Journal Article

The Outstanding optoelectronic properties of lead halide perovskites have been related to the formation of polarons. Nevertheless, the observation of the atomistic deformation brought about by one electron–hole pair in these materials has remained elusive [...]

Bent-core nematic liquid crystals exhibit unique properties, including giantflexoelectricity and polar electro-optic responses, making them ideal forenergy conversion and electro-optic applications. When confined innanopores, they can stabilize chiral nanostructures, enhance polar order, andenable defect-driven switching – offering potential in nanofluidics, sensing,and adaptive optics. [...]

In 2022 and 2023, the Large Hadron Collider producedapproximately two billion hadronic interactions each second frombunches of protons that collide at a rate of 40 MHz. The ATLAStrigger system is used to reduce this rate to a few kHz forrecording. [...]

A search is performed for long-lived heavy neutral leptons (HNLs), produced through the decay of a W boson along with a muon or electron. Two channels are explored: a leptonic channel, in which the HNL decays into two leptons and a neutrino, and a semi-leptonic channel, in which the HNL decays into a lepton and a charged pion [...]

A search for a pseudoscalar $a$ produced in association with a top-quark pair, or in association with a single top quark plus a $W$ boson, with the pseudoscalar decaying into b-quarks ($a\rightarrow b\bar{b}$), is performed using the full Run 2 data sample using a dileptonic decay mode signature. The search covers pseudoscalar boson masses between 12 and 100 GeV and involves both the kinematic regime where the decay products of the pseudoscalar are reconstructed as two standard $b$-tagged small-radius jets, or merged into a large-radius jet due to its Lorentz boost. [...]

This paper presents searches for the direct pair production of charged light-flavour sleptons, each decaying into a stable neutralino and an associated Standard Model lepton. The analyses focus on the challenging “corridor” region, where the mass difference, ∆m, between the slepton ($ \overset{\sim }{e} $ or $ \overset{\sim }{\mu } $) and the lightest neutralino ($ {\overset{\sim }{\chi}}_1^0 $) is less or similar to the mass of the W boson, m(W), with the aim to close a persistent gap in sensitivity to models with ∆m ≲ m(W) [...]

Measurements of the total and differential Higgs boson production cross-sections, via WH and ZH associated production using H → WW$^{*}$ → ℓνℓν and H → WW$^{*}$ → ℓνjj decays, are presented. The analysis uses proton-proton events delivered by the Large Hadron Collider at a centre-of-mass energy of 13 TeV and recorded by the ATLAS detector between 2015 and 2018 [...]

Stimuli-responsive actuators are candidates for the development of soft robots due to their shape deformation and environmental adaptation capabilities. Adaptation to environmental stimuli not only enables complex shape reprogramming but also benefits the recovery of mechanical injuries of the soft actuators. [...]

The sensitivity of x-ray diffraction experiments towards Bragg peak parameters constitutes a crucial performance attribute of experimental setups. Frequently, diffraction peaks are characterized by model-free angular moment analysis, which offers a greater versatility compared to traditional model-based peak fitting. [...]