Elettra-Sincrotrone Trieste S.C.p.A.

Phase control of interfering stimulated Raman pathways in the XUV regime

Abstract Coherent control uses interference between quantum pathways to enhance or suppress transitions to a target quantum state. In stimulated Raman excitation, such control can be achieved through interference between two indistinguishable pathways connecting the same initial...

Amphiphilic Motif Triggers Microheterogeneity in Low‐Melting Mixtures

Microheterogeneity in low‐melting mixtures of ethylene glycol and chemically modified choline derivatives synthesized on purpose is here proposed. Novel cholinium ions with one or two N ‐butyl substituents or an N ‐hydroxybutyl chain are synthesized for the first time. Synthesis...

More is not always better: Dissociative photoionization limits the EUV absorbing photoacid generator pentafluorophenyl triflate in photolithography

Pentafluorophenyl triflate has been explored as a highly absorbing neutral photoacid generator (PAG) candidate for next-generation chemically amplified resists used in extreme ultraviolet (EUV) lithography. Although increased fluorination enhances EUV absorption, this study demon...

Operando and Postmortem Study of Iridium-Decorated Titanium-Based Catalysts in PEM Water Electrolysis

Abstract Understanding the dynamic degradation of oxygen-evolution electrocatalysts under realistic operating conditions is essential for advancing the performance and efficiency of proton exchange membrane (PEM) water electrolyzers. By combining operando Small-Angle and Wide-Ang...

A roadmap for strategic pilot experiments at the first plasma-driven x-ray FEL

Abstract Plasma-acceleration technology offers a route to drastically reduce the size and cost of x-ray free-electron lasers (FELs), potentially enabling a broad diffusion of FEL facilities worldwide and a scientific impact comparable to, or even exceeding, that associated with t...

Automated Spin‐Assisted Layer‐by‐Layer Epitaxy Produces Highly Oriented Mixed‐Linker MOF Thin Films

ABSTRACT Control over crystallographic orientation in metal‐organic framework (MOF) thin films is crucial for exploiting their anisotropic properties in sensing, catalysis, and separation. Achieving reproducible, highly oriented films remains challenging, especially for mixed‐lin...

Triple-Helical Assembly of Atomically Precise Silver Nanocluster-Assembled Material: A p-Type Semiconductor

Abstract The construction of helical architectures from achiral building blocks remains a fundamental challenge in supramolecular and materials chemistry. We report the first triple-helical cluster-assembled material constructed entirely from achiral components via covalent coord...

Morpho-electrochemical behavior of particulate Zn electrodes revealed by X-ray and neutron tomography

Abstract Aqueous rechargeable Zn-based batteries are gaining attention for their sustainability, safety, and cost-effectiveness; however, no industrially viable solutions are yet available, due to the synergistic issues of passivation and shape change. In particular, flow batteri...

Transient Laser‐Induced Periodic Surface Structures Revealed by Time‐Resolved EUV Diffuse Scattering

ABSTRACT The formation of permanent laser‐induced periodic surface structures (LIPSS) on solid surfaces under impulsive laser irradiation above the damage threshold has been the subject of extensive research. Here, we report the formation of transient quasi‐periodic surface modul...

Chirality Unlocks Sub‐Terahertz Molecular Dynamics In Peptide Nanotubes

Low-frequency modes in the picosecond range play a key role in molecular recognition and biomolecular function. Here, we investigate how these dynamics at the interfaces of self-assembled peptide biomaterials relate to fine structural details of the supramolecular assembly. We re...

Transmission diffuse EUV scattering by nanoscale Lamb waves in thin membranes

We report time-resolved diffuse extreme ultraviolet (EUV) scattering measurements of optically excited acoustic waves in thin Ti/SiN bilayers in transmission geometry. Following femtosecond optical excitation, the EUV diffuse scattering signal yields circular fringe patterns evol...