07/2020] [Indexed: 12/21/2022] Open
Abstract
OLED technology beyond small or expensive devices requires light-emitters, luminophores, based on earth-abundant elements. Understanding and experimental verification of charge transfer in luminophores are needed for this development. An organometallic multicore Cu complex comprising Cu–C and Cu–P bonds represents an underexplored type of luminophore. To investigate the charge transfer and structural rearrangements in this material, we apply complementary pump-probe X-ray techniques: absorption, emission, and scattering including pump-probe measurements at the X-ray free-electron laser SwissFEL. We find that the excitation leads to charge movement from C- and P- coordinated Cu sites and from the phosphorus atoms to phenyl rings; the Cu core slightly rearranges with 0.05 Å increase of the shortest Cu–Cu distance. The use of a Cu cluster bonded to the ligands through C and P atoms is an efficient way to keep structural rigidity of luminophores. Obtained data can be used to verify computational methods for the development of luminophores. OLED materials based on thermally activated delayed fluorescence have promising efficiency. Here, the authors investigate an organometallic multicore Cu complex as luminophore, by pump-probe X-ray techniques at three different facilities deriving a complete picture of the charge transfer in the triplet excited state.
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Affiliation(s)
| | | | - Alexander Guda
- The Smart Materials Research Institute, Southern Federal University, 344090, Rostov-on-Don, Russia
| | - Kristoffer Haldrup
- Physics Department, Technical University of Denmark, DK-2800, Kongens Lyngby, Denmark
| | - Jakub Szlachetko
- Institute of Nuclear Physics, Polish Academy of Sciences, 31-342, Kraków, Poland
| | | | | | - Gregor Knopp
- Paul Scherrer Institute, 5232, Villigen, Switzerland
| | - Rok Bohinc
- Paul Scherrer Institute, 5232, Villigen, Switzerland
| | - Samuel Menzi
- Paul Scherrer Institute, 5232, Villigen, Switzerland
| | | | - Dardan Gashi
- Paul Scherrer Institute, 5232, Villigen, Switzerland
| | - Martin Beck
- Paul Scherrer Institute, 5232, Villigen, Switzerland
| | | | - Daniel James
- Paul Scherrer Institute, 5232, Villigen, Switzerland
| | - Camila Bacellar
- Paul Scherrer Institute, 5232, Villigen, Switzerland.,Laboratory for Ultrafast Spectroscopy, Lausanne Center for Ultrafast Science (LACUS), École Polytechnique Fédérale de Lausanne, CH-1015, Lausanne, Switzerland
| | - Giulia F Mancini
- Paul Scherrer Institute, 5232, Villigen, Switzerland.,Laboratory for Ultrafast Spectroscopy, Lausanne Center for Ultrafast Science (LACUS), École Polytechnique Fédérale de Lausanne, CH-1015, Lausanne, Switzerland
| | - Andrei Tereshchenko
- The Smart Materials Research Institute, Southern Federal University, 344090, Rostov-on-Don, Russia
| | - Victor Shapovalov
- The Smart Materials Research Institute, Southern Federal University, 344090, Rostov-on-Don, Russia
| | - Wojciech M Kwiatek
- Institute of Nuclear Physics, Polish Academy of Sciences, 31-342, Kraków, Poland
| | | | - Andrea Cannizzo
- Institute of Applied Physics, University of Bern, 3012, Bern, Switzerland
| | - Michela Gazzetto
- Institute of Applied Physics, University of Bern, 3012, Bern, Switzerland
| | - Mathias Sander
- ESRF, The European Synchrotron, 71 Avenue des Martyrs, 38000, Grenoble, France
| | - Matteo Levantino
- ESRF, The European Synchrotron, 71 Avenue des Martyrs, 38000, Grenoble, France
| | - Victoria Kabanova
- ESRF, The European Synchrotron, 71 Avenue des Martyrs, 38000, Grenoble, France
| | - Elena Rychagova
- G. A. Razuvaev Institute of Organometallic Chemistry, Russian Academy of Sciences, Tropinina, 49, Nizhny Novgorod, 603950, Russia
| | - Sergey Ketkov
- G. A. Razuvaev Institute of Organometallic Chemistry, Russian Academy of Sciences, Tropinina, 49, Nizhny Novgorod, 603950, Russia
| | - Marian Olaru
- Institute of Inorganic Chemistry and Crystallography, University of Bremen, Leobenerstr. 7, 28359, Bremen, Germany
| | - Jens Beckmann
- Institute of Inorganic Chemistry and Crystallography, University of Bremen, Leobenerstr. 7, 28359, Bremen, Germany
| | - Matthias Vogt
- Institute of Inorganic Chemistry and Crystallography, University of Bremen, Leobenerstr. 7, 28359, Bremen, Germany. .,Martin-Luther-Universität Halle-Wittenberg Naturwissenschaftliche Fakultät II, Institut für Chemie, Anorganische Chemie, D-06120, Halle, Germany.
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12
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Cannelli O, Bacellar C, Ingle RA, Bohinc R, Kinschel D, Bauer B, Ferreira DS, Grolimund D, Mancini GF, Chergui M. Toward time-resolved laser T-jump/X-ray probe spectroscopy in aqueous solutions. Struct Dyn 2019; 6:064303. [PMID: 31832487 PMCID: PMC6906120 DOI: 10.1063/1.5129626] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 09/30/2019] [Accepted: 11/13/2019] [Indexed: 06/10/2023]
Abstract
Most chemical and biochemical reactions in nature and in industrial processes are driven by thermal effects that bring the reactants above the energy barrier for reaction. In aqueous solutions, this process can also be triggered by the laser driven temperature jump (T-jump) method, in which the water vibrational (stretch, bend, or combination) modes are excited by a short laser pulse, leading to a temperature increase in the irradiated volume within a few picoseconds. The combination of the laser T-jump with X-ray spectroscopic probes would add element-specificity as well as sensitivity to the structure, the oxidation state, and the spin state of the intermediates of reactions. Here, we present preliminary results of a near infrared pump/X-ray absorption spectroscopy probe to study the ligand exchange of an octahedral aqueous Cobalt complex, which is known to pass through intermediate steps yielding tetrahedral chlorinated as final species. The structural changes of the chemical reaction are monitored with great sensitivity, even in the presence of a mild local increase in temperature. This work opens perspectives for the study of non-light-driven reactions using time-resolved X-ray spectroscopic methods.
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Affiliation(s)
- O Cannelli
- Laboratory of Ultrafast Spectroscopy, Lausanne Center for Ultrafast Science (LACUS), École Polytechnique Fédérale de Lausanne, CH-1015 Lausanne, Switzerland
| | - C Bacellar
- Laboratory of Ultrafast Spectroscopy, Lausanne Center for Ultrafast Science (LACUS), École Polytechnique Fédérale de Lausanne, CH-1015 Lausanne, Switzerland
| | - R A Ingle
- Laboratory of Ultrafast Spectroscopy, Lausanne Center for Ultrafast Science (LACUS), École Polytechnique Fédérale de Lausanne, CH-1015 Lausanne, Switzerland
| | - R Bohinc
- Laboratory of Femtochemistry-MicroXAS, Paul Scherrer Institut, 5232 PSI Villigen, Switzerland
| | - D Kinschel
- Laboratory of Ultrafast Spectroscopy, Lausanne Center for Ultrafast Science (LACUS), École Polytechnique Fédérale de Lausanne, CH-1015 Lausanne, Switzerland
| | - B Bauer
- Laboratory of Ultrafast Spectroscopy, Lausanne Center for Ultrafast Science (LACUS), École Polytechnique Fédérale de Lausanne, CH-1015 Lausanne, Switzerland
| | - D S Ferreira
- Laboratory of Femtochemistry-MicroXAS, Paul Scherrer Institut, 5232 PSI Villigen, Switzerland
| | - D Grolimund
- Laboratory of Femtochemistry-MicroXAS, Paul Scherrer Institut, 5232 PSI Villigen, Switzerland
| | - G F Mancini
- Laboratory of Ultrafast Spectroscopy, Lausanne Center for Ultrafast Science (LACUS), École Polytechnique Fédérale de Lausanne, CH-1015 Lausanne, Switzerland
| | - M Chergui
- Laboratory of Ultrafast Spectroscopy, Lausanne Center for Ultrafast Science (LACUS), École Polytechnique Fédérale de Lausanne, CH-1015 Lausanne, Switzerland
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13
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Svetina C, Mankowsky R, Knopp G, Koch F, Seniutinas G, Rösner B, Kubec A, Lebugle M, Mochi I, Beck M, Cirelli C, Krempasky J, Pradervand C, Rouxel J, Mancini GF, Zerdane S, Pedrini B, Esposito V, Ingold G, Wagner U, Flechsig U, Follath R, Chergui M, Milne C, Lemke HT, David C, Beaud P. Towards X-ray transient grating spectroscopy. Opt Lett 2019; 44:574-577. [PMID: 30702682 DOI: 10.1364/ol.44.000574] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/07/2018] [Accepted: 12/22/2018] [Indexed: 06/09/2023]
Abstract
The extension of transient grating spectroscopy to the x-ray regime will create numerous opportunities, ranging from the study of thermal transport in the ballistic regime to charge, spin, and energy transfer processes with atomic spatial and femtosecond temporal resolution. Studies involving complicated split-and-delay lines have not yet been successful in achieving this goal. Here we propose a novel, simple method based on the Talbot effect for converging beams, which can easily be implemented at current x-ray free electron lasers. We validate our proposal by analyzing printed interference patterns on polymethyl methacrylate and gold samples using ∼3 keV X-ray pulses.
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14
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Bevis C, Robert KJ, Mancini GF, Gardner D, Shanblatt E, Knobloch J, Frazer T, Hernandez-Charpak JN, Mayor BA, Tanksalvala M, Porter C, Adams D, Kapteyn H, Murnane MM. Ultrafast dynamic imaging of thermal and acoustic dynamics in nanosystems using a tabletop high harmonic source. EPJ Web Conf 2019. [DOI: 10.1051/epjconf/201920504005] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022] Open
Abstract
We demonstrate the first stroboscopic full-field EUV nanoscope using high harmonics. We image the propagation of thermal and surface acoustic waves in nickel with 80nm transverse, 0.5 Å axial, and 10 fs resolution.
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15
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Mancini GF, Pennacchio F, Latychevskaia T, Reguera J, Stellacci F, Carbone F. Direct observation of photo-mechanical stiffness in alkanethiol-capped gold nanoparticles supracrystals by ultrafast small-angle electron diffraction. EPJ Web Conf 2019. [DOI: 10.1051/epjconf/201920504004] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022] Open
Abstract
We demonstrate that ultrastiff bonding between nanoparticles can be engineered by ad hoc assemblies of ligands, reaching strengths comparable to that of strong covalent bonds. Our observation relies on femtosecond small-angle electron diffraction.
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Karl RM, Mancini GF, Knobloch JL, Frazer TD, Hernandez-Charpak JN, Abad B, Gardner DF, Shanblatt ER, Tanksalvala M, Porter CL, Bevis CS, Adams DE, Kapteyn HC, Murnane MM. Full-field imaging of thermal and acoustic dynamics in an individual nanostructure using tabletop high harmonic beams. Sci Adv 2018; 4:eaau4295. [PMID: 30345364 PMCID: PMC6195334 DOI: 10.1126/sciadv.aau4295] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/09/2018] [Accepted: 09/12/2018] [Indexed: 05/11/2023]
Abstract
Imaging charge, spin, and energy flow in materials is a current grand challenge that is relevant to a host of nanoenhanced systems, including thermoelectric, photovoltaic, electronic, and spin devices. Ultrafast coherent x-ray sources enable functional imaging on nanometer length and femtosecond timescales particularly when combined with advances in coherent imaging techniques. Here, we combine ptychographic coherent diffractive imaging with an extreme ultraviolet high harmonic light source to directly visualize the complex thermal and acoustic response of an individual nanoscale antenna after impulsive heating by a femtosecond laser. We directly image the deformations induced in both the nickel tapered nanoantenna and the silicon substrate and see the lowest-order generalized Lamb wave that is partially confined to a uniform nanoantenna. The resolution achieved-sub-100 nm transverse and 0.5-Å axial spatial resolution, combined with ≈10-fs temporal resolution-represents a significant advance in full-field dynamic imaging capabilities. The tapered nanoantenna is sufficiently complex that a full simulation of the dynamic response would require enormous computational power. We therefore use our data to benchmark approximate models and achieve excellent agreement between theory and experiment. In the future, this work will enable three-dimensional functional imaging of opaque materials and nanostructures that are sufficiently complex that their functional properties cannot be predicted.
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Mancini GF, Karl RM, Shanblatt ER, Bevis CS, Gardner DF, Tanksalvala MD, Russell JL, Adams DE, Kapteyn HC, Badding JV, Mallouk TE, Murnane MM. Colloidal crystal order and structure revealed by tabletop extreme ultraviolet scattering and coherent diffractive imaging. Opt Express 2018; 26:11393-11406. [PMID: 29716059 DOI: 10.1364/oe.26.011393] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/06/2018] [Accepted: 04/03/2018] [Indexed: 06/08/2023]
Abstract
Colloidal crystals with specific electronic, optical, magnetic, vibrational properties, can be rationally designed by controlling fundamental parameters such as chemical composition, scale, periodicity and lattice symmetry. In particular, silica nanospheres -which assemble to form colloidal crystals- are ideal for this purpose, because of the ability to infiltrate their templates with semiconductors or metals. However characterization of these crystals is often limited to techniques such as grazing incidence small-angle scattering that provide only global structural information and also often require synchrotron sources. Here we demonstrate small-angle Bragg scattering from nanostructured materials using a tabletop-scale setup based on high-harmonic generation, to reveal important information about the local order of nanosphere grains, separated by grain boundaries and discontinuities. We also apply full-field quantitative ptychographic imaging to visualize the extended structure of a silica close-packed nanosphere multilayer, with thickness information encoded in the phase. These combined techniques allow us to simultaneously characterize the silica nanospheres size, their symmetry and distribution within single colloidal crystal grains, the local arrangement of nearest-neighbor grains, as well as to quantitatively determine the number of layers within the sample. Key to this advance is the good match between the high harmonic wavelength used (13.5nm) and the high transmission, high scattering efficiency, and low sample damage of the silica colloidal crystal at this wavelength. As a result, the relevant distances in the sample - namely, the interparticle distance (≈124nm) and the colloidal grains local arrangement (≈1μm) - can be investigated with Bragg coherent EUV scatterometry and ptychographic imaging within the same experiment simply by tuning the EUV spot size at the sample plane (5μm and 15μm respectively). In addition, the high spatial coherence of high harmonics light, combined with advances in imaging techniques, makes it possible to image near-periodic structures quantitatively and nondestructively, and enables the observation of the extended order of quasi-periodic colloidal crystals, with a spatial resolution better than 20nm. In the future, by harnessing the high time-resolution of tabletop high harmonics, this technique can be extended to dynamically image the three-dimensional electronic, magnetic, and transport properties of functional nanosystems.
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Pennacchio F, Vanacore GM, Mancini GF, Oppermann M, Jayaraman R, Musumeci P, Baum P, Carbone F. Design and implementation of an optimal laser pulse front tilting scheme for ultrafast electron diffraction in reflection geometry with high temporal resolution. Struct Dyn 2017; 4:044032. [PMID: 28713841 PMCID: PMC5491388 DOI: 10.1063/1.4991483] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 03/10/2017] [Accepted: 06/21/2017] [Indexed: 06/07/2023]
Abstract
Ultrafast electron diffraction is a powerful technique to investigate out-of-equilibrium atomic dynamics in solids with high temporal resolution. When diffraction is performed in reflection geometry, the main limitation is the mismatch in group velocity between the overlapping pump light and the electron probe pulses, which affects the overall temporal resolution of the experiment. A solution already available in the literature involved pulse front tilt of the pump beam at the sample, providing a sub-picosecond time resolution. However, in the reported optical scheme, the tilted pulse is characterized by a temporal chirp of about 1 ps at 1 mm away from the centre of the beam, which limits the investigation of surface dynamics in large crystals. In this paper, we propose an optimal tilting scheme designed for a radio-frequency-compressed ultrafast electron diffraction setup working in reflection geometry with 30 keV electron pulses containing up to 105 electrons/pulse. To characterize our scheme, we performed optical cross-correlation measurements, obtaining an average temporal width of the tilted pulse lower than 250 fs. The calibration of the electron-laser temporal overlap was obtained by monitoring the spatial profile of the electron beam when interacting with the plasma optically induced at the apex of a copper needle (plasma lensing effect). Finally, we report the first time-resolved results obtained on graphite, where the electron-phonon coupling dynamics is observed, showing an overall temporal resolution in the sub-500 fs regime. The successful implementation of this configuration opens the way to directly probe structural dynamics of low-dimensional systems in the sub-picosecond regime, with pulsed electrons.
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Affiliation(s)
- Francesco Pennacchio
- Laboratory for Ultrafast Microscopy and Electron Scattering, École Polytechnique Fédérale de Lausanne, CH-1015 Lausanne, Switzerland
| | - Giovanni M Vanacore
- Laboratory for Ultrafast Microscopy and Electron Scattering, École Polytechnique Fédérale de Lausanne, CH-1015 Lausanne, Switzerland
| | - Giulia F Mancini
- JILA, University of Colorado, 440 UCB, Boulder, Colorado 80309-0440, USA
| | - Malte Oppermann
- Laboratory of Ultrafast Spectroscopy, École Polytechnique Fédérale de Lausanne, CH-1015 Lausanne, Switzerland
| | - Rajeswari Jayaraman
- Laboratory for Ultrafast Microscopy and Electron Scattering, École Polytechnique Fédérale de Lausanne, CH-1015 Lausanne, Switzerland
| | - Pietro Musumeci
- Particle Beam Physics Laboratory, Department of Physics and Astronomy, UCLA, Los Angeles, California 90095, USA
| | - Peter Baum
- Ludwig-Maximilians-Universität München, Am Coulombwall 1, 85748 Garching, Germany
| | - Fabrizio Carbone
- Laboratory for Ultrafast Microscopy and Electron Scattering, École Polytechnique Fédérale de Lausanne, CH-1015 Lausanne, Switzerland
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Shanblatt ER, Porter CL, Gardner DF, Mancini GF, Karl RM, Tanksalvala MD, Bevis CS, Vartanian VH, Kapteyn HC, Adams DE, Murnane MM. Quantitative Chemically Specific Coherent Diffractive Imaging of Reactions at Buried Interfaces with Few Nanometer Precision. Nano Lett 2016; 16:5444-5450. [PMID: 27447192 DOI: 10.1021/acs.nanolett.6b01864] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/06/2023]
Abstract
We demonstrate quantitative, chemically specific imaging of buried nanostructures, including oxidation and diffusion reactions at buried interfaces, using nondestructive tabletop extreme ultraviolet (EUV) coherent diffractive imaging (CDI). Copper nanostructures inlaid in SiO2 are coated with 100 nm of aluminum, which is opaque to visible light and thick enough that neither visible microscopy nor atomic force microscopy can image the buried interface. Short wavelength high harmonic beams can penetrate the aluminum layer, yielding high-contrast images of the buried structures. Quantitative analysis shows that the reflected EUV light is extremely sensitive to the formation of multiple oxide layers, as well as interdiffusion of materials occurring at the metal-metal and metal-insulator boundaries deep within the nanostructure with few nanometers precision.
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Affiliation(s)
| | - Christina L Porter
- JILA, University of Colorado , 440 UCB, Boulder, Colorado 80309-0440, United States
| | - Dennis F Gardner
- JILA, University of Colorado , 440 UCB, Boulder, Colorado 80309-0440, United States
| | - Giulia F Mancini
- JILA, University of Colorado , 440 UCB, Boulder, Colorado 80309-0440, United States
| | - Robert M Karl
- JILA, University of Colorado , 440 UCB, Boulder, Colorado 80309-0440, United States
| | | | - Charles S Bevis
- JILA, University of Colorado , 440 UCB, Boulder, Colorado 80309-0440, United States
| | - Victor H Vartanian
- SUNY Poly SEMATECH , 257 Fuller Road, Suite 2200, Albany, New York 12203, United States
| | - Henry C Kapteyn
- JILA, University of Colorado , 440 UCB, Boulder, Colorado 80309-0440, United States
| | - Daniel E Adams
- JILA, University of Colorado , 440 UCB, Boulder, Colorado 80309-0440, United States
| | - Margaret M Murnane
- JILA, University of Colorado , 440 UCB, Boulder, Colorado 80309-0440, United States
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Latychevskaia T, Mancini GF, Carbone F. The role of the coherence in the cross-correlation analysis of diffraction patterns from two-dimensional dense mono-disperse systems. Sci Rep 2015; 5:16573. [PMID: 26577031 PMCID: PMC4649615 DOI: 10.1038/srep16573] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/26/2015] [Accepted: 09/09/2015] [Indexed: 01/31/2023] Open
Abstract
The investigation of the static and dynamic structural properties of colloidal systems relies on techniques capable of atomic resolution in real space and femtosecond resolution in time. Recently, the cross-correlation function (CCF) analysis of both X-rays and electron diffraction patterns from dilute and dense aggregates has demonstrated the ability to retrieve information on the sample’s local order and symmetry. Open questions remain regarding the role of the beam coherence in the formation of the diffraction pattern and the properties of the CCF, especially in dense systems. Here, we simulate the diffraction patterns of dense two-dimensional monodisperse systems of different symmetries, varying the transverse coherence of the probing wave, and analyze their CCF. We study samples with different symmetries at different size scale, as for example, pentamers arranged into a four-fold lattice where each pentamer is surrounded by triangular lattices, both ordered and disordered. In such systems, different symmetry modulations are arising in the CCF at specific scattering vectors. We demonstrate that the amplitude of the CCF is a fingerprint of the degree of the ordering in the sample and that at partial transverse coherence, the CCF of a dense sample corresponds to that of an individual scattering object.
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Affiliation(s)
- T Latychevskaia
- Physics Department, University of Zurich, Winterthurerstrasse 190, 8057 Zurich, Switzerland
| | - G F Mancini
- Laboratory for Ultrafast Microscopy and Electron Scattering, Institute of Condensed Matter Physics, École Polytechnique Fédérale de Lausanne, CH-1015 Lausanne, Switzerland
| | - F Carbone
- Laboratory for Ultrafast Microscopy and Electron Scattering, Institute of Condensed Matter Physics, École Polytechnique Fédérale de Lausanne, CH-1015 Lausanne, Switzerland
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Karl R, Bevis C, Lopez-Rios R, Reichanadter J, Gardner D, Porter C, Shanblatt E, Tanksalvala M, Mancini GF, Murnane M, Kapteyn H, Adams D. Spatial, spectral, and polarization multiplexed ptychography. Opt Express 2015; 23:30250-30258. [PMID: 26698505 DOI: 10.1364/oe.23.030250] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/05/2023]
Abstract
We introduce a novel coherent diffraction imaging technique based on ptychography that enables simultaneous full-field imaging of multiple, spatially separate, sample locations. This technique only requires that diffracted light from spatially separated sample sites be mutually incoherent at the detector, which can be achieved using multiple probes that are separated either by wavelength or by orthogonal polarization states. This approach enables spatially resolved polarization spectroscopy from a single ptychography scan, as well as allowing a larger field of view to be imaged without loss in spatial resolution. Further, we compare the numerical efficiency of the multi-mode ptychography algorithm with a single mode algorithm.
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