Ivo Vinklárek

Alexander von Humboldt Fellow & Postdoctoral researcher

Center for Free-Electron Laser Science (CFEL)
Deutsches Elektronen-Synchrotron DESY
Notkestrasse 85 (building 99a, room O3.005)
22607 Hamburg
Germany

Imaging chemical dynamics

ivo.vinklarek@cfel.de

+49-40-8998 6327

Research

Curriculum Vitae

since 10-2023	Alexander von Humboldt Fellow at the Center for Free Electron Laser Science, DESY, Hamburg
since 10-2022	Postdoctoral researcher at the Center for Free Electron Laser Science, DESY, Hamburg
2018–2022	PhD Student at J. Heyrovský Institute of Physical Chemistry, Academy of Science of the Czech Republic, Praha, Czech Republic; Thesis title: UV-IR Photochemistry in molecules and clusters investigated by velocity map imaging
2015–2017	Master in Chemical Physics at Charles University, Praha, Czech Republic

Publications

Poterya, V. ; Vinklárek, I. S. ; Pysanenko, A. ; Pluhařová, E. ; Fárník, M.
Uptake of Molecules by Polyaromatic Hydrocarbon Nanoparticles
ACS earth and space chemistry 8(2), 369-380 (2024) [10.1021/acsearthspacechem.3c00327]2024 Fulltext BibTeX | EndNote: XML, Text | RIS

Garg, D. ; Chopra, P. ; Lee, J. W. L. ; Tikhonov, D. (Corresponding author) ; Kumar, S. ; Akcaalan, O. ; Allum, F. ; Boll, R. ; Butler, A. ; Erk, B. ; Gougoula, E. ; Gruet, S. P. ; He, L. ; Heathcote, D. ; Jones, E. ; Kazemi, M. M. ; Lahl, J. ; Lemmens, A. ; Liu, Z. ; Loru, D. ; Maclot, S. ; Mason, R. ; Merrick, J. ; Mueller, E. ; Mullins, T. ; Papadopoulou, C. ; Passow, C. ; Peschel, J. ; Plach, M. ; Ramm, D. ; Robertson, P. ; Rompotis, D. ; Pinto Simao, A. ; Steber, A. ; Tajalli Seifi, A. ; Trippel, S. ; Tul-Noor, A. ; Vadassery, N. ; Vinklarek, I. ; Techert, S. ; Küpper, J. ; Rijs, A. ; Rolles, D. ; Brouard, M. ; Bari, S. ; Eng-Johnsson, P. ; Vallance, C. ; Burt, M. ; Manschwetus, B. ; Schnell, M.
Ultrafast dynamics of polycyclic aromatic hydrocarbons initiated by highly intense laser fields
Physical chemistry, chemical physics 26(30), 20261-20272 (2024) [10.1039/D3CP05063G]2024 Embargoed OpenAccess Files BibTeX | EndNote: XML, Text | RIS

Vinklarek, I. ; Bromberger, H. ; Vadassery, N. ; Jin, W. ; Küpper, J. (Corresponding author) ; Trippel, S. (Corresponding author)
Reaction Pathways of Water Dimer Following Single Ionization
The journal of physical chemistry / A 128(9), 1593-1599 (2024) [10.1021/acs.jpca.3c07958]2024 OpenAccess Files Fulltext BibTeX | EndNote: XML, Text | RIS

Janoš, J. ; Vinklarek, I. ; Rakovský, J. ; Mukhopadhyay, D. P. ; Curchod, B. F. E. ; Fárník, M. (Corresponding author) ; Slavíček, P. (Corresponding author)
On the Wavelength-Dependent Photochemistry of the Atmospheric Molecule CF 3 COCl
ACS earth and space chemistry XXX, acsearthspacechem.3c00196 (2023) [10.1021/acsearthspacechem.3c00196]2023 Fulltext BibTeX | EndNote: XML, Text | RIS

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Breakthrough in laser-alignment for macromolecular single-particle imaging

10 April 2025

Single-particle diffractive imaging (SPI) using X-ray free-electron lasers allows researchers to reconstruct the structure of nanoparticles and biomolecules. However, the technique often requires imaging up to several billion nanoparticles to produce the image and imposes limitations on its clarity and sharpness. Researchers at the Center for Free-Electron Laser Science at DESY, together with international colleagues, recently demonstrated that laser-induced alignment can indeed be achieved to significantly improve molecular imaging techniques. This geometric confinement of the molecules in the x-ray-imaging experiment will greatly facilitate the recovery of the molecular orientation and, therefore, the structure retrieval. It thus overcomes a significant challenge in single-particle diffractive imaging. This novel development further paves the way for solving the three-dimensional structures of proteins and other macromolecules using SPI.

Timepix3: single-pixel multi-hit energy-measurement behaviour

13 November 2024

The event-driven hybrid-pixel detector readout chip, Timepix3, has the ability to simultaneously measure the time of an event on the nanosecond timescale and the energy deposited in the sensor. However, the behaviour of the system when two events are recorded in quick succession of each other on the same pixel was not studied in detail previously. We present experimental measurements, circuit simulations, and an empirical model for the impact of a preceding event on this energy measurements, which can result in a loss as high as 70%. Accounting for this effect enables more precise compensation, particularly for phenomena like timewalk. This results in significant improvements in time resolution — in the best case, multiple tens of nanoseconds — when two events happen in rapid succession.

Recent Publications

Journal Article Peravali, S. K. (Corresponding author)CFEL*Extern* ; Samanta, A. K.CFEL*XFEL.EU*DESY* ; Amin, M.CFEL*Extern* ; Neumann, P.Extern*DESY* ; Küpper, J.CFEL*XFEL.EU*DESY* ; Breuer, M. (Corresponding author)CFEL*
An improved numerical simulation methodology for nanoparticle injection through aerodynamic lens systems
Physics of fluids 37, 033380 (2025) [10.1063/5.0260295]2025 OpenAccess Files BibTeX | EndNote: XML, Text | RIS

Journal Article Amin, M.CFEL*Extern* ; Hartmann, J.-M. ; Samanta, A. K.CFEL*XFEL.EU*DESY* ; Küpper, J. (Corresponding author)CFEL*XFEL.EU*DESY*
Laser-induced alignment of nanoparticles and macromolecules for single-particle-imaging applications
Journal of the American Chemical Society 147(9), 7445 - 7451 (2025) [10.1021/jacs.4c15679]2025 Embargoed OpenAccess Files BibTeX | EndNote: XML, Text | RIS

Journal Article Ekeberg, T.CFEL*Extern*XFEL.EU* ; Assalauova, D.Extern*XFEL.EU*DESY* ; Bielecki, J.XFEL.EU* ; Boll, R.XFEL.EU* ; Daurer, B. J.Extern* ; Eichacker, L. A.Extern*XFEL.EU* ; Franken, L. E.CSSB* ; Galli, D. E.XFEL.EU* ; Gelisio, L.CFEL*XFEL.EU*DESY* ; Gumprecht, L.CFEL*XFEL.EU*DESY* ; Gunn, L. H.Extern*XFEL.EU* ; Hajdu, J.Extern* ; Hartmann, R.Extern* ; Hasse, D. ; Ignatenko, A.CFEL*XFEL.EU*DESY* ; Koliyadu, J.XFEL.EU*DESY* ; Kulyk, O.Extern* ; Kurta, R.XFEL.EU* ; Kuster, M.XFEL.EU* ; Lugmayr, W.CSSB* ; Lübke, J.CFEL*Extern*XFEL.EU* ; Mancuso, A. P.Extern*XFEL.EU* ; Mazza, T.XFEL.EU* ; Nettelblad, C.Extern*XFEL.EU* ; Ovcharenko, Y.XFEL.EU* ; Rivas, D. E.XFEL.EU* ; Rose, M.Extern*XFEL.EU* ; Samanta, A. K.CFEL*XFEL.EU*DESY* ; Schmidt, P.XFEL.EU* ; Sobolev, E.XFEL.EU*EMBL* ; Timneanu, N.Extern* ; Usenko, S.XFEL.EU* ; Westphal, D.Extern* ; Wollweber, T.Extern* ; Worbs, L.CFEL*XFEL.EU*DESY* ; Xavier, P. L. ; Yousef, H.XFEL.EU* ; Ayyer, K.CFEL*MPG*XFEL.EU* ; Chapman, H. N.CFEL*XFEL.EU*DESY* ; Sellberg, J. A.Extern*XFEL.EU* ; Seuring, C.CFEL*CSSB*XFEL.EU* ; Vartanyants, I. A.XFEL.EU*DESY* ; Küpper, J.CFEL*XFEL.EU*DESY* ; Meyer, M. ; Maia, F. R. N. C. (Corresponding author)Extern*XFEL.EU*
Observation of a single protein by ultrafast X-ray diffraction
Light 13(1), 15 (2024) [10.1038/s41377-023-01352-7]2024 OpenAccess Files BibTeX | EndNote: XML, Text | RIS