Helmholtz Institute Jena

Sub-nanosecond structural dynamics of the martensitic transformation in Ni-Mn-Ga

Abstract Martensitic transformations drive many emerging applications, ranging from actuation and mechanocaloric refrigeration to thermoelastic energy harvesting. All these applications benefit from faster transformations. However, systematic investigations of the fast dynamics a...

Endogenous Functional Group Engineering Enables High‐Efficiency Hard Carbon Anodes for Sodium‐ion Batteries

ABSTRACT Hard carbon is a leading anode for sodium‐ion batteries, but its widespread use is still prevented from low initial Coulombic efficiency (ICE) and unstable electrode‐electrolyte interfaces. In this work, we show that engineering endogenous functional groups can directly...

Recyclable and Degradable Covalent Adaptable Polymer Networks ( CANs ) Based on Dynamic Thiol–Yne Reactions

ABSTRACT Covalent adaptable networks (CANs) have been introduced as an alternative to classical thermosets. The presence of dynamic covalent bonds can be utilized to enable (re‐)processability and, consequently, the recyclability of these polymer networks. Within this context, we...

Topology-Controlled Photophysics of Ionized C14H10 Isomers

Abstract The optical signatures of polycyclic aromatic hydrocarbons (PAHs) are highly sensitive to their molecular geometry, charge state, and intermolecular interactions. A comparison between the linear anthracene and angular phenanthrene ions highlights how topological effects...

Impact of He+ ion irradiation on the domain wall dynamics in Pd/Co/Pd trilayers with perpendicular magnetic anisotropy

Heavy metal/ferromagnetic-based heterostructures with perpendicular magnetic anisotropy (PMA) are prototypes for domain wall (DW)-based spintronic devices. We explored the impact of He + ion irradiation on the bubble DW dynamics in Pd/Co/Pd trilayers with PMA. The effective magne...

Intrinsic OPTIR imaging and spectroscopy enable label-free monitoring of viral infection in living cells

Abstract Resolving biochemical signatures associated with viral infection progression within individual living cells, without introducing fluorescent labels that demand genetic accessibility and may perturb the process under study, remains a challenge for conventional optical app...