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Jos Oomens (HMFL-FELIX)08/07/2025, 14:00
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Wouter Stumpel (HMFL-FELIX), Andries den Ouden (HFML-FELIX)08/07/2025, 14:20
In this short contribution, we will briefly describe the general characteristics of our free-electron lasers and magnet installations. We will also address recent upgrades of the infrastructure, such as the replacement of the FEL modulator in January 2025 or the start of cooldown of the hybrid magnet aimed to operate at 45 T.
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Julianna Palotas (University of Edinburgh)08/07/2025, 14:40
Fullerenes, in both neutral and ionized forms, are the largest molecular species identified in the interstellar medium. Among their many derivatives, ionized species—including protonated, oxidized, and other exohedral variants— have attracted considerable astrophysical interest. Recent advances in synthesis methods have enabled the encapsulation of small molecules within fullerene cages,...
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Wendy Brown (University of Sussex, UK)08/07/2025, 16:00
Ice-covered dust grains are found in many astrophysically relevant environments, including comets, proto-planetary disks and the interstellar medium, and provide surfaces upon which many of the molecules found in space can be made. These ice-covered dust grains undergo so called processing by bombardment with particles such as atoms and ions, by irradiation with light and by heating (thermal...
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Dr Maurice Bal (HFML-FELIX)08/07/2025, 16:40
The abstract for my talk can be found in the attachment.
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América Torres Boy08/07/2025, 17:00
Phosphates are ubiquitous in nature and play a crucial role in biochemical processes such as protein synthesis, metabolism, and energy production. One unique property of phosphoric acid is that it exhibits the highest intrinsic proton conductivity of any known substance and is used in low-temperature batteries as well as in phosphoric acid fuel cells (PAFCs). The detailed mechanism of proton...
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Kartrin Dulitz (Universität Innsbruck)09/07/2025, 09:00
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Vincent Richardson (Department of Physics, University of Liverpool)09/07/2025, 09:40
The study of gas-phase ion-neutral reactions is a subject of significant research interest for astrochemistry, due to their higher reaction rates at low temperatures and pressures than the equivalent neutral-neutral processes [1]. Furthermore, following recent increases in observational capabilities, a growing appreciation has developed regarding the importance of isomers in astrochemistry...
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Sandra Lang (Ulm University)09/07/2025, 10:00
Magnesium-silicates are ubiquitously found as small dust grains throughout the interstellar medium (ISM). Formed in the dense and warm environments of dying (evolved) oxygen-rich stars, they are subject to sporadic energetic processing in the diffuse ISM, where they are broken up into ultra-small silicate fragments. Such fragments likely serve as seeds for subsequent re-condensation in dense...
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Peter Rubli (Department of Chemistry, University of Oxford)09/07/2025, 10:20
Please find attached my abstract for an oral presentation
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Jianting Ye (University of Groningen)09/07/2025, 11:30
Recent advances in two-dimensional materials have opened new avenues for exploring unconventional superconductivity in engineered multilayers. Among them, transition metal dichalcogenides (TMDs), such as NbSe2, offer a unique platform to investigate Ising superconductivity and quantum phase transitions under strong spin-orbit coupling. In this talk, I will show Fulde-Ferrell-Larkin-Ovchinnikov...
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Amirmostafa Amirjani (Quantum Solid-State Physics, Department of Physics and Astronomy, KU Leuven, Celestijnenlaan 200d, 3001, Leuven, Belgium)09/07/2025, 12:10
The interaction of light with metasurfaces, two-dimensional arrays of subwavelength-spaced nanostructures, or "meta-atoms", paves the way for the advanced study of their optical properties. Metasurfaces can be meticulously designed to introduce desired localized and spatially varying electromagnetic responses, thereby collectively imparting arbitrary phase, amplitude, and polarization...
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Dorothee Mader (Fritz-Haber-Institut)09/07/2025, 12:30
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Michael Först09/07/2025, 14:00
see attached file
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Vittorio Bellani (Department of Physics "A. Volta", University of Pavia, 27100 Pavia, Italy)09/07/2025, 14:40
We report experimental measurements of the fractional quantum Hall effect (FQHE) in twisted graphene aligned with hexagonal boron nitride, where the formation of a moiré superlattice and sublattice symmetry breaking gives rise to a rich landscape of correlated electronic phases We report on the FQHE at filling factors ν = k/2 and ν = k/3 with ν > 1, and on the composite fermions at in the ν <...
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The Linh Pham (KU Leuven)09/07/2025, 15:00
The rapid evolution of photonics has enabled unprecedented control over light-matter interactions on the picosecond time scale and even faster, with plasmonic metasurfaces (MSs) emerging as key components in next-generation optoelectronic devices. MSs composed of periodic gold nanostructures patterned on silicon substrates can offer both localized surface plasmon resonance (LSPR) and...
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Christian van der Linde (Universität Innsbruck, Institut für Ionenphysik und Angewandte Physik)09/07/2025, 16:00
Transition metals play a role in astrochemistry, in particular, transition metal complexes are proposed to be astrochemically relevant. Iron is the most abundant transition metal in the interstellar medium (ISM), but only little amounts of pure atomic iron are present.[1] The oxide-hydroxide species [Fe,xO,yH]+, and especially [FeOH]+, are potential iron compounds in the ISM, but spectroscopic...
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Jelle Schuurman09/07/2025, 16:20
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Abhinav Bairagi (Radboud University)09/07/2025, 16:40
Understanding the mechanisms of electrochemical reactions is essential for numerous applications, including the development of efficient electrocatalysts, redox flow batteries, and electrosynthesis processes. Traditional techniques like voltammetry and bulk electrolysis, while useful, offer limited molecular-level insights into these reactions. As a result, complementary spectroscopic methods...
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Christian Haakansson (Department of Chemistry, University of Oxford)10/07/2025, 09:00
Please find attached abstract for oral presentation (invited).
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Sarah Madlener (Universität Innsbruck, Institut für Ionenphysik und Angewandte Physik)10/07/2025, 09:40
Transition metals and their oxides are relevant for fields like materials science or biochemistry, and have manifold industrial applications. They can serve as catalysts for water activation as an early step in the formation of molecular hydrogen [1]. Tantalum is a third row transition metal and in the past a variety of studies were performed on reactions involving water [2]. In order to be...
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Yufei Zhang (KU Leuven)10/07/2025, 10:00
Metal clusters in the gas phase exhibit unique properties, such as size dependent reactivities. Those can be studied with mass spectrometry and laser spectroscopy. Along with direct comparison with quantum chemical calculation modelling, metal clusters excellent model systems for investigating chemical reactions and catalytic processes taking place at low-coordinated sites. Previous studies...
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Melanie Schnell10/07/2025, 10:20
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Dirk Lefeber (Radboud University Medical Center)10/07/2025, 11:20
Human metabolism generates ten thousands of small molecules regulating important functions in our physiology. Dysruptions of metabolic enzymes by genetic mutations result in severe, debilitating diseases, called Inborn Metabolic Disorders (IMDs). IMDs are among the top 3 of most deadly diseases in children and therapies are available for only ~15%.
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Modern high-resolution mass spectrometry... -
David Battke (Fritz-Haber-Institut)10/07/2025, 12:00
Carbocations, as reactive intermediates, play a significant role in many organic reactions. A detailed description of their structure and stability is relevant in the understanding of such reactions and thus crucial for modern synthetic chemistry. Carbocations are distinguished into two classes, classical (carbenium) and non-classical (carbonium) carbocations, where the non-classical...
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Laura Finazzi (HFML-FELIX)10/07/2025, 12:20
Steroidal hormones play a crucial role as chemical messengers within organisms. Their profound influence on various physiological processes makes them a prime focus for analysis in healthcare and many other biochemical fields. While their metabolic pathways are extensively studied and numerous MS(/MSn) spectra are available (e.g., in the HMDB), the fragmentation pathways of steroidal hormones...
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David Vesty (Department of Chemistry, University of Oxford)
Please find attached abstract for poster presentation.
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Deepak Pradeep (HFML-FELIX)
Gas-phase metal clusters can act as a good model system to investigate the active sites of more complex catalyst materials whose reaction mechanisms are poorly understood. However, such materials often comprise multiple elements with a mixing ratio optimized for better selectivity and reactivity based on screening. We present experiments using a controlled laser generation of bimetallic...
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Priyanka Arvind Paunikar (HFML-FLEIX, Radboud University)
Poster Abstract
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Oleg Kolosov (Lancaster University)
Mid-infrared (mid-IR) light, with its unique ability to probe vibrational, rotational, and electronic transitions, serves as a crucial tool for exploring fundamental light-matter interactions. Focusing electromagnetic radiation with enhanced energy density into extremely small sub-wavelength and nanoscale spatial regions is a cornerstone challenge in modern optics. This capability is essential...
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Olga Duda (HFML-FELIX)
Olga A. Duda 1,2, Gerrit Groenenboom2, Daniel A. Horke2, and Joost M. Bakker1,2
1HFML-FELIX, Toernooiveld 7, 6525 ED, Nijmegen, The Netherlands
2Radboud University, Institute for Molecules and Materials, Heyendaalseweg 135, 6525 AJ NijmegenThe ability of molecules to absorb individual quanta of vibrational energy is the cornerstone of infrared spectroscopy. However, once deposited in a...
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Mr Jens van der Hulst (HFML-FELIX, Nijmegen, the Netherlands & Institute for Molecules and Materials, Radboud University, Nijmegen, the Netherlands)
Neutral HNCS was first detected in the molecular cloud Sagittarius B2 in 1979 by Frerking et al.[1] and has since been detected in several regions of the interstellar medium (ISM). [2, 3] HNCS is of particular interest because it contains elements essential for life and may act as a precursor in the formation of prebiotic molecules. Understanding its chemistry provides valuable insight into...
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Mr Jean-Xavier Bardaud (CNRS, ICP, Université paris-Saclay)
Thanks to radio telescope observations, numerous prebiotic precursors, such has hydroxylamine[1], have been detected in the interstellar medium. These species may participate in the formation of more complex organic compounds observed in space. Our previous work [2] showed that IR-induced processes can indeed trigger the formation of new complex molecules. Revealing the structure of...
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Lara van Tetering (HFML-FELIX)
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Piero Ferrari (HFML-FELIX)
Poster
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